Vol. XIV

January, 1938

No. 1

THE

Pan-Pacific Entomologist

Published by the

Pacific Coast Entomological Society

in co-operation with

The California Academy of Sciences

CONTENTS

VAN DYKE, NEW SPECIES OF RHYNCHOPHORA FROM WESTERN

NORTH AMERICA 1

CHAMBERLIN, SIX NEW SPECIES OF CHRYSOBOTHRIS FROM THE

WESTERN UNITED STATES 10

STONE, AN OCCURRENCE OF PROTHETELY IN MELANOTUS LON-

GULUS - 16

BAILEY, A REDESCRIPTION OF TWO SPECIES OF CALIFORNIA

THRIPS 19

TIMBERLAKE, NEW SPECIES OF ANDRENA FROM CALIFORNIA 24

SWENK, TWO NEW AMERICAN BUMBLEBEES 29

BLAISDELL, A NEW SPECIES OF SITONA FROM SAN MIGUEL ISLAND 31

VAN DUZEE, GENUS DICTYDEA UHLER.. 33

MICHENER, AMERICAN BEES OF THE GENUS CHELOSTOMA 36

PROCEEDINGS OF THE PACIFIC COAST ENTOMOLOGICAL SOCIETY 46

San Francisco, California

1938

THE PAN-PACIFIC ENTOMOLOGIST

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THE PACIFIC COAST ENTOMOLOGICAL SOCIETY

Officers

President C. D. Duncan

Vice-President R. L. Usinger

Secretary-Treasurer E. G. Linsley

Publication Committee

Editor E. P. Van Duzee

Associate Editor E. C. Van Dyke

Treasurer E. R. Leach

Business Manager R. L. Usinger

1938 1939 1940

G. F. Ferris E. G. Linsley C. D. Duncan

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Published at the California Academy of Sciences, Golden Gate Park,

San Francisco, California.

Entered as second class matter, February 10, 1925, at the postoffice at

San Francisco, California, under Act of August 24, 1912.

The Pan-Pacific Entomologist

Vol. XIV, No. 1

January, 1938

NEW SPECIES OF RHYNCHOPHORA (COLEOPTERA)

FROM WESTERN NORTH AMERICA

BY EDWIN C. VAN DYKE

University of California, Berkeley, California

Genus Paracimbocera Van Dyke, new genus

Of moderate size, elongate, more or less densely clothed with

closely appressed scales and sparsely pilose. Head with trans-

verse impression at base of rostrum; eyes of moderate size, coarsely

granular, transverse, but not projecting beyond side margins of

head; rostrum slightly longer than head, narrower, gradually

dilated from frontal impression, feebly and broadly impressed

above, arcuate as seen in profile and with a feeble triangular

impression at middle of front margin, nasal plate obsolete; scrobes

lateral, feebly arcuate, directed towards eyes but shallow, dilated

and poorly defined behind; antennse robust, scape moderately

clavate, reaching front margin of eye, funicle considerably longer,

first segment twice as long as broad, second to sixth moniliform,

seventh transverse, rather close to club and of similar vestiture,

club arcuminate-cordate. Prothorax slightly broader than long

with moderately arcuate sides, a feeble longitudinal impression

at middle of disk, sculpturing concealed by scaly vestiture, and

with ocular lobes and fimbriee well marked. Elytra elliptical, with

humeral angles obliterated, finely striato-punctate and with

scattered punctures on the intervals. Beneath with first and sec-

ond ventral segments broad, the suture between arcuate. Legs

stout, tibias but slightly expanded apically, corbels open, anterior

and middle mucronate within at apices, third tarsal segment

slightly wider than second, bilobed and with a small papillose tuft

at the apex of each lobe, segments one to three laterally setose

beneath and sparsely squamose between the rows of setae, claws

free.

Genotype: Paracimbocera atra, new species.

This genus is established for the reception of another of those

semidesert weevils which belong near Cimbocera because the

scrobes are feebly inferior and poorly defined behind, the

seventh segment of the antennal funicle near the club an,d sim-

ilarly clothed with fine sericeous pile, and the soles of the tarsi

THE pan-pacific ENTOMOLOGIST [yOL. XIV, NO. 1

setose and squamose, not papillose. From Cimbocera it differs

by having the third tarsal segment evidently broader than sec-

ond, lobed and papillose beneath at apices of lobes and by

having the postocular lobes of the prothorax well developed.

From Miloderes, it differs by having a pronounced transverse

impression in front of the eyes, seventh funicular segment dis-

tinct from club, and third tarsal segment less broad and less

papillose beneath; from Miloderoides Van Dyke by having the

antennal scrobes less sharply defined, the postocular lobes prom-

inent whereas absent in the other, and the third tarsal segment

less broad and with a much more reduced papillose pad beneath;

and from Cryptolepidus Van Dyke, which closely resembles

Miloderoides, by having well developed postocular fimbriae and

less expanded third tarsal segment which is also entirely setose

in Cryptolepidus. In general appearance and many major fea-

tures Paracimbocera greatly resembles some of the black species

of Dyslobus where I was at first inclinad to place it until my

attention was called to the tarsi by Mr. P. C. Ting.

Paracimbocera atra Van Dyke, new species

Rather small, elongate, black; head, pronotum and elytra

densely clothed with black scales, those of head and pronotum some-

what elevated, producing a granular effect, while those of the elytra

are flatter and more closely attached; the head, prothorax and

basal portion of elytra also provided with a few short, scattered,

much inclined scales; the apical portion; of the elytra with long

pile, denser on the declivity and inclined to be somewhat fulvous,

while the legs and underside of body are clothed with scales that

appear a bit cinereous, and with a few' short, much scattered hairs.

Head rather coarsely, densely punctured with the punctures in

most cases concealed by the scales; front convex, separated from

the rostrum by a deep, transverse impression; rostrum but little

longer than the head, broad, gradually dilated forwards, almost

as broad in front as it is long, quite arcuate as seen from the

sides and with a slight impression above the eyes; eyes flattened,

hardly projecting beyond side margin of head; antennal scape

reaching front margin of eyes, first and second funicular seg-

ments elongate, the following short and transverse, club elongate-

cordate. Prothorax about a fifth broader than long; sides arcuate,

feebly constricted near base and apex; post-ocular lobes and

fimbriae well developed ; disk evenly clothed with scales, not rugose,

feebly longitudinally impressed at middle with a feeble impres-

sion each side behind. Elytra ellipitical, three-eighths longer than

January, 1938]

VAN DYKE— NEW RHYNCHOPHORA

broad and about two and a half times as long as prothorax;

humeral angles absent; sides evenly arcuate; striae fine with mod-

erate sized, well spaced punctures; intervals flat, broad, with a

double series of irregularly placed punctures; declivity vertical.

Beneath rather coarsely punctured but punctures concealed by

scales, the first ventral segment deeply, broadly impressed at

middle, last ventral non-carinate ; anterior tibiae denticulate within

and feebly bent towards apex. Length 7.5 mm., breadth 3 mm.

Holotype male (No. 4555 Mus. C. A. S. Ent.), a unique col-

lected by myself in the Charleston Mts., near Las Vegas, Nevada,

May 24, 1935.

Dyslobus remotus Van Dyke, new species

Short, robust, piceous, densely clothed above with brown scales

of various shades, arranged in a tessellated manner, and beneath

with lighter colored and somewhat more elongate scales, also a

few stellate scales on the meso- and metathorax beneath, and in

addition rather densely covered above with semierect brown pile,

with a lighter, sparser and more inclined pile beneath. Head

somewhat flattened in front; finely, sparsely punctured but punc-

tures mostly concealed by the scales; rostrum twice as long as

wide, separated from head by a shallow, transverse impression

and' feebly narrowed from impression to the widely dilated alse

at apex; eyes moderate in size, broadly elliptical; antennal scape

reaching hind margin of eyes; first and second funicular seg-

ments considerably longer than broad, 3-6 moniliform, the seventh

transverse; club cordiform, about two and a half times as long

as broad. Prothorax barely broader than long, apex over one-

third narrower than base, sides, well rounded, feebly constricted

before apex, post-ocular lobes prominent, disk convex, densely

squamose and moderately pilose. Elytra almost two-fifths longer

than broad, two and a half times as long as prothorax and a

third broader; base transverse with humeral angles small, right

angled, the sides feebly sinuate just back of base, thence gradually

arcuate to apex ; disk convex, evenly arcuate to summit of declivity,

thence almost vertical; striae moderately impressed; strial punc-

tures rather coarse, well spaced and each with a short, hooked

scale arising from it; intervals feebly convex, broad, of about

equal width, densely squamose, with pile arranged in irregular

rows. Beneath rather coarsely, not closely punctured, the last

ventral obtusely carinate towards the apex. Anterior tibias denti-

culate within and somewhat bent towards apex. Length 7 mm.,

breadth 3 mm.

Holotype (No. 4554 Mus. C. A. S. Ent.) and one paratype

from Bone Springs, Blue Mts., Oregon, 5000 ft. alt., collected

THE PAN-pacific entomologist [vol. xiv, no. 1

June 27, 1935, by H. P. Lanchester and very kindly referred to

me for description by Mont. A. Cazier.

This species is very close to argillous Van Dyke^ but differs

by being in general a bit smaller, proportionately narrower,

considerably flatter, with sparser, coarser and shorter pile; by

having the elytral striae rather deeply impressed and the intervals

somewhat convex, whereas the striae are fine an,d the intervals

flat in argillous, and by having the strial punctures each sup-

porting a small hooked scale instead of a fine hair as in the other.

Nemocestes expansus Van Dyke, new species

Small, robust, brown, densely clothed with light and dark

brown scales and with a very short, sparse, semierect pile, an-

tennae rufous.

Head more or less flattened, feebly concave between the eyes;

rostrum slightly longer than head, with sides straight and almost

parallel; eyes moderately convex; scape of antennae reaching be-

hind front margin of prothorax; funicular segments l-2i elongate;

3-7 moniliform, barely longer than broad. Prothorax about one-

thirdl broader than long, with sides divergent forwards from base

almost to middle where they are rounded, then sinuate and con-

vergent forwards to apex; disk with punctures concealed by scales;

setae short and sparse. Elytra almost a third longer than broad,

trapezoidal; base transverse with rounded humeri; sides almost

straight and divergent to apex; disk moderately convex, with

striae finely impressed and finely punctured, first interval widen-

ing rapidly towards center then narrowing apically but wider

apically than basally; intervals 2-6 somewhat convex, especially

towards declivity, the fifth more distinctly so; seventh forming

the sides of the elytra, carinate in front and expanded behind

and, as seen from beneath, a lobe-like process broadly overhanging

like the eaves of a house; intervals 8-10 flattened and obliquely

placed, the summit of the declivity overhanging; setae short and

more or less hooked. Beneath sparsely squamose and pilose and

but moderately punctate: Length 4.5 mm., breadth 2.35 mm.

Holotype (No. 4556 Mus. C. A. S. Ent.,), a unique collected

by myself at Lake Pilarcitas, San Mateo Co., Calif., April 26,

1936.

This odd looking species would run in my key® to a species

close to koeheli but would differ from that, as from all other

species of the genus, by the greatly expanded and overhanging

^ Pan-Pac. Ent., Vol. XI, Jan. 1935, pp. 7-8.

® Pan-Pac. Ent., Vol. XII, Jan. 1936, pp. 24-25.

January, 1938]

VAN DYKE— NEW RHYNCHOPHORA

seventh elytral intervals and the general trapezoidal shape.

Geographically it occurs midway in the coastal ranges of Cali-

fornia; between the territory occupied by tuber culatus, the Mt.

Tamalpais region north of San Francisco, and that by koeheli,

the Santa Cruz mountains. Together the three form a peculiar

group.

Genus Thysanocorynus Van Dyke, new genus

Short, robust ; entire surface densely clothed with closely

appressed scales, upper and under surface with fine, short setae,

rather sparsely placed; the mouthparts, antennal scape, sides of

prothorax, elytra and femora ornamented with long, silky pile,

and the legs fossorial. Head short, stout, very broad between the

eyes, five or six times the breadth of eyes, front and dorsal sur-

face of rostrum flattened and on same plane without line of de-

marcation between; eyes moderately convex; rostrum broad at

base, gradually narrowed forwards from head and short, though

slightly longer than the head itself and, with a triangular emargi-

nation in front; scrobes lateral, feebly arcuate, deep in front,

shallow and broad behind, squamose, and directed towards center

of eyes; antennae rather short and not particularly robust; scape

curved, gradually clavate and reaching beyond front margin of

prothorax, conspicuously fringed with long pile which is twice

as long in front as behind; funicle 7-segmented, short, as a whole

only about three-fourths the length of the scape; first segment

robust, clavate, about three times as long as broad; second as long

as first but narrow and subcylindrical ; 3-7 short, gradually broader

outwardly, 6-7 transverse; club cordate and clothed with golden

silky pile. Prothorax transverse, sides arcuate, post-ocular lobes

and fimbriae absent. Elytra broadly oval, with a narrow basal

margin; striae finely impressed and finely, closely punctured; inter-

vals flat, with irregularly dispersed punctures from which the

short setae arise. Legs stout; tibiae straight, dilated outwardly

at apices, transversely on front legs and very obliquely on middle

and hind legs, the process on the hind legs in the form of a tooth

above the apex of the tibiae; corbels open and squamose within,

third tarsal segment dilated and lobed; tarsal claws connate at

base, plantar surface of tarsi squamose and setose. First abdomi-

nal suture arcuate, second segment equal to third and fourth

combined.

Genotype: Thysanocorynus aridus, new species.

This peculiar genus will have to be placed in the tribe Tri-

gonoscutini according to the characterization of that tribe, at

least for the present. It, however, differs greatly from Tri-

gonoscuta, the type genus, in regard to a number of fundamental

THE PAN-PACIFIC ENTOMOLOGIST [vOL. XIV, NO. 1

features sueh as the shape of the head, the rostrum being more

or less eylindrieal and well demarked from the rest of the head

in the latter; in regard to the antennas the seape of whieh is

straight and the funiele long in Trigonoscuta; and in regard to

the tarsi which are papillose beneath, with free tarsal claws in the

latter.

Thysanocorynus aridus Van Dyke, new species

Scaly covering a pearly white, the scales somewhat imbri-

cated; basal color of body black, antennal funiele, club and

tarsi ferruginous.

Head including rostrum about as long as broad and one-

quarter longer than prothorax. Prothorax almost three-fifths

broader at middle than long; base broadly, feebly arcuate or trans-

verse; apex feebly emarginate, sides well rounded with long gray

fimbriae placed somewhat obliquely laterally; disk densely squa-

mose, when abraded showing a feebly rugose surface, with deep,

well spaced punctures. Scutellum minute. Elytra two-ninths

longer than broad, with base finely margined and perceptibly

broader than base of pronotum ; sides obliquely divergent to humeri

which are well rounded; thence almost straight and feebly con-

vergent to beyond middle, from whence they are arcuate and con-

vergent to apex; disk very convex, finely striate, with fine, closely

placed strial punctures; intervals broad and flat, each with a

series of irregular punctures from which arise short and erect

setae, and densely squamose; the seventh and eighth or lateral

intervals with long gray pubescence, longest and densest in front

especially about the humeri; declivity abrupt, beneath squamose

and setose much as above. Legs very hairy. Holotype male,

length 6 mm., breadth 3 mm., allotype female, length 6.5 mm.,

breadth 3.5 mm.

Holytype male (No. 4557), allotype female (No. 4558 Mus.

C. A. S. Eiit.), and eleven paratypes, all collected at Cronise Lake

(Mojave Desert), San Bernardino Co., Calif., Apr. 28, 1937, by

P. C. Ting and M. Cazier, to whom I am indebted for the privi-

lege of studying the specimens. The major portion of these

will remain in the collectors’ hands. These beetles were beaten

from creosote bushes, Larrea tridentata (DeC.) after dark. An

imperfect specimen is in the collection of the California Academy

of Sciences which was picked up near Needles, Calif., Dec. 3,

1931, by J. August Kusche.

January, 1938]

VAN DYKE— NEW RHYNCHOPHORA

This typically desert weevil is quite variable, the special

tibial enlargements in particular often being mueh larger than

normal and sometimes quite distorted or monstrous as is fre-

quent in desert forms of life.

Trichalophus seminudus Van Dyke, new species

Rather large, elongate, black with short, much inclined scale-

like setae scattered over the surface or assembleid into tufts whieh

are generally disposed in a more or less transverse manner,

especially apically.

Head and rostrum coarsely, rather closely punctured, a shallow

groove, gradually widened forwards, extending dorsally from

between the eyes to the tip of the rostrum, the rostrum less than

three times as long as broad, with well developed alae, and a

small triangular depression at apex; eyes large but quite flattened;

scrobe sharply excavated throughout; antennae with scape cla-

vate, funicular segments 1-2 elongate, the second the longer, seg-

ments 4-7 moniliform and feebly transverse, club cordate. Pro-

thorax one-fourth broader than long, base transverse, apex

emarginate at center, sides well rounded, sinuate near base and

feebly constricted before apex; disk coarsely, closely granulose,

the setae arising from the large punctures at the apices of the

granules, with a narrow, median carina extending from near the

base to beyond the middle. Scutellum generally concealed by a

tuft of white scale-like hair. Elytra over three-eighths longer

than broad and five-eighths longer than prothorax, with well

rounded humeri; sides feebly arcuate at middle but well rounded

towards apex; disk quite convex, declivity abrupt, with striae

vaguely indicated but with strial punctures generally coarse, well

spaced and quite evident, the general surface coarsely punctured

and somewhat rugose. Beneath scabrous and finely, sparsely

pubescent, fourth sternite without teeth on outer side. Legs

finely, sparsely punctured and sparsely pubescent. Length 14-15

mm., breadth 5.5-6 mm.

Holotype (No. 4559 C. A. S. Ent.) and numerous designated

paratypes from a series of eighty-seven specimens collected by

myself on the Cumbres Pass, Colorado, elevation 10,000 ft., June

20, 1935, and on other dates within a period of a week.

This very distinct species stands out from other members of

the genus because of its dull black color and nearly naked

appearance, all other species in our fauna being rather densely

clothed with scale-like pile.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 1

Triglyphulus nevadensis Van Dyke, new species

Large, elongate, sooty black, the elytra sparsely clothed with

short, much inclined, black pile which is most evident on the

elytral declivity.

Head coarsely, closely punctured in front, more finely and

closely punctured behind; rostrum not quite three times as long

as broad, flattened above, coarsely punctured, trisulcate, the

median groove deep and narrowing in front, extending from a

deep fovea between the eyes to a point opposite the insertion of

the antennae, the lateral, short and broader behind, extending from

a point in front of the upper part of the eyes almost to the an-

tennae, the apex depressed, with a broad V-shaped impression and

apex acutely emarginate; eyes much flattened; antennal scrobes

deep, extending behind straight and oblique to the lower margin

of the eyes, scape feebly arcuate and gradually clavate, barely

reaching anterior margin of eyes; funicular segments 1-2 elongate,

about equal in length, third two-thirds length of second, 4-6 slightly

longer than broad, seventh triangular and broader, club elongate-

cordate. Prothorax about one-seventh broader than long, base

transverse, apex feebly arcuate at middle; sides feebly sinuate

behind, arcuate at middle and very feebly constricted before apex;

disk coarsely, closely punctured, more or less rugose laterally

and with an imperfect median carina not reaching either base

or apex. Scutellum small, clothed with gray scales. Elytra one-

third longer than broad, and three times as long as prothorax,

with well rounded humeri; sides feebly arcuate to posterior third,

then arcuate and convergent to apex; disk somewhat flattened,

declivity well rounded at its apex, oblique posteriorly; strise

vaguely indicated with strial punctures feebly marked medially

where of moderate size and well spaced but obscure or obliterated

at sides; general surface rather densely, finely punctured, finely

rugose and opaque; setse short, black, much inclined and only

conspicuous posteriorly especially on declivity where they are

quite evident under magnification. Beneath finely, rather densely

punctured, rugose and sparsely clothed with closely appressed

gray pile. Legs rather coarsely, sparsely punctured and sparsely

pilose, that of the femora gray, elsewhere black. Length 15 mm.,

breadth 6 mm.

Holotype (No. 4560 Mus. C. A. S. Ent.), a unique in my

collection collected by myself in the Charleston Mts., near Las

Vegas, Nevaida, May 24, 1935.

This fine species is of the same size and superficially very

like Triglyphulus ater (Lee.), the type species and only other

January, 1938]

VAN DYKE— NEW RHYNCHOPHORA

one in the genus. It differs, however, by having the rostrum very

much wider, nearly a third, flatter, with the lateral grooves set

with black setae, not gray scales, the head broader and more

densely punctured; prothorax more robust, disk not at all

tuberculate as in ater but coarsely, densely punctured and rugose;

the elytra finely, densely punctured and finely rugose, rather

sparsely punctured and very coarsely rugose in ater, also rather

definitely setose, especially apically, whereas but sparsely so in

the other. T. ater seems to be confined to the higher altitudes of

the Southern Cascades and Sierra Nevada. The new species is

as indicated from a desert range some distance to the east.

Entomology for Beginners

How to Know the Insects, by H. E. Jaques. 140 pages, 254

figures. Planographed. Fourth printing, revised, January, 1938.

Price postpaid, with spiral binding, $1.00, cloth binding, $1.80.

The author, 709 N. Main, Mt. Pleasant, Iowa.

Prof. Jaques has given us an ideal book for beginning Boy

Scouts and earnest amateur entomologists of all ages. The cover

is attractive or gaudy depending upon the point of view, the text

is written in simple language, and very clever cartoons are inter-

spersed throughout. These seemingly non-scientific embellish-

ments add greatly to its usefulness and appeal. However, the

real worth of the book lies in the absolute scientific accuracy and

precision in even the most elementary statements, in the high

order of illustrations of the common families of insects as well as

of various stages in the life history of selected types, in the

simplified key to the orders and commonest families of insects,

and in an account of the methods of collecting and preserving

insects, which, in our opinion, surpasses anything published

previously — R. L. Usinger.

Errata for Vol. XIH

On page 99, line 10 from bottom, for Leptoscirtus read

Litoscirtus.

On page 153, line 1, for perichlarus read perichlorus Cock-

erell.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 1

SIX NEW SPECIES OF CHRYSOBOTHRIS (BUPRESTID^)

FROM THE WESTERN UNITED STATES^

BYW. J. CHAMBERLIN, Ph.D.

Oregon State College

Chrysobothris planomarginata Chamberlin, new species

Medium elongate, somewhat robust, shining bronze above and

beneath, sparsely pilose, pile short, silvery, more dense on head

and prosternum. Head moderately coarsely, closely punctate with

greenish reflections, occipital line distinct and separating into

two lines near apex forming a Y ; clypeus with a broad, fairly

shallow, V-shaped emargination (Fig. 4) with sides rounded. An-

tennae with, basal segment longer than next two, these greenish,

segments 4 to 11 serrate and nearly black, greenish black in

some specimens.

Thorax about twice as wide as long, base slightly narrower

than apex, widest in front of middle, sides evenly rounded, sur-

face quite evidently convex, evenly punctate; median depressions

faintly evident and a lateral fovea barely evident.

Elytra slightly wider than thorax, parallel to one- third from

base thence narrowing and each elytron separately rounded, with

no sign of serrations, first costas entire, others interrupted. A

distinct basal fovea and a less evident one near the humeral

angle of each elytron, three or four small, densely punctate areas,

much as in C. mali, are faintly evident on each elytron. Beneath

slightly more shining; prosternum with well-developed lobe.

Length 7.5 to 9 mm., width 3 to 3.5 mm.

Male: Front brassy green; anterior tibiae arcuate and abruptly

dilated at tip (Fig. 1), dilation about one-fifth length of tibia,

basal half of dilation distinctly wider than apical half. Last

ventral broadly, shallowly, semi-circularly emarginate; margins

without serrations (Fig. 3).

Female: Front bronze, more shining beneath than male, tibiae

without apical dilation last ventral with a small shallow emargi-

nation, margins entire (Fig. 2).

Type and allotype from Bull Prairie, Lake County, Oregon.

7,000 feet elevation, July 24, in the collection of the writer.

Other specimens from Grant County, Oregon.

The general size and shape of this species is similar to C.

contigua but the entire elytra and the last ventral without ser-

rate margins places it into a group with C. hoharti Van Dyke^

^ Published as Technical Paper No. 269 with the approval of the Director of

the Oregon Experiment Station. A contribution from the Dept, of Entomology.

^ 1934, Van Dyke. New Species of Buprestidae, etc., Ent. News 46 : 89.

January, 1938]

CHAMBERLIN— NEW CHRYSOBOTHRIS

a group not recognized in Horn’s key^ The following should

be added to Horn’s key on page 71 to take care of this new

group :

Lateral margin of last ventral segment not serrulate, rarely in-

terrupted.

Elytra acuminate at tip, Group VI

Elytra obtuse and serrulate at tip

Elytra with either costal or discal foveae, sometimes with

both, Group VII

Elytra without costae or discal foveae, Group VIII

Elytra individually rounded and not serrulate; anterior tibiae

of 6 dilated at tip, Group IX

Chrysobothris scotti Chamberlin, new species

Form of ciiprascens ; thorax only a little more shining than the

body which is dull cupreo-aeneous ; antennae with segments I and

II subequal, first three segments about two-fifths of the entire

length, serrate from the fourth and only slightly more slender

towards the tip. Front coppery, finely pubescent, callosities only

faintly evident, entire front finely, closely punctate. Clypeus with

a broad shallow crescent-like emargination (Fig. 8), somewhat

as in speculifer. Thorax twice as wide as long, widest in front

of middle, margins sinuate, constricted at base and at middle;

disc sparsely punctate at middle, densely at sides; median de-

pression absent or only vaguely marked; a faint indication of a

depression each side. Elytra much wider than thorax, basal foveae

prominent; first costa distinct except near base. Others inter-

rupted but quite evident at basal third. Elytral margins serrate

from the humeral angles to tips which are rounded.

Beneath purplish, more shining, finely, closely punctate; pro-

sternum cupreous, densely, coarsely punctate, without lobe.

Last ventral $ (Fig. 7) broadly quite deeply emarginate;

female with small rather deep semi-circular emargination (Fig. 6).

Anterior tibiae of male (Fig. 5) with a very prominent obtuse

tooth about one-third from apex.

Type locality Taos, New Mexico, collected by F. T. Scott

who has paratypes. Type in author’s collection.

This species belongs to Group HI running to the igriicollis,

speculifer divisions. It also has the general appearance of

cuprascens. From the latter it is at once separable by the broadly

emarginate clypeus; from speculifer it differs in the larger tooth

one-third from apex of tibiae; from iguicollis it differs by the

® 1886, Horn. A Monograph of the Species of Chrysobothris, etc., Trans. Am.

Ent. Soc. XIII: 65-124.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 1

duller color, front bronze not green as in the latter; the very

large tooth fully one-third from the tip, whereas in ignicollis

the smaller tooth is about one-fifth from the tip of the tibiae.

I take pleasure in dedicating this species to Mr. Scott who

has turned up several new species of Buprestidae.

Chrysobothris calcarata Chamberlin, new species

Form elongate slender; color above olive bronze with faint

coppery tinge, uniformly, sparsely covered with short silvery

pile; head slightly convex, front of male a beautiful shining

metallic green changing to bright copper at vertex, closely, uni-

formly punctate, punctures so shallow as to give the front an

almost smooth appearance. A coppery chevron is barely evident

at the apex, and a green chevron is faintly evident near the middle

of the front. Clypeus with a shallow, moderately broad emargi-

nation (Fig. 11). Thorax much wider in front than at the base,

disc scarcely interrupted though there is just an indication of a

small depression near the center of each lateral margin. Sides

uniformly acute. No median depressions, though there is a wide

smooth line running from base almost one-half way to front and

a similar line runs a short distance laterally from near the middle.

Elytra noticeably wider than thorax gradually narrowing from

the humeral angles to the apex, apices separately rounded and

serrulate, elytra not entirely covering the abdomen. All costae

entire but not prominent, a deep median fovea at the base of

each elytron. Entire surface closely, finely, uniformly punctate.

Prosternum prominently lobed, densely punctate with very

fine pile, uniform bronze beneath. Abdominal segments smooth

and shining along edges near center, laterally sparsely punctate

and with fine white pile.

Male: antennae bright green, coppery toward tip, serrate from

fourth segment and slightly narrowing toward tip; first seg-

ment as long as next two together. Anterior femur with long

acute tooth, serrulate on outer margin. Anterior tibiae (Fig. 9)

slightly arcuate and with a very small triangular tooth about

one-fourth from apex. Last ventral segment with very wide,

shallow emargination extending across the tip (Fig. 10).

Holotype, 6 , Prescott, Arizona. Described from single male.

Type in the author s collection.

This species might be placed in Horn’s Group I since the

disc of the thorax is practically uninterrupted yet because of

the slight interruption I am inclined to place it in Group III.

The shape of the last ventral segment and the clypeus will at

once separate it from any other species in either group.

January, 1938] Chamberlin— new chrysobothris

Chrysobothris bisinuata Chamberlin, new species

Form like soror; color above dull bronze; head with a dis-

tinct though very narrow impressed line running from base to

front; the latter uniform bronze, sparsely, finely punctate, two

callosities near middle. Clypeus with a fairly broad median

shallow emargination (Fig. 13). Thorax more than twice as

wide as long.

Base of elytra only slightly wider than thorax, parallel on

basal two-thirds, thence gradually narrowed; each elytron sep-

arately rounded, faintly serrate. First costa entire except near

tip and at the shallow basal foveee, others interrupted at each end

as well as at points one-half and two-thirds from base; surface

finely, not closely, punctate; tips not quite covering abdomen.

Disc of thorax without fovese, callosities or median impression,

sides regularly arcuate, width subequal at base and apex, sur-

face finely, not closely, punctate. Entire upper surface with fine

scattered pile.

Beneath more coppery shining, sparsely, finely punctate; pro-

sternum lobed, densely coarsely punctate; last ventral long, quite

narrow and distinctly bisinuate at apex (Fig. 12).

Described from a single female taken at Willows, California,

by Dr. H. A. Scullen, July 2, 1935. Type in the author’s col-

lection.

This species falls in Group 1. The thorax with equal base

and apex and the bisinuate last ventral will at once separate it

from all other species in the group.

Chrysobothris arizonica Chamberlin, new species

Form narrow, long; color dark bronze. Head with occipital

line faintly evident in male, lacking in female; front greenish,

6, or bronze, ? ; slightly convex, closely punctate, punctures

very shallow, pile scarcely evident. Clypeus of the female as

shown in figure 16. Clypeus of male with emargination slightly

deeper and more angulate. Antennae of 6 greenish bronze more

slender to tip; ? similar, color blackish purple.

Thorax widest in front, sides slightly rounded, sharply con-

stricted behind middle, disc uniformly closely, shallowly punctate.

Elytra scarcely wider than thorax; two basal foveae on each

elytron fairly large, moderately deep; a very shallow fovea at

center of wing cover and another almost two-thirds from base,

the latter quite inconspicuous. First and second costae evident

on apical two- thirds, others scarcely evident; interspaces finely.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 1

closely punctate; a very fine pubescence over upper surface; sides

parallel for three-fifths from base, thence constricted. Elytral

apices rounded, with serrate margins. Last dorsal segment par-

tially exposed. Beneath purplish bronze in both sexes, a little

more shining; prosternum lobed, with long silky hairs in the

male, much less so in female. Last ventral of male with a very

wide, rather shallow emargination, the bottom of which is quite

straight (Fig. 15.) Last ventral of female serrate, rounded, with-

out evident emargination. Anterior tibia of the male arcuate,

and with a very small obtuse tooth quite near the tip (Fig. 14).

Length of male 5.2 mm., width 1.6 mm.; of female 6.4 mm.,

width 2 mm.

One pair from Coconino County, Arizona, taken many

years ago. Type in author’s collection.

This species falls in Group I near micromorpha and piuta.

It differs from both by the more narrow form and dull color,

the tibial spur and the shape of the last ventral segment.

Chrysobothris grandis Chamberlin, new species

Form and size of C. californica. Female length 17 mm.,

width 6.6 mm.

Color above: elevated areas black and smooth, depressions

cupreous-lilac; beneath more shining cupreous-lilac; front and

antennae of the same color; front coarsely punctate in center, more

finely at the sides. Two large irregular callosities as usual;

clypeus broadly arcuately emarginate, sides straight (Fig. 18) ;

antennae serrate from third segment; third segment subequal to

the next two, more slender to the tip.

Thorax more than twice as wide as long, narrowed at apex

and slightly so at base (Fig. 19). Disc very rough, a median

depression from apex to one-fourth from base, finely, closely

punctate, a large irregular smooth, elevated area at either side

for one-half the distance from the front. A smaller one replaces

the median depression at the base. A similar small elevated area

connecting with the base at one-fifth from the basal angles.

Thorax reticulate laterally, with rather wide lines, depression

covered with whitish bloom. Elytral sculpture very similar to

californica except that the elevated area is less extensive and

the depressions are more lilac than coppery, with a white bloom.

Body beneath finely sparsely punctate, prosternum coarsely punc-

tate and almost devoid of pubescence, very prominently lobed

(finely densely punctate in californica). Last ventral slightly

wider than long, margins coarsely serrate, except near the tip;

emargination shallow as in figure 17.

January, 1938]

CHAMBERLIN— NEW CHRYSOBOTHRIS

This species falls in Horn’s group IV, and in general

appearance would certainly be mistaken for C. californica but

the prominently lobed prosternum at once separates it. In the

group IV, with lobed prosternum, there is no species which

Ekplanation of Plate

Fig. 1. Front tibia of Chrysobothris planomarginata n. sp.;

2. Last ventral segment $ C. planomarginata; Fig. 3. Last ventral

segment 6 C. planomarginata; Fig. 4. Clypeus male C. planomar-

ginata; Fig. 5. Front tibia of C. scotti n. sp; Fig. 6. Last ventral

segment $ C. scotti; Fig. 7. Last ventral segment 6 C. scotti;

Fig. 8. Clypeus of 6 C. scotti; Fig. 9. Front tibia of $ C. calcarata

n. sp.; Fig. 10. Last ventral segment 6 C. calcarata; Fig. 11.

Clypeus 6 C. calcarata; Fig. 12. Last ventral segment $ C. bisin-

utata n. sp.; Fig. 13. Clypeus $ C. bisinuata; Fig. 14. Front tibia

6C. arizonica n. sp.; Fig. 15. Last ventral 6 C. arizonica; Fig.

16. Clypeus $ C. arizonica; Fig. 17. Last ventral segment 6 C.

grandis n. sp.; Fig. 18. Clypeus $ C. grandis; Fig. 19. Prothorax

$ C. grandis.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 1

approaches it in size except C. woodgatei C. & N., and this new

species bears no resemblance to that species.

Described from a single female, labeled Fall Mountain Look-

out trail, Grant County, Oregon, 5200-6000 ft., July 14, 1936,

H. A. Scullen Coll. Type in author’s collection.

AN OCCURRENCE OF PROTHETELY IN THE WIREWORM

MELANOTUS LONGULUS LEC.

BY M. W. STONE i

Only two instances of prothetely in the Elateridae have been

recorded. Hyslop (I)"* in 1916 described a specimen of Melanotus

communis Gyll. which had both larval and pupal characteristics

and Thomas (2) in 1933 described a similar abnormality which

he had discovered in a larva of Monocrepidius Hindus De G-

The writer also observed this rarity recently while examining

a group of Melanotus longulus Lee. larvae which had been reared

in salve cans from the egg stage. The female which produced

the eggs was collected on alfalfa near Temple, Calif. This speci-

men (Figs. 1 and 2), one of a group of 34, which hatched be-

tween May 13 and June 13, 1932, was found in the prothetelous

state on August 27, 1935, after an elapsed period of 1,202 days.

As the larva was extremely active, it was decided to kill and

preserve the specimen before any possibility of breakage of the

wing pads in case it attempted to re-enter the soil. A brief

description follows:

The mouth-parts are normal and larviform. The antennae are

larviform but about twice normal size. The eyes are typically

pupiform, being located in a membranous area directly behind the

antennal base. As observed by Thomas (2) in M. lividus, the

paired wing pads situated on the mesothorax and metafhorax

appear to rise directly from the body wall. They are not well

developed, are distorted, and lack the normal striation found in

typical pupae. Apparently the left mesothoracic wing pad has

broken off, as only a stub-like pad remains. The right meso-

thoracic wing pad is considerably broader and slightly longer than

the metathoracic wing pads. The prothorax, except for being

slightly enlarged, is normally larviform. The coxae and tro-

^ Bureau of Entomology and Plant Quarantine, XJ. S. Department of Agri-

culture, Alhambra, Calif.

® Figures in parentheses refer to “Literature Cited.”

January, 1938]

STONE— PROTHETELY IN MELANOTUS

Larvae of Melanotus longulus Lee., showing wing pads

Fig. 1 — Dorsal view, Fig. 2 — Ventral view, x5.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 1

chanters of all legs are typically larviform, but the femora, tibiae,

and tarsi are pupiform. Spines on all legs are small and few in

number. The abdomen, except for the absence of lateral bristles,

is typically larviform. Length 19 mm. Width 3 mm.

Of this group of larvae which hatched during May and June

1932, 7 pupated normally in 1933, 12 in 1934, and 8 in 1935,

representing a 2, 3, and 4 year life cycle, respectively. Five indi-

viduals died and 2 continued as larvae, indicating a possible

5-year cycle for these individuals. In the group of 8 larvae which

completed development in 1935, the first prepupa was obtained

on July 3, and the first pupa on August 12. The last pupation

was observed September 26, so the abnormality occurred within

the normal pupation period of this species. Temperatures dur-

ing the larval period averaged 68.6° with a seasonal range of

from 53° to 87° F.

All specimens in the group were confined individually in

salve cans in the basement and were fed 10 kernels of moist

wheat at monthly intervals from the time of hatching. The

moisture content of the soil at each feeding was kept as near

optimum as possible, between 12 and 14 percent.

Hyslop (1) believed that an abnormal humidity at or shortly

before the time of pupation was the causative stimulus of this

phenomenon in M. communis. The fact that all larvae in this

series were subjected to the same conditions of soil moisture,

temperature, and food would indicate that other factors than

these are responsible for the occurrence of prothetely in M.

longulus.

Literature Cited

(1) Hyslop, J. A. 1916. Prothetely in the elaterid genus Mela-

notus. Psyche, XXIII, pp. 3-6, illust.

(2) Thomas, C. A. 1933. Prothetely in an elaterid larva

(Coleop.). Ent. News, XLIV, pp. 91-96, illust.

SUPPLEMENTAL NOTE TO THE PAPER FOLLOWING

Since the following paper was submitted the writer has added

to his collection eight specimens of Haplothrips calif ornicus

Mason, collected by G. L. Smith on A triplex at Arvin, California,

Aug. 18, 1936. Among these were two males. There are no

differences between the sexes except the usual differences in the

genitalia and the smaller size of the male. — S. F. Bailey.

January, 1938]

BAILEY— THYSANOPTERA

A REDESCRIPTION OF TWO SPECIES OF

CALIFORNIA THRIPS

BY STANLEY F. BAILEY

University of California

Two species of thrips (Tubulifera: Phloeothripidae) were

described by A. C. Mason in 1926 in this journal (Vol. 2, pp.

155-157). Hoplandrothrips sycamorensis Mason was described

from five females and one male from Springville (Tulare

County), California, taken “under bark or on leaves of syca-

more trees.” Zygothrips californicus Mason was described from

a single female collected at Orange Cove (Tulare County), Cali-

fornia, from an orange tree.

Through the kindness of Dr. Mason these species have been

studied and with his permission the types have been remounted

in order to redescribe and illustrate them. Since the writer’s

collection is not extensive in these two genera it will perhaps

become the part of some other thysanopterist to further check

the position of these species. Thus, this paper has been pre-

pared with the intention of aiding in clarifying the systematics

of this rapidly growing group of insects.

Several visits to the type locality of Z. californicus have

failed to uncover any additional specimens. One male of H.

sycamorensis was collected by the writer under sycamore bark

at Bakersfield, California, on August 21, 1935.

Haplothrips californicus Mason, 1926

According to Priesner (Thysanopteren Europas, p. 625,

1928) the chief difference between Haplothrips Serville and its

subgenus Zygothrips Uzel is that sense cones on the third an-

tennal segment are lacking in Zygothrips. In Mason’s species

californicus one sense cone is present on the third antennal seg-

ment (fig. 5). On this basis it should be referred to Haplo-

thrips only. The writer’s collection does not contain many of

the North American Haplothrips but californicus was compared

with thirty species at hand and found to be distinct.

The original description may be emended as follows:

Color, uniformly brown to dark brown; legs concolorous with

body. Fore tarsi and distal third of tibiae light brown. Antennae

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 1

with segments I and II dark brown, III yellow, IV to VIII light

brown. Wings colorless. Spines light brown and not conspicuous.

Head (fig. 1) longer than broad, rounded in front, slightly

divergent at posterior margin, with transverse lines. Cheeks

smooth. Post-ocular bristles moderate in length and not sharply

pointed. Three ocelli; the anterior ocellus on swollen vertex

extending forward over base of antennae, posterior ocelli con-

tiguous with inner margins of eyes. Mouthcone short, blunt.

Prothorax (fig. 2) slightly over twice as wide as long. Bristles

rather short and blunt. Fore tarsus (fig. 4) with two claws.

Fore femora enlarged. Wings transparent. Fore wing con-

stricted at center with 9 to 11 interlocated hairs on the posterior

distal margin.

Abdomen oval, tapering to tube (fig. 3) which is less than

half the length of head.

Measurements of female holotype: Total length (not including

antennae), 1.46 mm. Head, length 0.227 mm., width 0.175 mm.

Prothorax, length 0.123 mm., width 0.273 mm. Abdomen, width

at base 0.325 mm. Tube, length, 0.091 mm., width at base 0.061

mm. Length of antennal segments (in mm.) : I, 0.039; II, 0.050;

III, 0.052; IV, 0.059; V, 0.052; VI, 0.046; VII, 0.044; VIII, 0.024;

total length (not including intersegmental membranes) 0.356

mm. Length of bristles at posterior lateral angle of prothorax

0.046 mm. Length of post-ocular bristles 0.036 mm.

Hoplandrothrips sycamorensis Mason, 1926

Mason’s species H. sycamorensis^ does not entirely agree with

the definition of the subgenus Hoplandrothrips as set up by

Hood (Proc. Ent. Soc. Wash., 14:145, 1912). The writer has

not seen the type of this subgenus {H. xanthopus Hood, 1912)

but has H. microps Hood, 1912, described at the same time. In

H. sycamorensis the head is roughened and more typical of the

genus Phloeothrips Haliday, 1836, with the genal spines directed

forward and arising from tubercles placed at irregular intervals

on the cheeks (fig. 6). This species is very close to Phloeothrips

[Hoplandrothrips) armiger Jones, 1912, described from a unique

male. Based on the few specimens available, the males of the

two species may be separated as follows: H. armiger has three

long dilated bristles on fore margin of fore wing at base and

sycamorensis has the two basal bristles only dilated at the tip

(fig. 10). (The female has all three bristles dilated). The

male has been illustrated in this paper for comparison with

Jones’ species (U.S.D.A., Bur. Ent., Tech. Ser. No. 23, part 1,

plate VH, figs. 1-4, 1912). Until the female of armiger is de-

January, 1938]

BAILEY— THYSANOPTERA

scribed and a larger series of both species becomes available

for study the constant differences between these two species and

other closely related forms eannot be clearly defined.

A reidescription of sycamorensis is presented below.

Female: Color dark brown, with irregular, red hypodermal

pigmentation. Fore tibiae and fore tarsi very light brown to

yellow. Middle and hind legs with tip of tibiae and tarsi light

brown. Antennal segments I and II dark brown, basal portion

of segments III to VI yellow, remainder of segments light brown

to brown.

Head about 1.5 times as long as broad. Cheeks slightly

arched, converging posteriorly, and with small, irregularly placed,

warts from each of which arises a short spine. Frons overhang-

ing base of first antennal segments. Third antennal segment

with two sense cones, fourth with three, second segment with a

small, bean-shaped sensory area in center (fig. 11). Three ocelli,

posterior pair about opposite center of eyes. Post-ocular spines

not unusually long, with dilated, truncate tips (fig. 6) . Mouth-

cone sharply pointed and reaching margin of prothorax.

Prothorax about half as long as wide. One long spine at each

anterior lateral angle, two shorter spines on anterior margin, one

mid-lateral (not mentioned in original description) , one long spine

at each posterior lateral angle (one at left missing in male para-

type, fig. 7), and two shorter ones on posterior margin. All spines

mentioned dilated and truncate at tip. Fore tarsi with a tooth

at base. Fore tibiae with one long, slender pointed hair; in center

of underside. Fore femora enlarged with a similar long hair

near base on underside. Fore coxae (fig. 8) with one long, dilated

spine with four or more short, pointed spines posterior to dilated

spine. Tarsi of middle and hind legs unarmed. Wings colorless

with the exception of a light yellowish shading in center in basal

third. Five to ten interlocated hairs on posterior margin of fore

wing at tip. Three dilated spines at base of fore wing on anterior

margin (distal spine of the three in male not dilated at tip),

(fig. 10).

Abdomen large, tapering rather abruptly to the tube. Usually

three long dilated hairs present at posterior lateral margin of

each segment. Terminal hairs as long as tube (fig. 9).

Measurements of female type: Total length, not including

antennae 2.30 mm. (abdomen somewhat distended). Head, length

0.32 mm., width 0.23 mm. Prothorax, length 0.18 mm., width, 0.37

mm. Abdomen, width at base, 0.408 mm. Tube, length, 0.15

mm., width at base 0.078 mm. Length of antennal segments in

mm. (not including intersegmental membranes) : I, 0.034; II,

0.054; III, 0.067; IV, 0.072; V, 0.059; VI, 0.049; VII, 0.046; VIII,

0.028; total length, 0.41. Length of post-ocular bristles 0.058

the pan-pacific entomologist [vOL. XIV, NO. 1

mm. Length of bristles at posterior lateral angles of prothorax

0.075 mm.

Male (paratype) : Somewhat smaller and more slender. Fore

tarsi with a strong tooth (fig. 8). Fore tibiae with blunt tooth

January, 1938]

BAILEY— THYSANOPTERA

near base on inner side. Fore femora enlarged with two blunt

teeth on inner margin at distal end engaging tooth on tibiae. This

condition is usually indicative of the raptorial function. Length

of post-ocular bristles 0.062 mm. Length of bristle at right

posterior lateral angle of prothorax 0.059 mm. (none present on

left side) .

1, Dorsum of head Haplothrips calif ornicus Mason; 2, Dorsum

of prothorax of H. calif ornicus; 3, Tip of abdomen of H. cali-

f ornicus; 4, Left fore leg of H. calif ornicus; 5, Left antenna of

H. calif ornicus; 6, Dorsum of head of male of Hoplandrothrips

sycamorensis Mason; 7, Dorsum of prothorax of male of H. syca-

morensis; 8, Left fore leg of male of H. sycamorensis; 9, Tip of

abdomen of male of H. sycamorensis ; 10, Base of right fore wing of

male of H. sycamorensis; 11, Left antenna of male of H. syca-

morensis.

the PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 1

NEW SPECIES OF ANDRENA FROM CALIFORNIA

(HYMENOPTERA)

BY P. H. TIMBERLAKE

Citrus Experiment Station, Riverside, California

The types of the species described below are in the collection

of the Citrus Experiment Station, Riverside, California, with

the exception of those paratypes whose disposition is men-

tioned under the respective species.

Andrena (Ptilandrena) suavis Timberlake, n. sp.

This species is closely allied and similar to A. complexa

Viereck, but is considerably less greenish and has a much more

distinctly fasciate abdomen. These two species have a short

suberect finely plumose scopa, and the males have the face dark,

without light markings. On the basis of these characters they

fall in Ptilandrena, as defined by Robertson, rather than

Pterandrena.

Female. Black with tergum of abdomen very dark green and

a slight dark greenish luster on the head and mesonotum.

Pubescence pale ochreous, paler on the face and! underparts. Head

considerably broader than long. Fovese short and very narrow,

extending from level of middle of antennal sockets to a little

below the summit of the eyes and very widely separated from

the lateral ocelli. Malar space very short and linear. Clypeus

little produced, gently convex, tessellate and somewhat dullish,

finely, evenly and closely punctured, the punctures imparting a

fine roughness to the surface. Rest of face below antennae with

a very similar sculpture. Frons finely longitudinally striate.

Process of labrum broadly truncate, about twice as broad as long,

with the apical margin just perceptibly concave. Hair of head

entirely light except a few blackish hairs on the scapes and on

each side of frons next to the fovea. Foveae also blackish on dorsal

half except w*hen viewed from above. Hair of face below antennae

abundant, rather short, erect, plumose, and not concealing sur-

face. Antennae blackish, with the third joint a little shorter

than the next three joints combined. Thorax almost throughout

with a very uniform sculpture, tessellate and rather dull, with

obscure punctures, which become a little more evident on the

pleura and still more so on the sides of the propodeum so that

the surface is roughened. Enclosure of propodeum small, tri-

angular, defined by the fine granular-tessellated sculpture. Hair

of thorax rather long, erect, slightly shorter on the notum, and

January, 1938]

TIMBERLAKE— ANDRENA

of moderate density. Floccus on sides of propodeum very long

and strongly plumose. Tergum of abdomen somewhat shiny,

minutely tessellate, and with very fine rather sparse punctures.

Pubescence of tergum short, suberect, rather thin, but forming

a narrow complete fascia at apex of tergites II to IV. Fimbria

fuscous or brownish, overlaid with lighter hairs. Legs black

with tibial spurs pale testaceous. Hind basitarsi long, and about

two-thirds as wide as the hind tibiae at apex. Middle basitarsi

a little wider than the hind pair. Hairs of legs entirely light,

or the scopa may become a little fuscous towards base above. Hair

on inner side of tarsi golden ochreous. Wings subhyaline, not

darkened at apex; the veins (except subcosta) and stigma brown.

Basal vein a little postfurcal (but sometimes nearly or quite

interstitial with the nervulus) . Second cubital cell nearly quad-

rate, receiving the first recurrent at the middle. Length, 8.5

mm.; fore wing, 6.8 mm.

Male. Similar to the female except in usual sexual characters.

The metallic coloration more bluish than greenish. Pubescence

similar, but hair of face below antennae considerably longer and

denser, with that of clypeus bright ochreous (fading to whitish)

and with much black hair on sides of face and on the scapes

and a little on cheeks behind summit of eyes. In some speci-

mens there are a few black hairs on the pleura just below the

base of the wings. Fascia on tergites II to IV thinner and, more

or less interrupted in middle. Head much broader than long.

Process of labrum much as in the feihale but in some specimens

more distinctly emarginate on apical margin. Antennae blackish,

joint III subequal to IV plus V. Middle joints of flagellum slightly

longer than thick. Cheeks rather broad and rounded behind, the

widest part a little above the middle of eyes. Sculpture through-

out very similar to that of the female. Length 7 mm.; fore wing

5.4 mm.

Described from 9 females, and 29 males (holotype, female,

allotype, and paratypes) collected at Berkeley, Calif., on Ranun-

culus calif ornicus, February 24 to March 11 (R. M. Bohart) ;

one female (paratype) without data from old insectary collec-

tion at Sacramento; one female (paratype), Angel Island, San

Francisco Bay (G. Boettcher) ; and one female, one male (para-

types), Griffith Park, Los Angeles, on Ranunculus, March 14,

1936 (E. G. Linsley) . The holotype and allotype wfere collected

March 11, 1935.

The series from the type locality shows little variation not

noted above except that the black hairs on the sides, of the face

in the female occasionally are more numerous and descend below

the antennae. The females vary from 8 to 9.5 mm. in length,

and males from 6.75 to 7.5 mm. The male and female from

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 1

Los Angeles are more greenish (this color persisting also in

the male) and have darker stigma and veins, especially in the

male, where they are almost black.

This species is one of the hosts of Stylo ps pad ficus Bohart.

Andrena (Micrandrena) dinognatlia Timberlake, n. sp.

This remarkable species, with its extremely large head, is

suggestive of the recently described A. vandykei Ckll. It differs

from the description of vandykei in the shape of the mandibles,

lack of a long slender spine on the malar space, the yellow band

of clypeus reaching lateral margins, the very dark stigma and

nervures, and in other details.

Male. Black, the tegulee and tarsi a little brownish and spurs

of tibiae pale testaceous. Head subquadrate, nearly twice as broad

as thorax, about one and one-third times broader than long, and

widest at the anterior end. Clypeus very large, depressed, but

the outer half of the lateral extensions convex and almost pulvi-

nate. The anterior margin of clypeus between these bosses broadly

concave. Clypeal band light yellow, broad, covering whole width

and almost entire length of clypeus on the lateral extensions and

slightly more than half the length in median line. Dorsal margin

of the band rather strongly notched on each side to form three

nearly equal lobes, of which the middle one is a little longer and

more or less emarginate. Cheeks very broad, aubangular, with

the widest part well above the middle of eye. Malar space rather

well developed but transverse, and widening behind. The cheeks

and malar space combined form a wide space behind and in front

of eye, and the antero-inferior corner of this space forms a sharp

angle but is not produced into a spine. Mandibles very large and

long, bent at right angles a little beyond the strongly expanded

base, having the portion beyond the bend nearly straight, mod-

erately slender, with a very blunt inner tooth close to the apex.

Labrum small, transverse, the process hardly elevated above rest

of surface, polished, transversely quadrate, its apical margin coin-

ciding with margin of labrum. Vertex and frons very finely,

almost granular-tessellate, the frons also finely striate. Face

below antennae more shiny, finely tessellate, and the clypeus still

more shiny, with no punctures anywhere on face except extremely

minute ones. Cheeks finely tessellate and dullish. Antennae

blackish, rather long, the joints of flagellum mostly about one

and one-third times longer than thick. Joint III a little shorter

than IV plus V. Thorax with nearly uniform sculpture, minutely

tessellate and dullish, with very fine indistinct punctures. En-

closure of propodeum small, more opaque and more granular-

tessellate. Abdomen somewhat shiny, finely tessellate and almost

January, 1938]

TIMBERLAKE— ANDRENA

impunctate. Wings nearly hyaline, not darker at apex. Veins

very dark, almost black, the stigma a little more reddish. Vena-

tion of the Micrandrena type, with the first intercubitus close' to

the stigma. Pubescence rather thin and long, pale fulvous, be-

coming paler beneath and creamy on the clypeus. Sides of face,

scapes, and cheeks behind summits of eyes with considerable

black hair. Middle segments of the abdomen with pubescence

short, thin, depressed, with no indication of bands. Length, 7

mm.; fore wing, 5.7 mm.

The length of body in my small series varies from about

6 to 7 mm. The size of the head varies considerably and in

the smallest specimen is hardly half as large as in the holo-

type, and the peculiar modifications of the clypeus and mandi-

bles are much less accentuated. The head also is less quadrate

and not broader anteriorly but is transversely oval.

Described from five males (holotype and paratypes) col-

lected at Davis, Calif., February 3 and March 2, 1936 (R. M.

Bohart) ; and one male (paratype) in collection of the Oregon

State Agricultural College, collected at Corvallis, Oregon, May

8, 1927 (Velma T. Shattuck). Mr. Bohart writes that the Davis

specimens were frequent in early spring on a coiled orange

flowered weed, which I presume is Amsinckia.

Andrena (Platandrena) pensilis Timberlake, n. sp.

This is easily distinguished from A. nasonii Rob. and from

the other Pacific Coast species of Platandrena by the shining

clypeus with long pendent hairs in the middle, by the opaque

mesonotum, and dullish abdomen which has the first tergite

finely and densely punctured.

Female. Black, including mandibles, antennae, legs and

tegulae. Tibial spurs yellowish white. Head much broader than

long. Clypeus large, depressed on disk, shining, finely, rather

closely punctured, the punctures becoming finer and closer later-

ally. Sides of face below antennae sculptured much like the sides

of clypeus. Frons and vertex dull, minutely striate. Cheeks

rather shiny, with a fine irregular reticulation. Facial foveae

cuneate, very broad and light brown above, almost acute below

and ending slightly below level of top of clypeus. Third antennal

joint almost as long as the next three joints combined. Process

of labrum low, very broad, rounded at apex. Mesonotum opaque,

very minutely ruguloso-tessellate and with very minute indis-

tinct punctures, but the scutellum anteriorly a little shiny in

some lights. Mesopleura convex anteriorly, somewhat flattened

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 1

behind, with a weak transverse ridge just above middle coxae.

Surface of pleura dull above, much like the notum, more shiny

below. The dorso-posterior surface of propodeum dull, the en-

closure large, granular-reticulate and further defined by a raised

line. Sides of propodeum meeting dorsal surface in a right angle,

the surface tessellate, rather shiny, impunctate. Middle tibiae

strongly cuneate, fully twice as wide at apex as the middle or

hind basitarsi. Abdomen broad (about 3.25 mm. wide), slightly

shiny, very finely tessellate and minutely punctured. On disk

of tergite I the punctures are distinct and very close, but they

become progressively fainter and are much sparser on tergites

II to IV. Tergite II depressed about one-third in the middle.

Venter of abdomen more shiny, with minute piliferous punctures.

Pubescence ochreous, nearly uniform in tinge throughout, except

as noted. Hair of head moderately abundant, densest on the

cheeks. Hair of clypeus thin, rather erect and not very long,

except in middle where there are a few very long coarser fuscous

or brownish hairs pendent from upper part of disk. These long

hairs hug the surface, except that they curl out at tips, and the

w'hole hair of clypeus has a frizzly appearance. Hair of meso-

notum mostly very short, with a few longer hairs intermixed;

that of the pleura much longer. Floccus of propodeum long and

curled, the hairs finely plumose. Anterior margin of the sides

of propodeum with a vertical row of similar hairs which, with

those on dorsal margin, form a large pocket to hold pollen. Hair

of legs pale, becoming golden ochreous on inner side of tarsi.

Flocculus of hind trochanters moderately long. Scopa of hind

tibia short, dense, the hairs on outer surface almost vertically

erect and not at all concealing surface, those on lower margin a

little longer, very minutely plumose, and curled backward at tips

(the longest of these scarcely longer than half the greatest width

of tibia). Hairs on dorsal margin of tibia more reclinate, denser,

more evidently plumose. Abdomen with pale hair, very fine and

depressed on disk of tergites and forming a narrow fascia at apex

of tergites II to IV, broadly interrupted in middle on II. Fimbria

pale brownish, lighter toward the sides. Wings subhyaline, not

darker at apex. Stigma and veins, except subcosta, reddish brown.

Basal vein meeting nervulus. Second cubital cell rather small,

a little oblique, and receiving recurrent vein a little beyond middle.

Length, 9.5 mm.; fore wing, 6.6 mm.

Male. Similar to the female, except in usual sexual char-

acters, but abdomen hardly fasciate. Pubescence entirely light,

pale ochreous, or whitish. Clypeus covered with rather dense

hair, forming the usual brush. Sculpture very nearly as in the

female, but enclosure of propodeum very finely, mostly longi-

tudinally, wrinkled; first tergite with very fine, much less dense

punctures than in the female, not differing obviously from fol-

lowing segments. Head very ordinary in structure, wider than

January, 1938]

TIMBERLAKE— ANDRENA

long:. Cheeks rounded behind, not very wide. Mandibles ordinary,

toothed within, not at all decussate. Antennae of moderate length,

the flagellum rather stout; third joint about equal to IV plus V;

middle joints of flagellum about as long as wide. Wings as in

the female. Length, 8.5 mm.; fore wing, 5.9 mm.

Described from four females and seven males (holotype

female, allotype and paratypes) collected at Davis, Calif., on

Baeria, April 24, 1936 (R. M. Bohart) ; two females (para-

types), Stanford University, May (collector unknown) and two

females and one male (paratypes) without data from the old

insectary collection at Sacramento. I have also determined

stylopized specimens for Mr. Bohart from Yolo Causeway on

Baeria and Downingia pulchella, April 24 and May 5; two

males from Davis, on willow, April 1, and one male, Alturas,

Modoc Co., in June.

The male differs from A. nasonii Rob. in its considerably

larger size, much longer third antennal j oint, much more shiny

clypeus and in basal nervure meeting nervulus. It differs from

males of A. angustitarsata Vier. and A. opaciventris Ckll., in

having no dark (fuscous or blackish) hairs on sides of face,

and in the much shorter antennae, with the third joint relatively

much longer.

TWO NEW AMERICAN BUMBLEBEES

BY MYRON H. SWENK

Lincoln, Nebraska

Bombus (Bombus) bruneri Swenk, n. sp.

Female. Length 15.5 mm.; width of abdomen at second tergite,

8.5 mm. Head elongated, the malar space distinctly longer than

its width at apex, about one-third as long as the eye. Clypeus

polished and finely, weakly and sparsely punctured except at mar-

gins. Antennal joint III greatly exceeding V, nearly = IV-hV.

Pubescence ferruginous red, paling to yellowish gray on lower

pleurae which have no black pile; pubescence of segment VI and

venter whitish, also without black hairs; legs wholly clothed with

black hairs thinly intermixed among' the orange ones, the cheeks

and extreme sides of the occiput black-haired. No carina on

epipygium or hypopy.gium. Wings very slightly darkened, almost

subhyaline.

Holotype: Worker, “Texas,” in collection of University of

Nebraska.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 1

This species is a Bomhus sens, str. of the dumoucheli group,

closely allied to the South American B. dahlhomii Guerin, from

which it is readily distinguishable through its mostly orange-

red pubescence of the face (black in dahlhomii), wholly pale

pubescence of pleura (black below in dahlhomii) anid whitish

pubescence of pygidium and venter (black in dahlhomii). I

must confess some doubt, however, as to the accuracy of the

locality label, although directly under the original label is

another “worker new species from Texas.” This specimen, along

with a number of other Bomhi and other bees, was submitted to

the late W. H. Ashmead for study about 1898 and returned with

a label in his handwriting, “ Bomhus hruneri Ashm. 2 ”, though

no description was ever published by him. In now describing

and naming the species, I am pleased to retain this manuscript

name of Ashmead’s choosing.

Bomhus edwardsii fuscifrons Swenk, n, var.

? Bomhus sylvicola Titus, Can. Ent., xxxiv, pp. 39 and 43

(February, 1902).

Female and worker. Resembling B. edwardsii var. bifarius

Cresson, but the face with many black hairs on the sides and above

the antennae, the mesopleura covered with yellow pile to the base of

the legs, the mesoscutellum not or but feebly divided by black hairs ;

tergite I yellow, II and III ferruginous, without any black hairs.

Colored like B. sylvicola Kirby except for the black facial hairs,

but pubescence shorter. Differs from B. melanopygus Nylander in

the dorsum anterior to interalar band being yellow, without any

admixture of black hairs. B. huntii Greene is distinct in its yellow

face, black corbicular fringes and straight interalar band. The $

runs in Franklin’s table to B. sylvicola, passing edwardsii at

dichotomy 38 because of the wholly yellow mesopleura, while the

worker runs to B. edwardsii.

Male: Differs at once from the 5 of B. edwardsii (color variant

3 of Franklin) and B. sylvicola in the conspicuous tufts of black

facial hairs above the antennae and in the Wholly black hairs of

the cheeks. Runs in Franklin’s table to dichotomy 66, B. sylvi-

cola and B. geUdus.

Holotype: Colorado (C. P. Gillette, No. 1733) 2. Collec-

tion University of Nebraska. Allotype: Ward, Colorado,

male. Paratypes: Colorado (C. P. Gillette, No. 687) 1 2 ;

Ward, Colorado, 3 workers; southern Colorado (Wm. Shear)

1 worker; Denver, Colorado, September, 1900 (F. Dormann),

1 worker.

January, 1938]

BLAISDELL— A NEW SITONA

A NEW SPECIES OF SITONA FROM SAN MIGUEL ISLAND

(COLEOPTERA: CURCULIONID^)

BY FRANK E. BLAISDELL, SR.^

Sitona cockerelli Blaisdell, n. sp.

Form elongate, moderately narrowed anteriorly, about three

times as long as wide. Color black, obscured by the vestiture;

antennae rufo-testaceous toward base, club and last two funicular

segments darker; tarsi more or less rufo-piceous. Body densely

clothed with scales, intermingled with hairs and setae as given

below; punctation not visible. Prevailing color of the scales more

or less cinereous; those of the epistoma, occiput and legs notice-

ably iridescent. Scales of the frons and beak slightly oval, of

the epistoma narrowly so, those of the occiput narrow and elon-

gate, of the temporal and gular regions a little wider and elongate,

whitish and without intermixed hairs; the latter abundant about

the mouth-parts, without scales. Scales of the pronotum and

elytra moderately small, rounded to very slightly oval. On the

pronotum a narrow median and sub-lateral cinereous vittae are

evident, in the intermediate areas and laterally the scales are

cinereous and blackish intermixed. On each elytron the scales

of the second, third and fourth intervals are slightly reddish-

brown, very sparsely intermingled with others that are whitish,

forming broad and very inconspicuously marked vittae; those of

the first, fifth and sixth intervals noticeably more or less cinereous,

those of the lateral intervals intermixed with brownish and

blackish scales; intervals one, two, three, seven and eight more

or less tessellated with blackish or nebulous areas, especially on

the lateral and apical declivities.

Pubescence of the frons and beak moderate, hairs rather long,

especially over the eyes, semi-erect and radiating from about the

median sulcus; on the pronotum moderately abundant, darker in

color, setiform and arcuately decumbent. On the elytra the

serial, strial setae are slender, recumbent on the striae, particularly

in the central area, in length quite equal to the distance ' between

the obscured punctures; on the intervals the hairs are moder-

ately numerous, irregularly placed, the darker ones recumbent,

the paler more or less semi-erect, slightly subsquamiform and

stouter laterally than in the central area, appearing somewhat

serial when viewed longitudinally toward the apex.

Under surface of body densely clothed with very pale brownish

elongate-oval scales and slender hairs. Legs sparsely and very

irregularly clothed with similar scales, cinereous in color, and

hairs equally intermingled.

^ Stanford Medical School and Associate in Research, California Academy •f

Sciences, San Francisco, California.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 1

Head as wide as long before the post-ocular line, frons quite

flat; epistoma very feebly and broadly impressed, beaded at the

sides, a median carinula not evident, the sulcus linear and shallow.

Superior border of the eyes not noticeably prominent, the latter

oval, moderate in size, not prominent and less than a third longer

than wide. Antennse a little longer than width of prothorax, scape

extending to middle of eyes, slender in basal two-thirds and

gradually enlarged apically, a little longer than the first four

funicular segments combined; funicle moderately slender, first

segment swollen toward apex and about equal in length to the

second and third combined; second obconical and slightly enlarged

apically, equal in length to the fourth and fifth together; third

a little longer than wide, fourth and fifth equal in size and as

long as wide, sixth and seventh a little larger, equal, a little

wider than long and subtriangular in profile; club elongate, sub-

fusiform oval, a little more than twice as long as wide, equal in

length to the five preceding funicular segments.

Prothorax at middle about one-seventh wider than long, widest

at middle and there one-third wider than apex, the latter quite

truncate, angles small and acute; sides somewhat strongly arcuate

in middle three-fifths, thence gradually convergent and feebly,

broadly sinuate to apex, posteriorly sinuate in basal one-fifth and

brieflly subparallel before the distinct obtuse angles; base broadly

arcuate and a little wider than apex. Post-apical constriction

feeble, disk moderately convex.

Elytra about two and one-fifth times as long as the prothorax,

and about seven-tenths longer than wide; base slightly emargi-

nate, humeri prominent and broadly rounded; sides parallel,

slightly and very broadly sinuate behind the humeri, arcuately

convergent in about apical two-fifths, rather acutely rounded at

apex; disk somewhat plane basally between the humeri, thence

increasing moderately in convexity toward apex, laterally arcu-

ately declivous, narrowly so at humeri, deflexed surface feebly

convex and moderately indexed ; apical declivity somewhat

gradually arcuate; striae very fine, intervals flat on the dorsum,

slightly convex laterally, most so apically; fifth interval termi-

nating just below summit of declivity, the fourth and sixth meet-

ing at its apex and there slightly prominent and feebly tufted;

apices at the angle narrowly and densely clothed with cinereous

scales and few longer hairs.

Propygidium and pygidium protruded and deflexed in the

type, each densely punctate, the latter clothed with slender hairs

and narrow' elongate scales. Under surface of body densely in-

vested with very pale brownish elongate-oval scales and slender

hairs. Abdomen feebly convex, slightly impressed at middle of

first two segments; second segment on the median line equal in

length to the fifth, third and fourth equal and together about one-

fourth longer than the second. Legs sparsely and very irregularly

January, 1938]

BLAISDELL— A NEW SITONA

clothed with pale, elongate-oval scales equally intermixed with

pale hairs. Protibiae slightly arcuate in distal one-half:

Measurements. (Type) Length 11.5 mm.; width 2.5 mm.

Type, apparently a male in the eolleetion of the California

Aeademy of Seienees (No. 4539). Two specimens collected by

Prof. T. D. A. Cockerell, July, 1937, on San Miguel Island, off

of the California coast south of Point Conception, Santa Bar-

bara County. One paratype much paler in coloration, the darker

colors nearly obsolete. This species is apparently most closely

related to Sitona extrusus Casey of Lower California, which has

the seventh funicular antennal segment and eyes more elongate.

In cockerelli the seventh and eighth funicular segments are equal

in size and as long as wide; the eyes are oval and about one-

third longer than wide; sides of the prothorax behind the apical

angles feebly, broadly sinuate, not strongly constricted as in

extrusus. The individuals of different species of Sitona vary

greatly among themselves in vestiture, coloration and pubescence,

rendering the identification of many species very uncertain from

the too meager descriptions, with which the student has to work.

The above remarks are given as an excuse for the length of the

above description and as an incentive to authors to make greater

use of differential details.

GENUS DICTYDEA UHLER

(Homoptera, Issidae)

BY EDWARD P. VAN DUZEE

This genus was founded by Dr. Uhler in 1888 for two species

of Issids from Southern California, angustata Uhler and inter-

media Uhler. I have taken angustata in Mint Canyon, north of

Saugus, California, and Dr. E. C. Van Dyke has taken at Lytle

Creek, San Bernardino, Co., a series of a form that does not

seem to differ except in its larger size and darker color. D.

intermedia is a common species in Mint Canyon on the holly-

leaved cherry, Prunus illicifolia.

The two species described below have narrow elytra, allying

them slightly with genus Danepteryx, from which genus they

are, however, abundantly distinct.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 1

Key to the Species of Dictydea

Elytra about one-third as wide as long, 1

Elytra about one-fourth or less as wide as long, 2

1. Elytra fuscous or black, the entire costal and sutural margins

alternated with white; body varied with ^ 2 i\e,....angustata Uhler

Elytra margins alternated with white as in angiistata; disk

generally with an irregular transverse white vitta just before

the apex of the clavus, a white area on the clavus and another,

elongated, near the apex; these white areas crossed by the

black veins, intermedia Uhler

2. Elytra long, strongly decurved at apex, black with a sutural

white spot beyond the tip of the clavus, the margin sparsely

spotted with white. Length 6 mm., falcata Van D.

-. Elytra parallel, with the apex lanceolate and the costa

straight, the sutural margin white with! fuscous veins; body

varied with fuscous and pale. Length 4-5 mm.,

variegata Van D.

Dictydea variegata Van Duzee, n. sp.

Aspect of intermedia but with narrow lanceolate and pale

elytra. Leiigth. Male 4.50 mm., female 5 mm.

Male: Vertex a little shorter than in intermedia, distinctly

shorter on the median line. Front scarcely longer on the median

Carina than wide; lateral margins very feebly arcuate; carina

moderately prominent; sides with about four obscure pustulate

marks within the lateral carinae ; clypeus moderately convex as

in intermedia; pronotum broadly rounded before, a little longer

than in intermedia. Elytra narrow* as in falcata, slightly exceed-

ing the abdomen as in intermedia, their length four times their

width; sides parallel on basal two- thirds, the inner margin then

elliptically narrowed to a subacute apex; costa rectilinear. Ven-

tral valves triangular at apex, forming a rounded lobe below, the

upper angle produced in a tooth; ventral aspect of anal tube of

female ovate and flat, its lateral margins tumidly carinate; anal

tube of male broader than in intermedia, the ventral plates more

produced.

Color yellowish testaceous; sides of clypeus, an obscure vitta

on either side of the median frontal carina, a spot before the

antennae, another before the eyes, disk of the vertex, a broad vitta

either side of the median carina on the pro- and mesonotum,

femora and tibiae except the knees and coxae, and some areas on

the pleural pieces, infuscated. Elytra mostly whitish, the median

disk interruptedly infuscated, the nervures about the margin and

on the apical portion of the fuscous areas blackish.

January, 1938]

VAN DUZEE— DICTYDEA

Described from 42 specimens, representing both sexes, taken

by R. L. Usinger and the writer in Owens Valley, California,

in June, 1929, mostly at Independence but a few at Big Pine,

Inyo Co., California, all on sage brush (Artemesia). Holotype,

male. No. 4582, and allotype, female. No. 4583, Mus. Calif.

Acad. Sci., Ent., taken by R. L. Usinger, June 14, 1929, at Inde-

pendence. On account of the narrow elytra both this species

and the next would run to Danepteryx in Melichar’s key of 1906,

but their structural characters are those of Dictydea. The char-

acters in this species are liable to be obscured by a white bloom.

Dictydea falcata Van Duzee, n. sp.

Allied to angustata but with the front proportionately nar-

rower with the sides parallel, not feebly convexly arcuate as in

angustata and with longer scimitar-shaped elytra. Length to

tip of elytra 6 mm.

Male: Vertex as in angustata’, front as wide as its median

length, its sides essentially parallel, briefly arcuately narrowed

to the clypeus which is broader and more strongly convex at

base; carinae prominent; the surface smooth but scarcely polished.

In angustata the front is a little longer, its sides, feebly convex,

the carinae less prominent, the surface minutely pubescent when

fresh and the clypeus less tumid at base. Pronotum longer and

more acutely produced than in angustata leaving the vertex

shorter. Elytra about three times as long as its greatest width,

surpassing the abdomen by one-fourth its length, decurved at apex

with the veins more prominent and regular. In angustata the

elytra are shorter, rounded-angulate at apex with the costa

straight. Ventral valve of the genital segment longer and the

ventral aspect of the anal tube broader and flatter, with a small

apical notch.

Color as in angustata but the elytra with a roughly triangular

white spot on the sutural margin on which the fuscous veins are

prominent; the white marginal dots are less uniform, omit the

extreme apex, and become almost obsolete on the basal one-half

of the clavus and costa.

Described from one male in my collection, taken by Mr.

Fordyce Grinnell, June 5, 1910, at Pasadena, California. Type

No. 4584, Mus. Calif. Acad. Sci., Ent.

the pan-pacific entomologist [vOL. XIV, NO. 1

AMERICAN BEES OF THE GENUS CHELOSTOMA

BY CHARLES D. MICHENER i

University of California, Berkeley

Chelostoma is a small, holarctic genus of slender, black,

osmiine bees. In North America several species have been placed

in this group but most of them have since been transferred to

other genera, leaving only a small number of western species

in Chelostoma. Among the species thus removed is Prochelo-

stoma philadelphi (Robertson) from the eastern United States.

This insect might well remain in Chelostoma, perhaps as a sub-

genus. It differs from typical Chelostoma in the shape of the

third segment of the labial palpus, which tapers toward the

base in Prochelostoma whereas it is parallel-sided or tapers

slightly toward the apex in Chelostoma. The genitalia of Pro-

chelostoma are not strikingly different from those of Chelostoma.

Chelostomopsis is quite distinct from Chelostoma, the male

of the former having only six exposed tergites and having the

process of the coxopodite of the genitalia broadened apically.

The third segment of the labial palpus tapers basally and is

joined to the second a little before its apex. In the allied genus

Formicapis the third segment of its labial palpus also tapers

basally. Autochelostoma does not belong to the group of genera

near Chelostoma but is based upon a gynandromorphic speci-

men of Alcidamea producta.

The genus Chelostoma may be recognized by the following

characters :

Slender, black; first segment of labial palpus a little over

one-third to about one-fourth as long as second; third segment

compressed, apparently rigidly joined to second, about parallel-

sided or tapering slightly apically; maxillary palpi short, three-

or four-segmented; thorax elongate, the metanotum and dorsal

part of propodeum horizontal; prepectal carina absent; notaulices

long linear; first tergite with shallow longitudinal basal sulcus,

anterior face not bounded by carina; male with seven exposed

tergites and six exposed sternites; coxopodite of male genitalia

broad basally, produced to a long, very slender, process.

^ To Mr. P. H. Timberlake of Riverside, California, I wish to express my

appreciation for his helpful suggestions and for the opportunity to study his

fine collection of Californian Chdostowa.

January, 1938]

MICHENER— CHELOSTOMA

Key to the American Species of Chelostoma

Males

1. Seventh tergite ending in four slender processes, median pair

sometimes united for a part of their length mimitiim

... Seventh tergite ending in three processes 2

2. Processes of seventh tergite short (figure 2) ; posterior face

of propodeum above median pit smooth and polished; length

8 mm calif ornicum

... Processes of seventh tergite long (figure 1) ; posterior face

of propodeum rather dull; length 6 mm. or less 3

3. Maxillary palpus three-segmented; median tooth of seventh

tergite directed more ventrally than are the lateral teeth.

bernardinum

... Maxillary palpus four-segmented; median tooth of seventh

tergite in same plane as lateral teeth phacelise

Females

1. Posterior face of propodeum above median pit polished;

length about 8 mm. (rarely 6 V 2 mm.) calif ornicum

... Posterior face of propodeum rather dull; length less than

6 mm 2

2. Maxillary palpus four-segmented phacelisc

... Maxillary palpus three-segmented 3

3. Anterior margin of clypeus between tubercles minutely crenu-

late; facial line about equal to transfacial line bernardinum

... Anterior margin of clypeus between tubercles straight; facial

line distinctly longer than transfacial line minutum

Chelostoma californicum Cresson

calif ornicum Cresson, 1878, Trans. Am. Ent. Soc., 7:108, $

Schletterer, 1889, Zool. Jahrb. (Syst.), 4:649, $

Titus, 1906, Proc. Ent. Soc. Wash., 7:161, 2 S

albicinctum Provancher, 1895, Nat. Can., 22:190 (Heriades) , $ $

odontura Cockerell, 1902, Bull. So. Calif. Acad. Sci., 1:139

(Heriades ) , $

dolichosoma Cockerell, 1922, Ann. Mag. Nat. Hist., (9)10:456

(Robertsonella) . $ , n. syn.

This is the largest and most conspicuously pubescent Amer-

ican species in the genus. Length 8 to 9 mm. (rarely only

6V2 mm) .

Male: Pubescence fairly abundant, whitish, forming apical

bands on tergites; first segment of labial palpus about one-third

as long as second; maxillary palpi short, three-segmented, first

segment very short, second and third longer and subequal in

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 1

leng-th; glossa about as long as facial line; body finely punctate;

dorsum of propodeum very finely and closely roughened, dull;

posterior face of propodeum above pit polished and impunctate,

elsewhere shiny and coarsely punctate; abdomen a little more

finely punctate than thorax; second! sternite with median eleva-

tion, seventh tergite with median depression and three apical

processes; parameres and process of coxopoditesi of genitalia bent

downward apically.

Female: Similar to male; face broader; clypeus closely punc-

tate, with a pair of variable, often inconspicuous, widely sepa-

rated tubercles on anterior margin; edge between marginal

tubercles of clypeus straight, but medially with a pair of pre-

marginal tubercles; punctures of posterior face of propodeum

finer than in male; hind metatarsus longer than remaining seg-

ments of tarsus together.

Type locality: California. Lectotype in the collection of the

Academy of Natural Sciences of Philadelphia. A specimen of

alhicinctum is in the United States National Museum, and the

holotype of dolichosoma is in the Cockerell collection. Both

of these appear to be( typical C. californicum.

California: Tetley Park, San Bernardino Mountains, May 16

and 23, 1936, mostly on Nemophila (Timberlake & Michener) ;

Banning, May 28, 1928 (E. C. Van Dyke) ; Riverside, May 15,

1933, on Phacelia distans (Timberlake) ; Redlands (no. 12) (F. R.

Cole) ; Potwisha, Sequoia National Park, 2000' to 5000 feet eleva-

tion, May 15, 1929 (E. C. Van Dyke) ; mouth of Deep Creek,

May 5, 1936, on Eriodictyon trichocalyx (Linsley & Timberlake) ;

Marsh Creek, Mount Diablo, April 26, 1937, on Phacelia (G. E. &

R. M. Bohart & Michener) ; Antioch, April 18, 1936 (G. E. Bo-

hart) ; Swartout Valley, June 3, 1928, on Phacelia davidsonii

(Timberlake) .

Chelostoma phaceliae Michener, n. sp.

This is a small black species. Length about 5 mm.

Male: Pubescence sparse, dull white, most abundant on cheeks

and face and forming narrow broken abdominal bands ; body finely

and rather evenly punctate, rather dull; first segment of labial

palpus about one-fourth as long as second, varying somewhat in

the paratypes; maxillary palpi short, four-segmented; first seg-

ment short and globular, second longest, third shorter, fourth still

shorter, only a little longer than first, nearly as long as third' in

some paratypes; mouth-parts very long, glossa nearly twice as

long as facial line; horizontal area of propodeum finely rugose.

January, 1938]

MICHENER— CHELOSTOMA

shorter than metanotum; punctures of scutum separated by less

than their diameters and a little coarser than those of vertex.

Wings large, dusky, veins and stigma black; second abscissa of

cubital vein shorter than fourth. Abdomen slightly more finely

punctate than head or thorax; seventh tergite ending in three

long processes, all in the same plane, median longest, laterals

slightly curved inward; second sternite with a transverse raised

area; apices of abdominal segments narrowly brownish.

Female: Similar to male. Face a little broader, slightly longer

than broad; eyes narrower; clypeus not very closely punctate, its

anterior margin with a pair of sublateral tubercles between which

the margin is straight; hind metatarsus very slightly shorter than

remaining segments of tarsus ; abdominal hair bands usually com-

plete; scopa white.

Holotype male (Calif. Acad. Sci., Ent. No. 4491), allotype

female (Calif. Acad. Sci., Ent. No. 4492) and six paratypes from

Altadena, California, May 11, 1935, on Phacelia tanacetifolia.

Additional paratypes are from the following localities in Cali-

fornia: Altadena, June 11, 1933, April 19, 1935, May 19, 1935,

June 1, 1935, and May 2, 1936, all on Phacelia; one from San

Gabriel Canyon, Los Angeles County, June 25, 1933, on Lotus;

three from Sespe Canyon, Ventura County, April 22, 1934, on

Phacelia; two from Los Angeles, June 16, 1934, on Phacelia

ramosissima (all Michener collector) ; six from Rincon Creek,

near Carpinteria, July 16, 1928 (E. C. Van Dyke) ; five from

Idyllwild, San Jacinto Mountains, June 23, 1928 (E. C. Van

Dyke) ; two from Fillmore, June 27, 1937 (B. E. White) ; thirteen

from Riverside, April 20, 1926, April 26 and May 4, 1927, May

12 and June 4, 1930, April 8, 1932:, May 14, 1936, on Phacelia

ramosissima and P. distans (Timberlake) ; sixteen from Puente

Hills, Los Angeles County, May 9 and' 10, 1926, on Phacelia dis-

tans (Timberlake). Paratypes will be found in the collections

of the California Academy of Sciences, the United States National

Museum, Prof. T. D. A. Cockerell, Mr. P. H. Timberlake, Mr.

E. G. Linsley, Mr. G. E. & Mr. R. M. Bohart, Mr. B. E, White

and the author.

Additional locality records are as follows. California: Mari-

posa County, July 2, 1933 (G. E. & R. M. Bohart) ; Arroyo Seco,

San Gabriel Mountains, July 6, 1922i (J. C. Bridwell, U. S. N. M.) ;

California Hot Springs, Tulare County (E. R. Leach) ; Idyllwild,

July 3, 1930, on Erigeron foliosus var. stenophyllus; Tetley Park,

San Bernardino Mountains, May 13, 1934, on Potentilla; Moun-

tain Home Creek, San Bernardino Mountains, June 17, 1934, July

4, 1935, on Erigeron and Phacelia ramosissima; Swartout Valley,

June 3, 1928, on Phacelia calif ornica; Big Pines Camp, San Gabriel

Mountains, July 11 to 13, 1927, on Phacelia ramosissima and P.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 1

californica; Coffee Camp, Tulare County, June 8, 1925 on Phacelia;

General Grant National Park, June 27, 1929, on Phacelia', Berke-

ley Hills, June 4 and 16, 1933, on Phacelia', Green Valley, Solano

County, June 9, 1933, on Phacelia (all Timberlake) ; Cobb Moun-

tain, Lake County, May 7, 1936 (R. M. Bohart) ; Marsh Creek,

Mount Diablo, May 12, 1937, on Phacelia (G. E. & R. M. Bohart).

Oregon: Wildhorse Canyon, Andrews, 4270 feet elevation, July

5, 1927 (H. A. Scullen).

Washington: Walla Walla, May 30, 1937 (G. E. & R. M.

Bohart) .

Specimens from the last two California localities average a

little more finely punctate than most specimens. On account

of the elongated mouth-parts and four-segmented maxillary palpi,

this species might seem to represent a genus or subgenus distinct

from Chelostoma. However, it appears to be so closely related

to C. bernardinum, a species with normal mouth-parts, that a

name is not warranted at present. The genitalia differ from those

of C. minutum primarily in the broader, more rounded apices

of the parameres. The female of C. phacelice is distinguished

from C. bernardinum and C. minutum by the unusual mouth-parts,

and the straight margin of clypeus between the tubercles. The

male can be recognized by the three teeth of the seventh tergite,

which are in the same plane. In many specimens the median

tooth is more elongate and slender than in the individual figured,

while in others it is slightly shorter.

Chelostoma bernardinum Michener, n. sp.

This is a small black species with the form similar to that

of C. phacelice. Length about 5 mm. or a little less.

Female: Finely punctate, slightly shiny; facial line about as

long as transfacial; clypeus closely punctate, anterior edge with

distinct tubercle on each side, between which the margin is

minutely crenulate; second segment of labial palpus nearly three

times as long as first; maxillary palpi three-segmented, first seg-

ment short and globular, second longer and third a little longer

than second; glossa a little longer than facial line; flagellum with

under side faintly dull reddish; horizontal area of propodeum

finely rugose, shorter than metanotum; punctures of scutum sepa-

rated by less than their diameters and slightly finer than C.

phacelice, very slightly coarser than those of vertex; punctures

of scutellum a little finer and closer than those of scutum ; tegulse

piceous; wings dusky, veins and stigma black; hind metatarsus

very slightly longer than remaining segments of tarsus together;

January, 1938]

MICHENER— CHBUOSTOMA

abdomen slightly more finely punctate than head and thorax ; apices

of abdominal tergites narrowly brown; pubescence sparse, dull

white,, forming very narrow, weak abdominal bands on tergites;

scopa white.

Male: Similar to female but more shiny and more finely punc-

tate; scutum with punctures fine and separated by more than their

diameters; seventh tergite with three long teeth, median largest,

laterals slightly curved inward; median tooth directed slightly

more ventrally than others so that the teeth are not on the same

plane; second sternite with a transverse elevation; teeth of

seventh tergite suffused with brown; margins of tergites, especially

laterally, rather broadly brown; abdominal hair bands absent.

Holotype female (Calif. Aead. Sci., Ent. No. 4493), allo-

type male (collection of author), and six female paratypes:

Tetley Park, San Bernardino Mountains, California, May 16,

1936, on Nemophila (Michener) ; six paratypes, same locality.

May 16 and 23, 1936, and May 15, 1937, on Nemophila integri-

folia arvd Phacelia davidsonii (Timberlake) ; two paratypes,

same locality (labeled Crestline), May 13, 1934, on Nemophila

inter gri folia (Timberlake) . Paratypes are in the collection of

Mr. P. H. Timberlake and the author.

This species is perhaps most nearly related to C. phacelice,

from which it differs by the finer punctation, shorter mouth-

parts, three-segmented maxillary palpi, and the more ventrally

directed median tooth of the seventh tergite of the male. One

specimen is abnormal, having the median ocellus reduced to a

slender line, somewhat widened at one end, and with a small

pit in the broad portion.

Chelostoma minutum Crawford

This is a small, very slender, black species; length 4 to 5 mm.

Male: Second segment of labial palpus from two and one-half

to nearly five times as long as first (according to subspecies) ;

maxillary palpi three-segmented, first segment shortest, second

somewhat longer, and third nearly or quite as long as first two

together; glossa about one and one-half times as long as facial

line; horizontal area of propodeum longer than metanotum, and

very finely longitudinally rugose ; punctures of abdomen finer than

those of thorax; seventh tergite armed with four long processes,

median ones longer and broader than laterals; parameres pointed

at apices; process of coxopodites practically straight; second ster-

nite with transverse elevation; abdominal hair bands absent.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 1

Female: Similar to male; facial line longer than transfacial;

clypeus not closely punctured, its margin straight between the

two tubercles; hind metatarsus shorter than remaining tarsal

segments together.

While not very much shorter than C. phacelicB, this species

is nevertheless considerably more slender. The female differs

from C. phacelics hy the smaller size, finer punctation, longer

face, absence of abdominal hands, shorter mouth-parts, and

three-segmented maxillary palpi. The male is distinguished by

the same characters, in addition to the quadridentate seventh

tergite. The male of C. minutum is here described for the first

time.

Chelostoma minutum may be separated into several sub-

species, as indicated below:

SUBSPECIES OP CHELOSTOUE ICNUTUU

cockerelli

nicutuiD

marulnatum

inclaulum

Uarglna of

abdominal

nearly black

broadly brownish

tergltoB

Length

about 5 M.

about S K*

usually Just

about 5 ns.

over 4 mm*

Median notch

deeper than

usually nearly

half as deep as

of eeventh

length of

as deep as

length of lateral

tergite

lateral proceae

lateral process

length of

lateral process

proetsB

Length

of let.

aT.

10. e

10.2

B.B

9.7

eegment

labial

oaxe

palpue

min.

Length

of 2nd.

aT*

43.7

30.0

29.2

27.0

flOgD 62 Xi

labial

naxa

palpue

oln.

Ratio

aT.

4.2

3.3

3.2

2.B

of 2nd.

max.

4.9

3.6

3.7

3.1

to let.

min.

3.6

2.9

2.B

2.5

Flower preference

Eriodictvon

Phacella

OeeertB and desert

Sierra Nevada and

Lowlands of

Cletrlbutlon

sides of mountains

mountains of

southern Calif.

Mt. Liable, Calif*

of Calif.

southern Cellf.

The table above summarizes the subspecies of C. minutum.

Measurements of the segments of the labial palpi were made with

an eye piece micrometer, and the figures are merely relative. In

order that the significance of these numbers may be judged, it should

be stated that the palpal segments of fifteen specimens of typical

minutum, fifteen of cockerelli, eight of marginatum, and three of

incisulum were measured.

January, 1938] michener-chelostoma 43

Chelostoma minutum minutum Crawford

minuta Crawford, 1916, Ins. Insc. Mens., 4:102$

minutum Cockerell, 1935, Pan-Pac. Ent., 11:52

Second segment of labial palpus averaging 3.3 times as long

as first; posterior margins of tergites narrowly, obscurely

brownish ; emargination between median processes of seventh

tergite of male deeper than length of lateral processes.

Type locality: Tuolumne Meadows, California. Type in

United States National Museum.

California: Swartout Valley, June 3, 1928, on Phacelia david-

sonii; Big Pines Camp, San Gabriel Mountains, July 13, 1927 and

July 2, 1934, on Phacelia calif ornica; Tetley Park, May 15; 1937,

on Phacelia davidsonii, and May 16 1936, on Nemophila integri-

folia; Ledge Trail, one-fourth way up, Yosemite, June 25, 1926, on

Draperia; Pohona Trail, above Yosemite, June 16, 1926, on Phacelia

(all Timberlake) ; Tallac, Lake Tahoe, July 17, 1915 (E. P. Van

Duzee) .

The following specimens provisionally placed in minutum,

may be referred to other subspecies when more specimens are

known from these localities:

California: Modoc National Forest, June 16, 1933, collected

in flight (K. A. Salman) ; Summit Lake, Mt. Lassen, 6700 feet

elevation, July 21 to 22, 1937 (F. X. Williams) ; Ridge Route,

Los Angeles County, June 13, 1936 (H. A. Scullen). Oregon:

Pamelia Lake, Mt. Jefferson, 3000 feet, July 27, 1907 (J. C. Brid-

well, U.S.N.M.). Washington: Spokane, July 2, 1917 (M. C.

Dyar, U.S.N.M.)

Chelostoma minutum cockerelli Michener, n. subsp.

Second segment of labial palpus about four times as long as

first; posterior margin of tergites narrowly, obscurely brownish;

emargination between median processes of seventh tergite of male

deeper than length of lateral processes.

Holotype male (Calif. Acad. Sci., Ent. No. 4494), allotype

female (Calif. Acad. Sci., Ent. No. 4495), and thirteen para-

types: Andreas Canyon, near Palm Springs, California, on

Eriodictyon trichocalix {crassifolium) , April 10, 1936 (Mich-

ener) , and thirteen paratypes with same data, April 11 (Tim-

berlake) . Paratypes in collections of Prof. T. D. A. Cockerell,

Mr. P. H. Timberlake, E. G. Linsley, G. E. and R. M. Bohart,

and the author.

the pan-pacific entomologist [vOL. XIV, NO. 1

Additional localities for cockerelli are: California, mouth of

Deep Creek, May 5, 1926, on Eriodictyon trichocalyx; Lone Pine

Canyon, Inyo County, July 4, 1933, on Eriodictyon trichocalyx

(all Timberlake) ; Palmdale, April 11, 1936 (G. E. & R. M.

Bohart) ; Lancaster, April 10, 1936 (G. E. & R. M. Bohart).

This form differs from typical C. minutum primarily in the

longer seeond segment of the labial palpus and the longer glossa.

This is the desert and semidesert form of the eomplex. It seems

to prefer the flowers of Eriodictyon, while other subspeeies visit

chiefly PJmcelia. Named after Prof. T. D. A. Coekerell, with

whom I eollected at the type loeality.

Chelostoma minutum marginatum Miehener, n. subsp.

Second segment of labial palpus about three times as long as

first; posterior margins of tergites rather broadly brownish;

emargination between median processes of seventh tergite of male

nearly as deep as length of lateral processes.

Holotype male, allotype female, and seven paratypes: Puente

Hills, Los Angeles County, California, on Phacelia distans, April

12, 1925, Mareh 14 and 21 and May 9, 1926 (Timberlake).

Paratypes: three from Eagle Rock Hills, Los Angeles County,

on Rhamnus crocea, April 14, 1933 (Miehener) ; five from

Eagle Roek, on Salvia mellifera, April 7, 1936 (Miehener). The

holotype and allotype will be returned to the eolleetion of Mr.

P. H. Timberlake at Riverside, California. Paratypes are in

the eollections of the California Aeademy of Seiences, Mr. Tim-

berlake, and the author.

Additional specimens of marginatum are from the following

localities in California: Riverside, on Phacelia distans, March

21, 1926 (Timberlake) ; the Gavilan, on Rhus trilobata, April 18,

1937, and March 19, 1936 (Timberlake); Altadena, on Eriodictyon

crassifoliu(m, May 2, 1936 (Miehener). Specimens from the

Gavilan are larger and blacker than the more typical specimens

of the subspecies.

This form differs from typical minutum and from cockerelli

in the brownish margins of the tergites. The average length of

the individuals of a series of marginatum is less than that of

any other subspecies.

Chelostoma minutum incisulum Miehener, n. subsp.

Second segment of labial palpus about three times as long as

first; posterior margins of tergites rather broadly brownish;

January, 1938]

MICHENER— CHELOSTOMA

emargination between median processes of seventh tergite of

male about half as deep as length of lateral processes.

Holotype male and two male paratypes: Marsh Creek, Mount

Diablo, California, April 26, 1937, on Phacelia (Michener) .

Another male paratype bears the same data but was eolleeted

by G. E. and R.i M. Bohart. Two females eolleeted at the same

time are apparently indistinguishable from marginatum exeept

by the slightly larger size.

C. m. incisulum differs from marginatum in the relatively

shallow notch between the median processes of the seventh ter-

gite of the male. The size is about as large as in typical minutum.

1. Seventh tergite of Chelostoma phacelise Michener, male; 2

Same of Chelostoma calif ornicum Cresson, male; 3. Same of Chelos-

toma minutum cockerelli Michener, male; 4. Same of Chelostoma

minutum marginatum Michener, male; 5. Same of Chelostoma

minutum incisulum Michener, male; 6. Dorsal view of male geni-

talia of Chelostoma minutum Crawford; 7. Same of Chelostoma

calif ornicum Cresson; 8. Posterior view of male genitalia of

Chelostoma calif ornicum Cresson; 9. Lateral view of male geni-

talia of Chelostoma califomicum Cresson; 10. Dorsal view of apices

of parameres of Chelostoma phacelise Michener; 11. Lateral view

of male genitalia of Chelostoma minutum Michener.

(Figures 1-5 are drawn to the same scale.)

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 1

PROCEEDINGS OF THE PACIFIC COAST

ENTOMOLOGICAL SOCIETY

One Hundred and Fortieth Meeting, April 28, 1935

Annual field meeting, held in Alexander Valley, Sonoma County,

California. Members present: E. 0. Essig, C. D. Duncan, R. L.

Usinger, Janet Mabray, William Hovanitz, J. C. Lindahl, A.

Mallis, A. E. Michelbacher, K. D. Sloop, G. R. Wilson, P. C.

Ting, J. B. Steinweden, and E. G. Linsley. Visitors present: M. D.

Leonard, Mrs. E. 0. Essig, Miss M. I. Essig, R. F. K. Smith,

Mrs. P. C. Ting and son. Miss G. Hallauer, Mr. and Mrs. H. M.

Armitage and daughters, Mrs. G. R. Wilson and family. Dr. and

Mrs. J. F. Lamiman, Miss N. Bruns, William Upholt, R. Kitchell,

G. Smith, R. M. Bohart, G. Bohart.

The Society met at Callistoga at 10 a. m. and drove leisurely

to the Alexander Valley, stopping frequently for collecting. Lunch-

eon was served in the early afternoon, after which collecting w?'

resumed. Although the sky was overcast and rain fell in later

afternoon, many rare captures were reported. — E. G. Linsley,

Secretary.

One Hundred and Forty-first Meeting, September 7, 1935

Meeting held at 2 p. m. in the entomological laboratories of

the California Academy of Sciences, San Francisco, California.

Members present: E. 0. Essig, E. C. Van Dyke, F. E. Blaisdell,

F. H. Wymore, P. C. Ting, A. R. Mead, C. D. Duncan, Janet

Mabry, E. C. Zimmerman, J. L. Gressitt, E. P. Van Duzee, J. B.

Steinweden, and E. G. Linsley. Visitors present: Elwyn Day bell,

Willian Upholt, G. W. Schultz, E. S. Ross, Donald DeLeon.

Following the transaction of other business, the nominating

committee, consisting of Dr. E. C. Van Dyke, Dr. F. -E. Blaisdell,

and Mr. E. P. Van Duzee, proposed that the present officers be

retained for another year. The proposal was accepted and the

officers unanimously re-elected.

The membership committee suggested the following as mem-

bers of the Society: Dr. Donald DeLeon, Mr. William Upholt, Miss

Elwyn Daybell, Mr. E. S. Ross, and Mr. G. W. Schultz. They

were unanimously elected.

Prof. Essig announced the appointment of Dr. F. E. Blaisdell

to the publication committee of the Pan-Pacific Entomologist to

serve in place of Mr. Grant Wallace. He also extended to Mr.

Van Duzee the thanks of the Society for his splendid work in

editing the journal, and to Mr. E. R. Leach for his services as

the publication’s treasurer.

Mr. Linsley read a letter from the Hawaiian Entomological So-

ciety inviting the Pacific Coast Entomological Society to Honolulu

January, 1938]

PACIFIC COAST ENT. SOCIETY

during the summer of 1937 or 1938. After considerable discussion

it was decided to accept this invitation and to try and gain the

support of other similar organizations of the Pacific Coast.

Prof. Essig then introduced Mr. Elwood Zimmerman who pre-

sented an illustrated lecture on his recent trip through Polynesia

as a member of the Mangarevan Exposition of the Bishop Museum,

in Honolulu. Mr. Zimmerman discussed some of the peculiarities

of island faunas and floras and exhibited some of the material

which he had collected. Following a discussion of Mr. Zimmer-

man’s talk, the meeting was adjourned. — E. G. Linsley, Secretary.

One Hundred and Forty-second Meeting, November 30, 1935

Meeting held at 2 p. m. in the entomological laboratories of

the California Academy of Sciences, San Francisco, California.

The following members were present: E. 0. Essig, R. W. Doane,

H. E. Burke, K. A. Salman, A. E. Michelbacker, J. L. Gressitt,

D. De Leon, J. Reitzel, E. P. Van Duzee, H. H. Keifer, J. 0.

Martin, P. C. Ting, G. F. Ferris, F. R. Platt, E. C. Van Dyke,

A. R. Mead, E. R. Leach, E. S. Ross, C. D. Duncan, W. H. Lange,

Jr., E. C. Zimmerman, William Upholt, Isabel McCracken, William

Hovanitz, and E. G. Linsley. The following visitors were also

present: L. B. Boyer, S. F. Bailey, G. E. Bohart, R. M. Bohart,

M. A. Stewart, C. L. Lin, E. C. Day, J. C. von Blocker, Jr.,

D. B. Scott, Jr., Laura M. Henry, Louise Henry, Edith-Mae Grim-

menstein, Edgar Smith, Arthur Smith, P. A. Harvey, and M. A.

Cazier.

The minutes of the previous meeting were read and accepted.

The Society unanimously elected to annual membership: Dr.

M. A. Stewart, Dr. S. F. Bailey, Dr. Paul Harvey, Messrs. Richard

and George Bohart, Miss Louise Henry, Miss Edith-Mae Grim-

menstein, Mr. David Scott, Messrs. Arthur and Edgar Smith, Mr.

Mont A. Cazier, and Mr. J. C. von Blocker, Jr. Upon the recom-

mendation of Mr. Linsley, honorary membership in the Society

was extended to Dr. Lawrence Bruner.

Mr. Leach reported on the financial status of the Pan-Pacific

Entomologist and made a plea for new subscribers.

Mr. Zimmerman presented to the historicalj files of the Society

a letter written by Charles Fuchs, early California Coleopterist.

After the completion of matters of business, a symposium was

held on “Some Unsolved Problems of Entomology.”

Professor Essig introduced the subject by a discussion of

certain unsolved problems in the field of insect biology. He par-

ticularly stressed the inadequacy of our knowledge of insects in

relation to climate, insect populations, aestivation and hibernation,

and geographical distribution.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 1

Professor Essig was followed by Dr. Salman who discussed

some problems of Forest Entomology: He brought out the need

for reduced costs of control^ studies in nutrition, host relationship,

inter-relationships of forest insects, and improved methods of

handling plant material experimentally.

Dr. Van Dyke spoke of some of the unsolved problems' in insect

taxonomy and indicated a need for more phylogenetic studies of

insects. He also mentioned a number of unsolved life history prob-

lems {Spondylis, Dystaxia, Schizopiis, and' others) as well as cer-

tain “lost species” (Omus submet allicus, Geotrupes occidentalis,

etc.)

Following Dr. Van Dyke’s remarks there was a general dis-

cussion by Dr. Ferris, Dr. Stewart, Mr. Keifer. Mr. Van Duzee,

after which! the meeting adjourned. — E. G. Linsley

One Hundred and Forty-third Meeting, March 7, 1936.

Meeting held at 2:00 p, m. in the entomological laboratories of

the California Academy of Sciences, San Francisco, California.

Members present: E. C. Van Dyke, J. 0. Martin, E. R. Leach,

A. R. Mead, A. E. Michelbacher, S. F. Bailey, Dudley Moulton,

G. F. Ferris, G. R. Wilson, J. B. Steinweden, Wm. Hovanitz, Isabel

McCracken, D. B. Scott, Jr., E. 0. Essig, Laura M. Henry, A. T.

McClay, E. J. Fredrick, and R. H. Freese. Visitors present: J. R.

Clark, W. E. Simonds, Janet Mabry, and Paul DeBach.

The Society unanimously elected Miss Mabry and Mr. DeBach

to membership.

Prof. Essig appointed Mr. Steinweden (chairman), Mr. Wilson,

and Mr. Ting as a committee to determine the time and place of

the annual field meeting.

Dr. Van Dyke announced that Mr. Van Duzee, who had been

seriously ill, was improvipg and that during his illness he would

assist with the editing of the Pan-Pacific Entomologist.

Prof. Essig then introduced Mr. Dudley Moulton, former Direc-

tor of Agriculture for the State of California, who presented an

interesting discussion of some of the experiences he had encountered

in the study of the Thysanoptera. Mr. Moulton exhibited his note-

books, check-lists, keys, and catalogues of the order which he has

maintained up to date. He mentioned that about one thousand

papers have been published on the Thysanoptera and exhibited

photomicrographs of many types.

Dr. Bailey briefly outlined the work being carried on at Davis,

Calif., on the transmission of tomato wilt virus by thrips.

At the close of the discussion, the Society was favored with a

display of remarkable drawings of genera of Coccidse, Which had

been prepared by Prof. Ferris. — E. C. Zimmerman, Secretary pro

tern.

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Vol. XIV

April, 1938

No. 2

THE

Pan -Pacific Entomologist

Published by the

Pacific Coast Entomological Society

in co-operation with

The California Academy of Sciences

CONTENTS

LINSLEY, NOTES ON PLEOCOMA 49

LING, A FEW CADDIS FLIES IN THE COLLECTION OF

THE CALIFORNIA ACADEMY OF SCIENCES 69

DRAKE, MEXICAN TINGITID^ 70

DRAKE AND HARRIS, CONCERNING MEXICAN GERRID^ 73

HUNGERFORD, REPORT UPON SOME WATER BUGS

FROM MEXICO 76

HUNGERFORD, A NEW HYDROMETRA FROM NEW

CALEDONIA AND AUSTRALIA 81

USINGER, DORSAL ABDOMINAL SCENT GLANDS IN

NYMPHS OF LYG^ID^ 83

LEECH, A NEW SPECIES OF CCELAMBUS FROM CALIFORNIA 84

MALLIS, THE CALIFORNIA FIRE ANT AND ITS CONTROL 87

ESSIG, THE ORNATE APHID, NEW TO NORTH AMERICA 92

San Francisco, California

1938

THE PAN-PACIFIC ENTOMOLOGIST

Published quarterly in January, April, July and Oetober

by the Paeifie Coast Entomologieal Society in co-operation

with the California Academy of Sciences,

Domestic and foreign subscriptions $2.00 in advance. Sub-

scriptions should be sent to the treasurer, E. R. Leach, De-

partment of Eiitomology, California Academy of Sciences,

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THE PACIFIC COAST ENTOMOLOGICAL SOCIETY

Officers

President

Vice-President

Secretary-Treasurer

Publication Committee

Editor E. P. Van Duzee

Associate Editor E. C. Van Dyke

Treasurer E. R. Leach

Business Manager R. L, Usinger

1938 1939 1940

G. F. Ferris E, G. Linsley C. D. Duncan

F. E. Blaisdell F. X. Williams J. A. Comstock

E, O. Essig, Chairman S. F. Bailey H. H. Keifer

★ ★

Published at the California Academy of Sciences, Golden Gate Park,

San Francisco, California.

Entered as second class matter, February 10, 1925, at the postoffice at

San Francisco, California, under Act of August 24, 1912.

C. D. Duncan

R. L, Usinger

E. G. Linsley

The Pan-Pacific Entomologist

VOL. XIV, No. 2

April, 1938

NOTES ON THE HABITS, DISTRIBUTION, AND STATUS

OF SOME SPECIES OF PLEOCOMA

(Coleoptera, Scarabaeidae)

BY E. GORTON LINSLEY

University of California

The species of Pleocoma constitute one of the most inter-

esting and remarkable genera of North American Scarabaeidae.

The group owes its uniqueness in part to the peculiar habits of

the males, which fly and seek their mates during the early winter

rains, and in part to the slow-moving, subterranean females,

which are flightless, thus greatly inhibiting dispersal and distri-

bution of species.

A survey of the literature of Pleocoma ilidicates that interest

in the group has been more or less cyclical. If published notes

and records are a valid criterion, there have been five main

periods of interest set apart by intervals of ten to fifteen years.

The first period was that of 1856-57, when Dr. J. L. LeConte

made known the type species. A second period occurred be-

tween the years of 1870 and 1874, when three additional articles

appeared. The third and greatest period of activity was that of

1883-1890, when the characters and habits of many of our species

were made known through the medium of eleven published papers

and notes. This period was characterized by a great contro-

versy over the systematic position of the genus, and reached its

climax in the excellent revision of Dr. George Hom\ in 1888.

A revival of interest occurred between 1906 and 1918, when four

papers upon southern California species appeared, three from

the pen of Dr. H. C. Fall and one from Mr. A. C. Davis. Again,

in 1933 and the two years following, seven additional articles

on Pleocoma were published, notable among which were a re-

vision of the genus by Mr. A. C. Davis^ and an article on some

old and new species by Mr. E. R. Leach^ These two papers shed

^Horn, G. H., 1888, Review of the species of Pleocoma, with a discussion

of its systematic position in the Soarabseidse. Trans. Am. Ent. Soc. 15:1-17, figs.

^ Davis, A. C., A revision of the genus PleocoTua. Bull. So. Clalif. Acad.

Sci., 33:123-130; 34:4-36, figs.

® Leach, E. R., 1933. Two old and two new Pleocomas. Pan-Pac. Ent.

9:184-187.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

much new light on the status and distribution of certain species,

but raised a few questions which seem to call for further comment.

Pleocoma fimbriata Le Conte and P. TULARENSis Leach

The status of these two species has been discussed so often

by Mr. Davis and myself, both in prinP’® and in friendly corre-

spondence, that I hesitate to approach the subject again. How-

ever, in his recent revision of the genus, Mr. Davis treats P.

tularensis as a variety of fimbriata. Whatever the status of this

much disputed Pleocoma may really be, it can hardly be consid-

ered a variety of the latter, since the two forms .differ both morpho-

logically and geographically. An examination of the type speci-

men (July, 1937) has confirmed the opinion expressed pre-

viously by the writer* that the true fimbriata is that species which

occurs commonly in the vicinity of Placerville, California (as

has been stated by Horn, Fall, and Leach). In the LeConte type

the pronotum is broadly rounded behind, the antennal club

barely long enough to surpass the base of tbe funicle. In

tularensis the pronotum is subangulate behind and the antennal

club is long enough to reach nearly to the base of the scape. Both

of these characters are evident to the naked eye and are more .dis-

tinctive than the difference in the shape of the basal segments

of the funicle and the sculpturing of the elytra, which also sepa-

rate the two species. A long series of tularensis from Tulare,

Fresno and Madera counties, has been compared with an equally

long series of fimbriata from Placer County and no intergrada-

tion has been observed within these characters, although both

species are variable within well defined limits. Mr. Davis, in

an attempt to determine the status of these two species, pub-

lished a careful set of measurements of the segments of the an-

tennae. His conclusions were unfortunately weakened, however,

by tbe fact that his comparisons were made between Tulare

County examples and specimens from Fresno County (both

obviously tularensis) rather than the true fimbriata from the

north.

Pleocoma edwardsi LeConte and P. ulkei Horn

A very important contribution in Mr. Davis’ recent paper was

* Linsley, E. G., 1935, Pan-Pac. Ent., 11 :13.

® Davis, A, C., 1936, Bull. So. Calif. Acad., ScL, 84:19

APRIL, 1938]

LINSLEY— PLEOCOMA

the straightening out of a part of the confusion which has existed

in the literature between P. staff Shaufuss and P. edwardsi

LeConte. Mr. Davis demonstrated that edwardsi, known to him

only by the type labelled “Calif.”, is a valid species and differs

from staff in the absence of hair from the scutellum, etc. Re-

cently, Mr. Leach® recorded edwardsi from Nevada County, Cali-

fornia, under the name “ulkei Horn.” In ulkei, however, the

fourth segment of the antenna is not lamellate, the pronotum

is widest anterior to the middle, the basal angles both distinct,

the scutellum as long as broad, and the posterior tarsi nearly as

long as the tibiae.

Additional examples of edwardsi before the writer are from

Brownsville, Yuba County, Calif., collected by J. J. DuBois. The

female has apparently never been described. Some of its char-

acters follow:

Female: Oblong oval; dark reddish-brown; clypeus narrowly

emarginate at middle of apex, vertical horn obsolete, represented

by a vague transverse ridge; pronotum a little more than one

and one-half times as broad as long; anterior angles obtusely

rounded, separated by less than one-half the basal width of the

pronotum, lateral margins nearly parallel over basal half; disk

with an indistinct transverse ridge, declivous in front, posterior

angles obtusely angulate; scutellum glabrous, with a few scattered

punctures; elytra widest at apical one-fourth, sutural and gemi-

nate striae deeply and distinctly impressed; pubescence of under-

side golden. Length 31 mm.

Described from an example with the antennae missing. In

general, however, the female of this species may be recognized

by the oblong form and deeply impressed elytral striae.

Pleocoma staff Schaufuss and P. dubitalis Davis

Pleocoma staff was described from “California mer.” and

the specimen in the Horn collection (Philadelphia Academy of

Sciences) labelled staff” is likewise from California. Since this

latter example seems to be an authentic specimen, agreeing with

Schaufuss’ description in the pubescent scutellum, size, color,

etc., there seems little reason to longer doubt that staff is truly

a California species. The writer suspects that it occurs in the

Sierra Nevada Mts., somewhere near the range of edwardsi.

In the collection of Mr. E. R. Leach there is a series of hi-

® Leach, E. R., 1933, Pan-Pac. Ent., 9 :184.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

colorous males from Colton, Clackamas County, Oregon, in the

foothills of the Cascades, that run to staff in Mr. Davis’ key.

Material at hand from Forest Grove, Oregon, in the foothills of

the Coast Ranges, all agrees with the “variety” dubitalis Davis.

It appears, however, that neither of these represents the staff

of Schaufuss, and it would therefore seem best to consider dubi-

talis Davis as a distinct species having two races, one concolorous,

the other bicolorous, both occurring in Oregon. The bicolorous

race may be designated as P. dubitalis leachi Lansley, new sub-

species (Holotype male, and numerous paratypes, in the collec-

tion of Mr, Leach), all from Colton, Oregon, found along the

edges of a clearing in a forest of Pseudotsuga taxifolia. A male

and female from West Linn, Oregon (J. J, DuBois) also repre-

sent this form. The races may be separated as follows:

Male with pronotum dark brown, elytra black or fusco-piceous,

pubescence ochraceous; female with pronotum dark ferrugine-

ous, elytra ferrugineous, oblong, truncate behind, anterior

projection of clypeus scarcely one-tbird as long as broad,

apices acute, median incision shallow, pronotal punctures

shallow and indistinct, pubescence ociiraceoMs.-.-dubitaUs s. str.

Male with pronotum fusco-piceous, elytra fulvous or brown,

pubescence golden yellow; female with pronotum dark brown,

elytra fulvous, oval, broadly rounded behind, anterior projec-

tion of clypeus at least one-half as long as broad, apices

broadly rounded, median incision moderate, pronotal punc-

tures deep and distinct, pubescence golden yellow

dubitalis leachi n. subsp.

Pleocoma minor Linsley, new species

Male: Relatively small, oval, dull, brownish-black, clothed with

golden yellow pubescence. Head moderately sparsely pubescent;

frons coarsely closely punctured; vertical horn conical, pointed,

not emarginate; ocular canthi broadly rounded; clypeus coarsely,

contiguously and! subcontiguously punctured, sides arcuate, apex

triangularly emarginate, apices acutely rounded; antennae pale

reddish, scape subconical, second segment moniliform, broader than

long, third slender, about three and one-half times as long as

greatest width, apex a little wider than base but not as wide as

second, fourth with a short process, five to eleven forming the

club, lamella of fifth segment scarcely one-third as long as that

of sixth. Pronotum nearly twice as wide as long, broadest a little

behind the middle, very feebly declivous in front and without a

APRIL, 1938]

LINSLEY— PLEOCOMA

transverse discal ridge, median longitudinal impression distinct,

apical one-third closely punctured and clothed with short, erect

hairs; surface very finely and obscurely punctured. Scutellum

clothed with golden yellow hairs. Elytra not quite one and one-

half times as long as broad, but little wider behind the middle;

sutural striae feeble, geminate barely evident, interstriae weakly

rugose. Legs slender, tarsi shorter than tibiae, pale reddish.

Ventral surface densely clothed with long, golden yellow pu-

bescence. Length: 18 mm.; breadth 10 mm.

Holotype, male an,d one paratype (collection of Dr. W. J.

Chamberlin) from Hood River, Oregon, October 23, 1930, D. C.

Gillespie collector. The writer is indebted to Mr. A. T. McClay

and Dr. W. J. Chamberlin for the privilege of studying these

specimens.

This species shows some relationship with P. dubitalis Davis,

but differs at once in the distinct and pubescent longitudinal pro-

notal impression and absence of the transverse pronotal ridge,

as well as in the smaller size (18 mm. as compared with 23-29

mm.), dull luster, feeble punctation and striae, and pale reddish

antennae and tarsi. If the type specimens are of average size this

is one of the smallest known species of Pleocoma, being rivalled

only by small examples of P. hirticollis vandykei Linsley.

Pleocoma crinita Linsley, new species

Male: Moderate sized, oval, castaneous, clothed with pale yellow

hair. Head rather densely clothed with erect hairs ; f rons coarsely,

closely punctured; vertical horn conical, pointed at apex; ocular

canthi subquadrate; clypeus prominent, sides slightly arcuate, apex

triangularly emarginate, apices angulate; antennee reddish brown;

scape moderately stout, subconical, second segment moniliform,

about twice as broad as long, third about three and one-half times

as long as basal width, anterior margin obtusely angulate, fourth

with a short process, segments five to eleven forming club, lamella

of fifth segment less than half as long as that of sixth segment.

Pronotum nearly twice as broad as long, widest at the broadly

rounded posterior angles; median longitudinal impresssion dis-

tinct, coarsely and subcontiguously punctured, densely clothed with

long erect yellow hairs; remaining surface shining, moderately

coarsely, irregularly punctured. Scutellum very densely clothed

with long hairs. Elytra together barely longer than broad, sub-

oval; sutural and geminate striae deep, interstriae coarsely punc-

tured. Legs densely fimbriate, reddish brown, the apices and serra-

tions darker; posterior and intermediate tarsi distinctly shorter

than the tibiae; ventral surface densely clothed with hair. Length

20 mm.; breadth 12 mm.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

Holotype male, and one paratype male, from Glenwood, Klick-

itat County, Washington, May 1936, in the collection of Dr. M.

H. Hatch. The writer is indebted to Dr. M. H. Hatch and Mr.

A. T. McClay for the opportunity of studying these examples.

This very distinct species differs at once from all others ex-

cept hirsuta in the dense longitudinal band of erect hairs on the

pronotum, and from all except hoppingi, simi, and badia in the

uniform castaneous color. In Mr. Davis’ key it runs near P.

hirticollis and P. hoppingi, but may be distinguished from both

of these by the shape of the ocular canthi and clypeus, pubescent

scutellum, deeply striate elytra, etc. This is the first Washington

record for a species of Pleocoma.

Pleocoma conjungens Horn

This species was described in 1888 from three males taken

near Santa Cruz, California, and from that year until 1933 it was

not recognized again. In the latter year Mr. Leach recorded

four males from Mokelumne Hill, Calaveras County, California,

which apparently represented conjungens. These examples were

larger than the measurements given by Horn, but otherwise agreed

rather well with the characters enumerated by that author. Since

the Santa Cruz record had remained unverified for nearly fifty

years and many early records of Coleoptera had proven notor-

iously incorrect, it was not unreasonable to suppose that the

Calaveras County specimens were really the Horn species. Re-

cently, however, the writer has examined a male of conjungens

from Waddell Creek, Santa Cruz County, collected on December

12, 1929, by Mr. Fred Blanchi. A female from Santa Cruz,

November 30, 1936, submitted for determination by Mr. J. W.

Tilden, likewise appears to represent this species. It is similar

to hirticollis, but differs in the more deeply cleft clypeal margin,

less coarsely punctured pronotum, and slightly different antennal

structure (fourth segment not angulated internally and the lamella

of the fifth segment shorter).

A second female from the Santa Cruz region (5 miles south

of Carmel, Monterey Co., August 5, 1924, L. S. Slevin collection,

Calif. Acad. Sci.) belongs in another part of the genus near

hehrensi Lee., differing in the proportions of the antennal seg-

APRIL, 1938]

LINSLEY— PLEOCOMA

ments (third segment shorter and more cylindrical, fourth and

fifth moniliform, sixth angulat&d, seventh with a process nearly

as long as that of the eighth). This example apparently repre-

sents an undescrihed species.

Pleocoma blaisdelli Linsley, new species

Male : Large, robust, oval, dark brownish to black. Head mod-

erately coarsely, closely punctured; clypeus reflexed, apex broadly

emarginate, anterior angles acute, surface clothed with coarse,

golden hairs, vertical horn elongate, sides subparallel but narrow-

ing slightly to the apex which is subangularly emarginate; anten-

nae reddish-brown, scape elongate, conical, second segment moni-

liform, not quite as long as broad, third about four times as

long as broad, angulate, fourth with a short lamella, segments five

to eleven forming the club. Pronotum dullish, about twice as

broad as long, widest at base; anterior angles very obtuse, basal

margin sinuate; disk closely punctured, most of the punctures

less than one puncture-width apart except along median line

which is polished, impunctate; lateral margin with a semi-trans-

lucent reddish spot at middle; scutellum polished, punctures

elongate, pit-like. Elytra black, about one-eighth longer than

broad, barely widest at apical one-third; sutural striae shallow,

geminate striae very feeble. Ventral surface rufo-castaneous,

clothed with yellowish-brown pubescence. Femora rufo-castaneous,

tibiae and tarsi reddish-brown, the latter longer than the tibiae.

Length : 27 mm.

Holotype male (No. 4591, Calif. Acad. Sci., Ent.), and two

paratypes, both males, taken at Mokelumne Hill, Calaveras

County, California, in October, by Dr. F. E. Blaisdell.

P. blaisdelli is related to P. conjungens Horn, but is larger

(27-28 mm. as compared with 22-23.5 mm.) and differs in having

the first segment of the funicle angulate, the pronotum dullish,

more closely punctured, with the posterior margin sinuate, and

the scutellum with elongate pits, rather than with shallow punc-

tures. This is the species recorded by Mr. Leach" as conjungens.

Pleocoma hirticollis Schaufuss

Two rather well-marked races of this species exist. One

occurs in the foothills of the Sierra Nevada Mountains, the other

in the region of San Francisco Bay. The males of these two

subspecies may be distinguished as follows:

’’ Leach, E. R., 1933, Pan-Pac. Ent., 9 :185.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

Third segment of antenna angulate, lamella of fourth segment

more than one-half as long as that of fifth, lamella of eighth

segment usually longest; elytra chestnut brown; clypeus sep-

arated from ocular canthi by a distinct notch. 25-27 mm.

Yuba and Nevada Counties, Calif. hirticollis s.str.

Third segment of antenna not angulate, lamella of fourth segment

much less than one-half as long as that of fifth, lamella of

ninth segment usually longest; elytra piceous to black; clypeus

not separated from ocular canthi by a notch. 17-20 mm.

Sonoma and Alameda Counties, Calif

hirticollis vandykei n. subsp.

Holotype male (No. 4592, Calif. Acad. Sci., Ent.) from

Sonoma Co., Calif., Oct. 10 (Van Dyke collection, C.A.S.).

Paratypes: five males, Sonoma Co., Calif. (Van Dyke collec-

tion, C.A.S.) ; one male, Sonoma Co., Calif. (Blaisdell collec-

tion, C.A.S. ) ; one male, Sonoma Co., Calif., (M. Robinson col-

lection) ; and one male, hills back of Oakland, Calif. (C.A.S.

collection) .

Pleocoma behrensi LeConte

As far as is known to the writer, this species occurs only in

the region immediately surrounding San Francisco Bay. An

examination of the specimen upon which Mr. Davis’ based his

Mt. St. Helena, Napa Co., record reveals that it is P. sonomcB^

and the same is probably true of his Sonoma County examples,

although I have not seen all of these. The host plant of P.

behrensi is the chapparal broom, Baccharis pilularis.

Pleocoma carinata Linsley, new species

Male: large, broadly oval, black, clothed with golden yellow

pubescence. Head sparsely clothed with erect hairs; vertical horn

large, stout, conical, coarsely and closely punctured; ocular canthi

broadly rounded, concave, almost impunctate; oblique supra-orbi-

tal Carina prominent; clypeus short, sides feebly sinuate, apex

slightly emarginate, surface coarsely, closely punctured; antennae

brownish, scape subconical, second segment not quite twice as

broad as long, third angulate anteriorly, a little more than twice

as long as basal width, fourth nearly as long as broad, fifth

shorter than fourth, angulate anteriorly, segments seven to eleven

forming club, the tenth longest; lamella of seventh segment less

than one-half as long as that of eighth. Pronotum twice as broad

as long, widest a little behind the middle, posterior angles broadly

rounded; surface distinctly but not coarsely punctured, the punc-

tures mostly from less than one to nearly three puncture-widths

APRIL, 1938]

LINSLEY— PLEOCOMA

apart on disk, nearly contiguous in the groove of the broad anterior

median impression, which is sparsely hairy; lateral impressions

distinct but shallow. Scutellum about as long as broad, moderately

coarsely, closely, but shallowly punctured, sparsely clothed with

coarse, yellow-brown hair. Elytra about one-eighth longer than

broad, surface shining, sparsely and shallowly punctured; sutural

striae distinct toward apex, evanescent toward base; geminate

striae very feeble, indicated over basal two-thirds by shallow

punctures. Legs dark brown; posterior and intermediate tarsi

shorter than tibiae. Ventral surface clothed with golden yellow

hairs. Length: 22mm.; breadth 13 mm.

Holotype male (No. 4593, Calif. Acad. Sci., Ent.) and one

paratype male, in collection of author, taken at the base of Mt.

McLoughlin, near Butte Falls, Jackson Co., Oregon, December

15, 1937, by Mr. C. P. North. The specimens were very kindly

presented to the writer by Mr. D. F. Tillotson.

This species is apparently related to P. simi Davis and P.

shastensis Van Dyke. From the former it differs in the black,

rather than canstaneous, color, the sculpturing of the elytra and

pronotum, the strong supra-orbital carina, and the lamellate

seventh segment of the antennae. From shastensis it may be

distinguished by the shape of the clypeus and ocular canthi, the

distinct antero-median impression of the pronotum, and the

golden, rather than .dark brown, pubescence, etc.

Pleocoma trifoliata Linsley, new species

Female: Narrowly oval, not quite twice as long as broad;

reddish brown. Head coarsely, irregularly punctured, the punc-

tures poorly defined; clypeus broader than long, apical margin

reflexed, feebly sinuate, middle with a small angular notch, surface

clothed with moderately long, erect, golden pubescence; ocular

canthi subtriangular, anterior and posterior margins feeble, equally

arcuate; vertical horn very short, broad, emarginate; antennae

tri-lamellate, second segment broader than long, third subconical,

its width at apex about two thirds its length, segments four and

five wider than long, subangulate, sixth transverse, angulate,

eighth with a short process which is less than one-half as long as

the lamella of the ninth, segments nine to eleven forming the club.

Pronotum about twice as broad as long, widest just behind the

middle, posterior angles obtusely rounded; surface coarsely, mod-

erately closely punctured, punctures of disk tending to become

confluent; pubescence short, scattered, suberect, golden; scutellum

glabrous, with a few shallow punctures at base. Elytra one and

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

one-fourth times as long as broad, widest about middle, geminate

striae very feeble, surface shining, slightly roughened but without

distinct punctures. Ventral surface clothed with moderately long,

dense, golden pubescence. Length 28 mm., breadth 16.5 mm.

Holotype, female, collected at Seward, Alaska, May 1913, by

Mr. J. A. Kusche, and “found dead in root of Abies douglasi

while digging for Cychrus marginatus”. The type is deposited

in the collection of Mr. Mark Robinson, who very kindly sub-

mitted the example to the writer for study.

This interesting species is most similar to P. rickseckeri

Horn, but differs in the narrower form, more elongate elytra

which are less broadened apically, the more coarsely and closely

punctured pronotum with the discal punctures becoming con-

fluent, the absence of the short median impunctate line just an-

terior to middle of disk, etc. In rickseckeri the clypeus is bilobed

with the lobes broadly rounded, the vertical horn is larger, and

the lamella of the eighth antennal segment is more than one-half

as long as that of the ninth, thus producing a quadri-lamellate

rather than a tri-lamellate club.

The discovery of this species in a locality nearly fifteen

hundred miles north of any previously known record for the

genus, immediately raises a question as to the validity of the

data. It is a fact that the late Mr. Kusche collected in Alaska

in 1913, and the other species with which the Pleocoma was

supposed to have been found {^'^Cychrus marginatus'^) is known

to occur at Seward (also in British Columbia, Washington, Ore-

gon) . It is problematical as to what Mr. Kusche meant by

Abies douglasi”, however, since there is no Abies of that name.

Pseudotsuga taxifolia is commonly known as “Douglas Fir”,

and if this is the plant which he had in mind, it does not occur

north of British Columbia, although there are other trees growing

at Seward which might possibly have been mistaken for it. In

any event, the species which Mr. Kusche collected appears to be

distinct from any which have been described and, until the

locality can be either verified or corrected, it seems best to accept

it at its face value. The first record of Pleocoma from Utah

was viewed with similar skepticism but Mr. Davis has recently

described a second species from that State.

(To be continued)

APRIL, 1938]

LING— CADDIS FLIES

A FEW NEW CADDIS FLIES IN THE COLLECTION OF

THE CALIFORNIA ACADEMY OF SCIENCES ^

BY SHAO-WIN LING

Rhyacophila betteni Ling, n. sp.

Head brownish with yellowish hairs; vertex yellowish brown,

warts prominent; face yellow with golden hairs. Antennae stout,

covered with short brownish hairs, brownish at base, darker at

middle and paler toward tip. Maxillary palpi long and slender,

grayish black with long black hairs at basal segments. Prothorax

light above, with very prominent warts bearing long brownish

yellow hairs. Meso- and metathorax dark brown above, pale at

sides. Legs all uniformly brownish yellow; spurs slightly darker.

Fore wings narrow, postapical margin very oblique; brownish

in color with numerous yellowish spots, especially marked on mar-

gins, one big distinct spot near the base of cell R^; pubescence

blackish and golden mixed; stigma distinct, dark brown, with a

few golden spots; hyaline spot on the cross-vein m-cu distinct.

Veins brown with black microsetae; cell extends slightly

farther back toward base of wing than cell Rg. Hind wings

brownish, lighter at base; stigma distinct, darker in color. Abdo-

men black above, light yellowish on sides and beneath. Genitalia

of male light brown, paler toward tip; clasper very long; the

distal segment narrowing down suddenly near the middle, very

slender and finger-shaped toward tip.

Length of fore wing, male 13.5 mm., of hind wings 12 mm.

Type No. 4620, Calif. Acad. Sci., Ent. Type locality Mt.

Tamalpais, Marin Co., California, February 24, 1907 (F. X.

Williams) .

^ In 1932 the caddis fiies in the collection of the California

Academy of Sciences were sent to Prof. James G. Needham of

Cornell University for determination. These were turned over

by Prof. Needham to Mr. Shao-win Ling, a student at Cornell

University, for study and a report on them has been received

by the Academy. This report was too extended for immediate

publication in the Proceedings of the Academy and it has been

thought best to publish separately in the Pan-Pacific Entomologist

the descriptions of those species the types of which are now in

the collection of the Academy.

Unfortunately the figures of details of these new species are

made up in plates with unrelated material and will have to be

published later in connection with the general report on the

Academy material. — Editor,

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

Rhyacophila californica Ling, n. sp.

General appearance similar to R. bipartita. Head dark brown;

compound eyes black, ocelli white; antennee grayish brown, paler

at base and darker toward tip, slightly annulated with dark gray

at middle of each segment. Vertex with prominent warts, hairs

either black or yellowish; face brown with dark-brown hairs;

maxillary palpi dark, labial palpi paler, basal segment yellowish.

Prothorax light yellowish gray with brownish hairs; meso- and

metathorax dark brown above, light brown on sides and beneath.

Legs yellowish brown; lighter at base, darker toward tip. Spurs

normal, grayish black. Fore wings quite slender, postapical mar-

gin oblique; uniformly grayish brown in color with yellowish and

dark spots especially along the margin; stigma not distinct. Hind

wing hyaline, paler near base; stigma distinct. Abdomen black

above and grayish brow'n beneath. Genitalia grayish brown;

dorsal piece triangular when viewed from side, with a small distal

piece; clasper moderate in size, first segment small at base and

wider at tip, second almost straight and truncate at tip; penis

slender with two pairs of spines at tip, one pair pointing straight

backward and the other pointing downward and forward on each

side.

Length of wings of male: fore wing 12 mm., hind wing 10 mm.

Type No. 4621, Calif. Acad. Sci., Ent. Type locality Lague-

nitas, Marin Co., California, Feb. 23, 1927 (H. H. Keifer).

Rhyacophila complicata Ling, n. sp.

Head brownish; vertex slightly paler with silvery and brownish

hairs; ocelli light brown; antennee dark brown, slightly annulated

with black at end of each segment; face brownish; maxillary palpi

slender, brownish, with long brownish hairs at basal segments;

labial palpi brownish, slightly club-shaped at end. Thorax dark

brown above, lighter at sides and beneath; legs pale brown, tarsi

darker, coxae silvery and brownish in color. Fore wing pale brown

without yellowish spots or markings; stigma not distinct; veins

pale; cell reaching slightly farther backward to the base of

wing than cell R 2 ; cell Mg slightly longer than pedicel. Hind wing

paler, stigma pale. Genitalia brownish, complicated, distal joint

of clasper bifid at tip.

Length of wings of male: fore wing 10 mm., hind wing 9 mm.

Type No. 4622, Calif. Acad. Sci., Ent. Type locality Ore-

gon, October 12.

APRIL, 1938]

LING— CADDIS FLIES

Rhyacophila doddsi Ling, n. sp.

Small in size and pale in color. Head black with dark yel-

lowish hairs; antennee slender, brownish in color; face black;

maxillary and labial palpi yellowish. Prothorax brownish, warts

and hairs pale golden. Meso- and metathorax dark browP; with

brownish hairs ; legs brownish, coxae darkest, tarsi lightest. Spurs

brown. Fore wings moderately broad; uniformly light brownish

in color without spots or markings; stigma distinct; veins pale;

cell R 2 cell reaching back about to the same level; cell Mg

about as long as pedicel. Hind wings pale; stigma distinct; veins

pale. Genitalia prominent; dorsal piece small, distinctly bifid;

basal segment of clasper long and thick, distal segment about one-

third as large, with a sharp incision at anterior margin; penis

simple and slender; accessory appendage fused at middle to form

a single piece, club-shaped and provided with dense short hairs

at end.

Type No. 4623, Calif. Acad. Sci., Ent. Type locality Yellow-

stone Park, July 21; also from Colorado (G. S. Dodds).

Rhyacophila novarotunda Ling, n. sp.

Length of wings of male: fore wing 9 mm., hind wing 7.5 mm.

General appearance very similar to R. rotunda. Head black,

with golden hairs. Antennae slender, black in color, slightly annu-

lated with pale at base of each segment, especially those near

the base. Maxillary and labial palpi black. Thorax black, pro-

vided with golden and brownish hairs. Coxae dark, with short

golden hairs; femora black at base, lighter toward tip; tarsi

light, darker at tip of each joint; spurs normal, grayish yellow.

Wings brownish with numerous yellowish dots, especially distinct

near margins; fore wings with cell Rg slightly farther back than

cell R^; cell Mg slightly shorter than pedicel. Hind wijngs pale

at anal area; stigma distinct. Abdomen black. The genitalia

differ from those of R. rotunda in that the dorsal piece is more

slender and longer, that the distal segment of the clasper is more

distinctly broadened and concave at tip, and that the accessory

appendages of the penis are broader toward tip and provided with

a dark spot.

■Length of wings of male: fore wing 10 mm., hind wing 9 mm.

Type No. 4624, Calif. Acad. Sci., Ent. Type locality Home-

stead Inn, Mt. Hood, Oregon, July 6, 1927 (Van Dyke). Another

specimen is from Mt. Adams, Washington, July 30, 1925 (Van

Dyke) .

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

Rhyacophila oregonensis ling, n. sp.

Pale yellowish in color. Head light brown; vertex brown,

warts and hairs yellowish; cheeks brownish; face pale; maxillary

and labial palpi light yellowish; antennae slender, brownish, annu-

lated with pale yellow between joints. Compound eyes black;

ocelli brownish. Prothorax light brown, with very distinct warts.

Meso- and metathorax brownish above, light brown on sides and

beneath ; legs light brown at base, lighter toward tip, with a dark

ring at each tarsal joint; spurs brownish, inner spur of hind tibia

slightly shorter than the outer one and bifid at tip. Fore wings

broad, light brown in color and provided with numerous irregular

brownish spots, especially along the margins; stigma pale with-

out any markings; veins brownish; cell reaching back a little

farther than cell Rg; cell Mg longer than pedicel; median cell

(1st M 2 ) present though the crossvein may be very faint. Hind

wings with tips colored like the fore wings, anal area pale; stigma

lighter in color than the wings; posterior margin incised. Abdo-

men light brown and paler on sides and beneath. Genitalia pale;

dorsal piece greatly reduced in size, bifid at tip and curved down-

ward like a hook when viewed from side; penis and its sheath

greatly modified.

Length of wings of male: fore wings 12.5 mm., hind wing

11 mm.

Type No. 4625, Calif. Acad. Sci., Ent. Type locality Cor-

vallis, Oregon. Another male specimen was collected at Beaver

Creek, Medicine Lake, Canada, September 4.

Glossosoma oregonense Ling, n. sp.

General appearance similar to G. alascense. Head blackish

brown; vertex dark, warts with white hairs. Antennae shorter

than wing, brownish in color, basal segment thick and dark brown;

face brownish with whitish scale hairs; maxillary palpi brownish,

labial palpi very small. Thorax dark brown; legs uniformly

yellowish; spurs long and slender, dark brown in color. Wings

light brownish, thickly covered with brownish and silvery short

hairs; venation like other species. Abdomen blackish above,

grayish on sides and below.

Length of wings of male: fore wings 7.5 mm., hind wings

6.5 mm.

Type No. 4626, Calif. Acad. Sci., Ent. Type locality Crater

Lake, Oregon (Van Dyke), July 18, 1922. Others are from Steen

Mts., Oregon, June 25, 1922 (E. C. Van Dyke) ; Corvallis, Ore-

gon, June 11, 1925 (E. P. Van Duzee).

APRIL, 1938]

LING— CADDIS FLIES

Philopotamus novusamericanus Ling, n. sp.

General appearance similar to P. americanus. Head black;

warts slightly lighter, hairs golden. Antennee brownish, slightly

darker at base of each joint. Palpi dark brown, second segment

thick, third segment one and a half times as long as the fourth,

fifth almost as long as third and fourth combined. Legs brownish,

spurs with a black line on edge. Wings brownish, with many

irregular yellowish spots; venation as usual; cell Rg of hind wing

absent. Abdomen grayish. Genitalia brownish; dorsal piece

small; superior appendage longer than wide when fully extended;

clasper long, basal segment very thick, second small, tapering at

end and only half as long as the first.

Length of wings of male : fore wing 10 mm., hind wing 8.5 mm.

Type No. 4627, Calif. Acad. Sci., Ent. Type locality Lagu-

nitas, Marin Co., California, March 23, 1927 (H. H. Keifer).

Philopotamus oregonensis Ling, n. sp.

A small species, beautifully colored with yellow. Head black,

vertex with prominent brownish warts; hairs white, slightly

golden. Antennae stout, brownish, slightly annulated with black.

Eyes black with golden markings. Palpi brownish. Thorax

brown; legs paler and grayish toward tip; spurs stout and

longer. Fore wing broad, brownish, with numerous yellowish and

whitish irregular spots, especially on the costal margin; pubes-

cence dense but short. Veins brown, venation like that of P.

sequalis. Hind wing broad, cell Rg present. Genitalia: dorsal

piece represented by two slender projections; superior appendage

long, broad at middle and pointed at both ends; clasper with the

basal and distal segments subequal in length, distal joint rounded

at tip.

Wings of male: fore wing 8 mm., hind wing 7 mm.

Type No. 4628, Calif. Acad. Sci., Ent. Type locality Alsea

Mount, Oregon, June 2, 1929 (H. A. Scullen) .

Dolophilus arizonensis Ling, n. sp.

Head brownish, more or less flattened. Eyes normal, ocelli

small. Antennae stout, brownish, slightly annulated with yellow

at tip of each segment. Palpi brownish, first and second segments

subequal in size, third segment twice as long as fourth, fifth

slightly longer than third. Legs pale, spurs 2-4-4. Wings pale

brown; venation as usual. Abdomen brownish. Genitalia pale

yellowish; dorsal piece broad at base, narrow at middle, and club-

shaped at tip; superior appendage small, almost triangular in

shape, clasper short but stout, yellowish in color, with black mark-

ings at end of each segment; basal segment thick, slightly longer

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

than broad, distal joints shorter than the first, tapering gradually

toward tip.

Length of wings of male: fore wing 8.5 mm., hind wing 5.5 mm.

Type No. 4629, Calif. Acad. Sci., Ent. Type locality Arizona.

Dolophilus cruzensis Ling, n. sp.

Similar to D. arizonensis in general form and coloration of

head, antennae, palpi and wings, but it can easily be distinguished

by the characters of genitalia. Genitalia dull brown in color;

dorsal piece broad at base and spear-shaped at tip; superior

appendage slender, almost as long as the dorsal piece; claspers

short. When fully extended the basal segment is only slightly

shorter than the second. (In dried specimens the basal segment

seems to be much shorter.) The second segment twice as long

as broad and only slightly narrower toward tip.

Length of wings of male: fore wing 6 mm., hind wing 5^ mm.

Type No. 4630, Calif. Acad. Sci., Ent. Type locality Felton,

St. Cruz County, California, May 15-19, 1907 (J. C. Bradley),

many specimens.

Chimarrha idahoensis Ling, n. sp.

General appearance like that of C. aterrima. Palpi long;

fifth segment slightly longer than fourth, third almost as long

as second which is about as long as fourth and fifth together,

basal segment very short. Wings brownish, venation as usual.

The ventral process on the last abdominal segment with only the

rudiment left (hardly visible) . Clasper short and broad, only

slightly incised on its posterior margin.

Length of wings of male: fore wing 6 mm., hind wing 5.5 mm.

Type No. 4631, Calif. Acad. Sci., Ent. Type locality Lewis-

ton, Idaho, July 21, 1925 (C. L. Fox), one male.

Arctopsyche brevipennis Ling, n. sp.

General appearance similar to A. grandis. Head brownish;

vertex with yellowish hairs; face brownish, almost bare. Eyes

large, black, and with fine yellowish pubescence. Antennae slender,

brownish, annulated with black 'at end of each segment. Pro-

thorax with yellowish gray hairs; meso- and metathorax dark

brown with golden hairs at the middle (the depressed area).

Fore wings of male pale yellowish, with irregular black spots.

Venation same as A. grandis. Legs yellowish brown. Abdomen

dark above and brown on sides. Genitalia much simpler than in

APRIL, 1938]

LING— CADDIS FLIES

the other species ; dorsal piece narrow and long and slightly

incised at tip; claspers long and slender, pointed at end.

Length of wings of male: fore wing 15.5 mm., hind wing 14 mm.

Type No. 4632, Calif. Acad. Sci., Ent. Type locality Bubbs

Creek, Kings River Canyon, California, July 8, 1912, altitude

9,700 ft. (E. C. Van Dyke) ; also from Rea Lake, Fresno Co.,

California, July 20, 1910, altitude 10,500 ft. (E. C. Van Dyke).

Arctopsyche calif ornica Ling, n. sp.

General appearance similar to A. grandis. Head brownish;

vertex covered with long dense golden hairs; face brown with

dark hairs. Antennee brownish, annulate with black and yellow

at tips of joints. Palpi long, brownish at base, paler toward tip;

fourth segment longer than third, fifth almost as long as the

other four together. Prothorax with long black hairs at the

dorsal warts; meso- and metathorax dark brown, paler at median

line. Legs yellowish brown, darker toward tip; spurs long, inner

apical spur of front leg longer than the outer; outer apical and

subapical spurs of middle leg longer than the inner. Abdomen

fuscous. Genitalia brownish; very complicated. Fore wings

broad, brownish with numerous black and yellowish irregular

spots, a conspicuous black band running along the anastomosis;

venation similar to that of A. grandis.

Length of wings of male: fore wing 12.5 mm., hind wing 12 mm.

Type No. 4633, Calif. Acad. Sci., Ent. Type locality

McCloud River, Shasta Co., California, July 1, 1907 (F. X.

Williams) .

Arctopsyche oregonensis Ling, n. sp.

Form much smaller than the other species. Head black, ver-

tex black with five small warts in front bearing yellowish hairs,

and one pair of much larger ones at the hind margin, bearing

black hairs with yellowish tips. Palpi brownish. Prothorax

brownish. Meso- and metathorax black. Fore wings slender and

transparent, with many yellowish and black spots irregularly

scattered. Hind wings broad, hyaline, and not so transparent

as the fore wing. Genitalia with the dorsal piece bifid, serrated

above when viewed from the side; claspers short with a finger-

like projection at the lower margin.

Length of wings of male : fore wing 11 mm., hind wing 10 mm.

Type No. 4634, Calif. Acad .Sci., Ent. Type locality Wal-

lowa Lake, Oregon, July 27, 1929 (H. A. Scullen).

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

Diplectrona oaklandensis Ling, n. sp.

General appearance similar to D. calif ornica Banks but much

paler in color. Genitalia brownish; dorsal piece longer and more

deeply notched at tip than in D. calif ornica] claspers slender,

second segment very small, almost rounded; penis spoon-shaped,

bifid, widened and with a small spine-like process at tip; the

accessory appendages two in number, black and simple.

Length of wing: fore wing 7.5 mm., hind wing 6.5 mm.

Type No. 4635, Calif. Acad. Sci., Ent. Type locality Oak-

land, California, April 17, 1915 (E. P. Van Duzee), one male.

Hydropsychodes arizonensis Ling, n. sp.

Head dark brown; vertex and face dark with black and white

hair. Antennae brownish, annulate with yellow, darker toward

tip, somewhat serrate in appearance. Palpi dark. Thorax

brownish; legs pale; spurs 2-4-4. Wings pale, with very short

and fine white and black hairs; venation as usual. Genitalia pale;

tip of dorsal piece with a finger-like projection on either side,

directed inward, pointing toward each other; basal segment of

clasper stout, second very small, almost triangular in shape;

penis almost like that of H. gracilis except that the lobes are

not so broad.

Length of wings: fore wing 7 mm., hind wing 6 mm.

Type No. 4636, Calif. Acad. Sci., Ent. Type locality Chiri-

cahua Mts., Arizona, August 25, 1927 ( J. A. Kusche) .

Astenophylax needhami Ling, n. sp.

Head brownish; vertex black at the center (almost like a

black spot), two pairs of warts, the smaller pair present between

the ocelli and base of antennae, the larger pair lying transversely

along the hind margin of vertex, hairs long and brownish; front

light brownish with hairs of the same color. Antennae shorter

than wing, basal segment pale, dark at middle and paler again

toward tip. Palpi light brownish. Prothorax light brown, warts

pale. Mesothorax dark brown above, with oval whitish area at

scutellum. Legs light brown, ventral surface of tibiae and tarsi

armed with two rows of stout spines, last tarsal joint of the

hind leg with two pairs of spines; spurs 1-3-4. Fore wings broad,

light brown, scantily pubescent, stigma not well defined, veins

brown. Hind wings paler, veins pale, a cross-vein present betvTeen

veins Sc. and near margin. Genitalia dark, dorsal piece with

the edges turned upward forming a big depression between them;

clasper broad at base, small and almost pointed at tip; penis

simple with a pair of thread-like appendages.

Length of fore wing: 25 mm.

APRIL, 1938]

LING— CADDIS FLIES

Type No. 4637, Calif. Acad. Sci., Ent. Type locality

“Sutley”, California (Mrs. S. T. Yearns, presented by P. R.

Needham) . This species is named in honor of Dr. P. R.

Needham.

Colpotaulius tehamia Ling, n. sp.

General appearance similar to Anaholina spinosa but they can

easily be separated by the fact that the tibiae of the front legs of

this species have very few spines and the first tarsal segment is

only half as long as the second. The dorsal piece of the male

genitalia is larger than that of A. spinosa.

Length of fore wing: 11 mm.

Type No. 4638, Calif. Acad. Sci., Ent. Type locality Tehama

Co., California, Oct. 30, 1920 (E. C. Van Dyke).

Anabolia oslari Ling, n. sp.

Head dark brown, almost triangular in shape when viewed

from side; vertex with very few long hairs. Antennae brownish,

basal segment about as long as the next three segments together.

Thorax and abdomen brownish. Legs brownish, stout, with a

black spot on the inner surface of trochanter of each leg. Last

tarsal segment of the hind leg with one pair of black spines.

Genitalia dark brown; dorsal piece well chitinized and black in

color at tip; clasper smaller than superior appendages; penis

simple; accessory appendages simple.

Length of fore wing: 12 mm.

Type No. 4639, Calif. Acad. Sci., Ent. Type locality Glen-

wood Springs, Colorado (Oslar).

Hesperophylax minutus Ling, n. sp.

This is a very small species. Head hairy; vertex dark brown

covered with short white hairs, with only one pair of warts

(posterior) ; antennae dark brown, about as long as wing; basal

segment with a longitudinal yellowish stripe (without any strong

hairs in the stripe) on the ventral surface; face deep brown, a

pair of transverse white stripes present below the base of antennae.

Prothorax densely covered with long pale yellowish hairs, mostly

directed backward, meso- and metathorax black above and

brownish at sides and below. Legs stout, brownish. Wings

resemble those of H. designatus. Genitalia dark, almost identical

with those of H. designatus.

Length of wings of male: fore wing 9 mm., hind wing 8.5 mm.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO, 2

Type No. 4640, Calif, Acad. Sci,, Ent. Type locality Steen

Mts., Harney Co., Oregon, June 25, 1922 (E. C. Van Dyke).

Chilostigina atlinensis Ling, n. sp.

Head black; vertex with only the usual dorsal posterior warts;

antennae shorter than wings; basal segment dark, the others

reddish brown with lighter area at tip of each joint. Face and

palpi dark brown. Prothorax black at sides, dorsal warts dis-

tinct, reddish and bearing numerous whitish hairs. Mesothorax

light brownish above (excepting the anterior median portion)

and dark at sides. Metathorax dark brown. Legs slender and

long; coxae black; femora, tibiae, and tarsi pale. Spurs 1-2-2.

Last tarsal segment without any spine. Fore wing smoky, stigma

distinct, veins pale, brownish marking faint.

Length of fore wing: 16 mm.

Type No. 4641, Calif. Acad. Sci., Ent. Type locality Atlin,

British Columbia, September 5, 1929 (George Swarth).

Clistoronia bifida Ling, n. sp.

General appearance very similar to C. vastus. Head brownish;

vertex with a tuft of white hairs between the bases of antennae;

face and palpi brownish, clothed with light brown hairs. Dorsal

warts of prothorax densely clothed with strong, whitish, and

black setae. Meso- and metathorax brown. Wings very similar

to those of C. vastus', venation as usual. Legs light broWn; inner

surface of front femora ciliated; tibiae with dark marking at

middle and tip; tarsi darkened at tip of each segment; last tarsal

segment of hind leg with one pair of black spines. Spurs 1-3-4.

Genitalia very characteristic, dorsal piece distinctly bifid at tip.

Length of fore wing: 19 mm.

Type No. 4642, Calif. Acad. Sci., Ent. Type locality Cor-

vallis, Oregon (C. A. Starder).

Neophylax pulchellus Ling, n. sp.

Head deep brown; vertex with tuft of black and white hairs

between the bases of antennae; face and palpi brown. Thorax

brown. Legs brownish; spurs: male, 1-3-3, female, 1-4-4; inner

apical spur of the hind legs of the male greatly modified, some-

what leaf -like. Fore wings brownish, beautifully marked with

deep brown and yellowish spots, clothed with yellowish and whitish

hairs, especially toward apex; stigma very distinct, densely

pubescent; veins deep brown; vein strongly arched near tip;

discal cell four times as long as its pedicel; post-apical margin

strongly incised. Hind wing paler; venation somewhat reduced

in the male. Genitalia hard to make out.

APRIL, 1938]

LING— CADDIS FLIES

Length of wings: male, fore wings 13 mm., hind wings 11 mm.;

female, fore wing 17 mm., hind wing 15 mm.

Type No. 4643, Calif. Acad. Sci., Ent. Type locality Oak-

land, California, April 12, 1908 (E. C. Van Dyke).

Oligoplectrum arizonicum Ling, n. sp.

Head dark brownish. Antennae about as long as wing, basal

segment about as long as the head. Maxillary palpi 3-segmented;

basal segment about twice as long as broad, second segment twice

as long as the first and subequal in length with the third seg-

ment. Thorax dark brown; legs brownish, spurs 2-2-2. Wings

brownish; fore wing densely covered with hairs.

Length of wings: fore wing 5 mm., hind wing 3.5 mm.

Type No. 4644, Calif. Acad. Sci., Ent. Type locality Ari-

zona, August 18.

Oligoplectrum calif ornicum Ling, n. sp.

Head brownish, vertex with two pairs of warts lying trans-

versely between the eyes, front pair just behind the base of

antennae. Antennae short, stout, brownish in color; basal seg-

ment slightly shorter than head. Maxillary palpi 3-segmented;

first segment very short, second three times as long as the third

which is about twice as long as broad. Thorax brownish; legs

paler; spurs 2-2-2. Wings brownish, densely covered with hairs.

Length of wings : fore wing 9 mm., hind wing 6.5 mm.

Type No. 4645, Calif. Acad. Sci., Ent. Type locality Yosem-

ite Valley, California, July 5, 1927 (E. C. Van Dyke).

Hibernation of the Cerambycid Plectrura

spiNicAUDA Mann.

In a previous number (Pan-Pac. Ent., 12:119) Mr. E. G.

Linsley recorded that Ipochus fasciatus Lee. hibernates in the

adult stage in Southern California. It may be of interest to

note that the writer has found adults of another flightless Ceram-

bycid, Plectrura spinicauda Mann., hibernating on the campus

of British Columbia at Vancouver. The beetles were fairly com-

mon throughout the winter (November to March) in crevices

of the rough bark of living Thuja plicata, and also under the

loosened bark of dead or injured Alnus rubra . — Hugh B. Leech,

Univ. of Calif., Berkeley.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

MEXICAN TINGITID^ (HEMIPTERA)

BY CARL J. DRAKE

Iowa State College, Ames, Iowa

Through the kindness of Mr. R. L, Usinger, the writer has

received a small collection of Mexican Tingitidae for study. This

collection of thirty-three specimens contains eight species, three

of which are described below as new. The types of the new species

are in the type collection of the California Academy of Sciences.

The specimens were all collected by H. E, Hinton and R. L.

Usinger either in the Federal District (Mexico City) or at vari-

ous localities in the District of Temascaltepec, all in the State

of Mexico.

Teleonemia nigrina Champion

Real de Arriba, Temascaltepec, 1 specimen, July 14, 1933.

Dichocysta pictipes Champion

Tejupilco, Temascaltepec, 4 specimens, June 13, 22, and 29,

1933.

CoRYTHUCHA MORRILL! Osborn and Drake

Tejupilco, Temascaltepec, 1 specimen, June 17, 1933; and

Mexico City, 1 specimen, July 18, 1933.

CORYTHUCHA DECEPTA Drake

Mexico City, July 19, 1933, 2 specimens; Real de Arriba,

Temascaltepec, 12 specimens, July 13 and 14, 1933, 6000 to

9000 feet, on Alnus acuminata', village of Temascaltepec, July

11, 1933; and Bejucos, Temascaltepec, July 4, 1933.

Atheas nigricornis Champion

Tejupilco, Temascaltepec, 1 specimen, June 27, 1933; and

Real de Arriba, Temascaltepec, 4 specimens, on Pine, June 10,

1933.

Atheas mirabilis Drake, sp. nov.

Head black, the antenniferous processes black, stout, pointed,

directed slightly antero-laterally. Antennge black, moderately

stout; segment I one and one-half times as long as II; III two

and one-half times as long as IV. Pronotum strongly convex.

APRIL, 1938]

DRAKE— TINGITID^

coarsely pitted, black, the paranota, carinae, collar and triangular

process testaceous; carinae sharply raised, indistinctly areolate,

the lateral carinae slightly bowed inward in front; collar slightly

raised, reticulate, truncate in front; paranota moderately broad,

biseriate in front, uniseriate opposite humeri, the areolae circular

in form; posterior process areolate, costal area testaceous, rather

broad, mostly biseriate, triseriate in widest part; subcostal area

infuscate, biseriate; discoidal infuscate, very broad, long, extend-

ing considerably beyond middle of elytra, seven areolae deep in

widest part, the outer margin curved; sutural area infuscate, the

apical fourth testaceous. Body beneath black. Legs yellowish

brown, the tarsi dark.

Length, 2.82 mm.; width, 1.20 mm.

Holotype (male), No. 4566, C.A.S. Ent. and allotype (female)

Temascaltepec, Mexico, July 11, 1933. Resembling very closely

A, nigricornis Champion but readily separated from it by its

larger size, shorter and slightly stouter antennae, differently

colored elytra, wider costal and larger discoidal areas.

Leptopharsa hintoni Drake, sp. nov.

Small, elongate. Pronotum convex, black, pitted, the posterior

process reticulate, testaceous; carinae testaceous, foliaceous, uni-

seriate, the areolae moderately large, the lateral carinae constricted

beyond the disc; paranota rather narrow, reflexed, biseriate, the

outer margin nearly straight, the areolae rather large and hyaline,

the nervures yellowish brown. Hood moderately large, inflated,

slightly produced forward in front, testaceous, some of the veinlets

brown.

Elytra constricted beyond middle, testaceous, the nervelets con-

siderably embrowned; costal area uniseriate (type), biseriate in

widest part (allotype), the areolae rather large; subcostal area

triseriate in widest part; discoidal area not reaching middle of

elytra, bounded by a raised nervure, with a dark fuscous spot

near apex (black on outer boundary) , widest beyond middle, there

four areolae deep; sutural area becoming more widely reticulate

distally, the nervelets considerably embrowned, some of the areolae

clouded with fuscous. Head black, with five very long, stout, sharp,

brownish spines, the front pair shorter; antennae very long, testa-

ceous; segment I brown, much stouter and two times as long as

II; III very long, four times as long as IV, the latter mostly

black. Rostral channel wide; laminae foliaceous, testaceous;

rostrum brown, dark at tip, extending beyond middle of meso-

sternum. Body beneath black.

Length, 2.80 mm.; width, .72 mm.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

Holotype (male) No. 4567, C.A.S., Ent., and allotype

(female), Tejupilco, Temascaltepec, June 24, 1933. Allied to

L. partita (Champ.) but readily separated from it by shorter

first antennal segment, longer spines on head and narrower

costal area.

Leptopharsa usingeri Drake, sp. nov.

Hood rather large, inflated, globose behind, slightly produced

in front, testaceous, the veinlets considerably embrowned. Pro-

notum convex, black, the carinae foliaceous, testaceous, each com-

posed of one row of rather large areolae. Paranota testaceous,

broad, reflexed, mostly triseriate, the areolae rather large. Tri-

angular projection testaceous, reticulate. Head black; median and

hind spines long, slender, testaceous, porrect; front spines con-

colorous, much shorter. Antennae long, slender, testaceous; seg-

ment I brown, very much stouter and nearly three times as long

as II, the latter slender; III very long, four and one-half times

as long as IV, the latter mostly black. Rostral laminae strongly

foliaceous, testaceous, widely separated; rostrum barely reaching

meso-metasternal suture. Bucculae broad, testaceous, closed in

front.

Elytra rather broad, faintly constricted beyond middle, testa-

ceous, parts of some veinlets embrowned; costal area broad,

mostly triseriate, quadriseriate in widest part, the areolae large;

subcostal area mostly triseriate; discoidal area not reaching middle

of elytra, widest beyond middle, subcostal boundary more strongly

raised than discoidal, four areolae deep in widest part; sutural

area widely reticulate. Legs slender testaceous.

Length, 3.80 mm.; width, 1.62 mm.

Holotype (female) No. 4568, C.A.S., Ent., and two para-

types (females), the holotype and one paratype, Temascaltepec,

July 11, 1933, the other paratype, Tejupilco, Temascaltepec,

June 23, 1933. This species differs from L. prcestantis (Drake)

in having much smaller hood, longer paranota, much longer

carinae, and much less foliaceous median carina.

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APRIL, 1938]

DRAKE AND HARRIS— GERRID^

CONCERNING MEXICAN GERRID^ (HEMIPTERA)

BY C. J. DRAKE AND H. M. HARRIS

This paper contains the description of two new species of

the genus Gerris Fahr. and notes on two other species of Gerrids

and five species of Halohatinids. All specimens, save those of

G. firma, n. sp., were collected hy R. L. Usinger and the types

are deposited in the California Academy of Sciences.

Gerris ampla D. & H., n. sp.

Very large, robust, brownish black, densely clothed with very

short golden pile. Antennae brown, the apical portion of II, all

of III and IV brownish black; segment I distinctly longer than

II and III conjoined, the apical three subequal in length. Pro-

notum impressed along the median line in front; there with a

short, flavous, longitudinal stripe; the posterior lobe with a rather

distinct median carina.

Male: Last abdominal segment above concavely emarginate,

the connexiva terminating in very short stout spines. Apical seg-

ment of venter not quite as long as two preceding, distinctly im-

pressed in front; hind margin strongly raised, doubly emarginate;

first emargination broad, the second wide and very deep with edge

clothed with fine pale hairs. First genital segment with a promi-

nent longitudinal keel.

Female: Similar in color to male. Terminal connexival spine

shorter and much stouter than in remigis.

Length, 17.00 mm.; width, 4.00 mm.

Holotype, apterous male. No. 4569, C.A.S. Ent. ; allotype,

apterous female. No. 4570, C.A.S. Ent.; and nineteen paratypes,

apterous and winged, Real de Arriba, Temascaltepec, Mexico,

May 25 and June 7, 1935.

In the winged form the pronotum is more tumid than in the

apterous and the veins of hemelytra are very prominent.

The short connexival spines and the very differently formed

terminal ventral segment of male, together with the large size

and long first antennal segment, separate the species at once from

its nearest ally, G. remigis Say.

Gerris firma D. & H., n. sp.

Short, moderately robust. Segment I of antennae slightly

shorter than II and III conjoined; III equal to II; IV one-third

longer than II. Pronotum long, covering metanotum, black,

clothed with very short golden hairs, without longitudinal stripes

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

on the sides in front, the anterior lobe with a median yellowish

brown stripe. Sides of thorax with a silvery sheen. Connexiva

margined with yellowish brown, not produced behind.

Male: Anterior femora short, stout, unarmed, not curved.

Venter fuscous black, with a median yellowish stripe; last seg-

ment nearly as long as the preceding two, impressed behind and

broadly margined with yellow, the second notch deep and very

wide. First genital beneath deeply transversely impressed on the

sides, with,' a short median ridge, roundly produced behind at the

middle; above long, black, margined with broAvn. Omphalium not

prominent.

Length, 5.30 mm.; width, 1.50 mm.

Female : Connexiva very broad, margined with brown, the apex

with a few long hairs, truncate, not produced.

Length, 7.00 mm.; width, 2.00 mm.

Holotype, male; allotype, female; and paratypes, male and

female; all apterous, Mexico City, Mexico, April, 1910, collec-

tion of authors.

This species in some respects seems intermediate between the

genera Gerris Fahr. and Limnogonus Stal. In the front legs the

first tarsal segment is noticeably shorter than the second, but

the body is only feebly shiny and the body clothing and genital

characters are typically Gerris in nature.

Gerris flavolineatus Champion

1898. Gerris flavolineatus Champion, Biol. Centr.-Amer., Ehynch.

11:149, PI. IX, Figs. 13-15.

1934. Gerris flavolineatus Drake and Harris, Ann. Carnegie Mus.,

XXIII: 197, PI. XXIV, Pig. c.

Tejupilco, Temascaltepec, Mexico, June 18 and 24, 1933;

Real de Arriba, Temascaltepec, June 7, 1933; North of Cartago,

Costa Rica, July 11, 1932, B. S. Kaiser.

Tenagogonus quadrilineatus (Champ.)

1898. Limnometra quadrilineata Champion, Biol. Centr.-Amer.,

Ehynch. 11:151, PI. IX, Fig. 17.

1934. Tenagogonus quadrilineatus Drake and Harris, Ann. Car-

negie Mus., XXIII: 216, PI. XXIV, Fig. g.

Tejupilco, Temascaltepec, June 16, 1933.

POTAMOBATES THOMASI Hungerford

1937. Potamobates thomasi Hungerford, JL Kans. Ent. Soc., X :63.

APRIL, 1938]

DRAKE AND HARRIS— GERRID^

1937. Potamobates thomasi Hungerford, Bull. Brooklyn Ent. Soc.,

XXXII: 146, PI. II.

Three examples, Tejupilco, Temascaltepec, June 16, 1933.

Metrobates porcus Anderson

1932. Metrobates porcus Anderson, Jl. Kan. Ent. Soc., V:59.

1932. Metrobates spissus Drake and Harris, Ann. Carnegie Mus.,

XXI :88, PI. II, Figs. 1, 2d, 4d.

1932. Metrobates porcus Anderson, U. of Kan., Sci. Bull., XX: 308,

PI. XXV, Fig. 3.

Several specimens, some alate, Bejucos, Temascaltepec, July

3, 1933.

These individuals vary from the types of M. spissus in that

the mesonotum is more obliquely narrowed anteriorly and less

abruptly rounded at the front angles. In spissus the sides of

the mesonotum are practically parallel for their entire length.

Metrobates denticornis (Champion)

1898. Trepobatopsis denticornis Champion, Biol. Centr.-Amer.,

Rynch., 11:158, PI. IX, Fig. 26.

1932. Metrobates denticornis Drake and Harris, Ann. Carnegie

Mus., XXI: 87, PI. II, Figs. 2b, 3, 4b.

Several apterous and macropterous males and females,

Bejucos, Temascaltepec, July 3, 1933.

Trepobates trepidus D. & H.

1928. Trepobates trepidus Drake and Harris, Proc. Biol. Soc.

Wash., 41:27.

1932. Trepobates trepidus Drake and Harris, Bull. Brooklyn Ent.

Soc., XXVII: 117, PI. XII, Fig's. 8 & 9.

A long series of winged males and females, Tejupilco, Temas-

caltepec, June 15 to 18, 1933.

Trepobates becki D. & H.

1932. Trepobates becki Drake and Harris, Bull. Brooklyn Ent.

Soc., XXVII: 120, PI. XII, Figs. 3 & 7.

One apterous male. Real de Arriba, Temascaltepec, July 7,

1933; several females and one male., Tejupilco, Temascaltepec,

June 16, 1933. The legs seem to be constantly shorter in this

species than in T. trepidus D. & H.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

REPORT UPON SOME WATER BUGS FROM MEXICO

COLLECTED BY MR. MELDON EMBURY

BY H. B. HUNGERFORD

A small collection of Aquatic and Semiaquatic Hemiptera

was made for me during the summer of 1937 by Mr. Meldon

Embury. Since the material contains some new species and

some interesting distributional records, I record them here.

CORIXID^

Arctocorixa beameri Hungerford. 10 ^ ^ and 17 9 $ .

“Mexico, June 5, 1937. Juan Manual, near El Salto, 9300

feet above sea level. Pine forest region.” This species was

described from five specimens taken in Cochise Co., Arizona, in

1927, and the above Mexican series is the first encountered since

the species was described.

Neocorixa snowi Hungerford. 9 $ $ and 49 9

“Mexico, June 10, 1937. San Antonio, near El Salto, 5000

feet above sea level, semitropical.” 1 $ from “Juan Manual

near El Salto, 9300 ft. above sea level. Pine forest region.”

Graptocorixa bimaculata (Guer.) 13^^ and 18 9 9

“Mexico, August 20, 1937. Oaxaca, 5000 feet above sea level.

Semidesert, irrigated land, semitropical.”

Graptocorixa emburyi Hungerford, n. sp.

Length 6.3 mm.; width across eyes 1.95 mm. (male), 2.04

mm. (female).

General color dark with pattern typical for the genus. Pale

lines on base of clavus more or less reddish and broader than

the dark ones, elsewhere on the hemelytra the dark bands are as

broad or a little broader than the pale ones and undulate. Pro-

notum crossed by nine or ten dark bands, no wider than the pale

interspaces; the anterior four entire, others may be somewhat

split. Basal half of embolium reddish; a sooty blotch on suture

of embolium, behind which the margin is checkered. Venter

brown to black. Head and eyes yellowish, only the base of the

middle tibia and distal end of middle tarsus embrowned.

APRIL, 1938]

HUNGERFORD— WATER BUGS

The so-called beak reduced. Frontal depression of male

shallow ami somewhat pilose; female with the same facial area

pilose. Lower margin of basal half of front femur in both

sexes provided with about four, long stout bristles. Inner base

of male femur with small stridular patch. Front tarsus long,

slender, tapering to a single stout claw in both sexes. The

male pala provided with about 36 pegs arranged as shown in

the drawing. Strigil of male of moderate size, flat, and composed

of six longitudinal striae. Genital capsule of male as shown

at Figure 7.

Holotype male. Allotype and eight paratypes, all females,

labeled “Mexico, June 10, 1937, Meldon Embury, San Antonio,

near El Salto, 5000 ft. above sea level, semitropical,” are in the

Francis Huntington Snow Entomological Museum, University of

Kansas.

This species is a trifle smaller than Graptocorixa serrulata

(Uhler) . It differs from Uhler’s species in the more slender

pala, reduced beak, sharper metaxpyhus, shape of strigil, and in

lacking the curious projections on the dorsum of the male abdo-

men characteristic of G. serrulata Uhler, as well as the differ-

ences in the shape of the male claspers. The palae of Uhler’s

species are usually strongly marked with black while none of

the specimens of this new species is so marked.

Notonectid^

Notonecta impressa Fieber. 1 $

“Mexico, August 6, 1937, Pachuca, State of Hidalgo, 8000 ft.”

Notonecta mexicana A. & S. 1 ^ and 3 2 2

“Mexico, August 20, 1937, Oaxaca, 5000 ft. semidesert irri-

gated land, semitropical.”

Notonecta penelobata Hungerford, n. sp.

Male holotype 14 mm. long; width of pronotum 5 mm. The

female allotype measures 13 mm. long. Appears to be slightly

more slender than N. lohata Hungerford.

Male nearly black, female with the hemelytra tan with darker

maculations. Legs with the black longitudinal stripe characteris-

tic of the subgenus Erythronecta. It is probable that the color

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

range of the species is from greenish tan through red to black,

as in other species of the group.

Head moderately large, anterior outline as viewed from above

flattened; vertex slightly produced beyond anterior line of the

eyes; vertex slightly longer than its anterior width in male, an-

terior margin of vertex less convex and plainly shorter than the

frontal margin of the eye; anterior breadth of vertex : synthlepsis

:: 20:6. Pronotum about one and one-half times the length of

the head, lateral margins divergent, straight in male and nearly

so in female; anterior angles normal; lateral ledge as seen from

the side sinuate, oblique and shorter than the rear margin of

the eye below it; anterior half moderately explanate. Anterior

lobe of membrane larger than the posterior. Anterior trochanter

of male with short hook. Mesotrochanter rounded. Keel of fourth

abdominal sternite bare. Last abdominal sternite of female

slender, the lateral margins reflexed and constricted beyond the

middle, the tip deeply incised. Last abdominal sternite of male

unusually broad; male genital capsule with a large, pyramidal

projection in front of clasper.

Type in the Francis Huntington Snow Entomological Museum

of the University of Kansas. Described from the holotype and

one female allotype, labeled “Mexico, June 10, 1937, Meldon

Embury, San Antonio, near El Salto, 5000 ft. above sea level,

semitropical.”

This species belongs to the subgenus Erythronecta. In my

key, pages 65-66 olThe Genus Notonecta of the World, it would

run to Notonecta lobata Hungerford. The male is readily dis-

tinguished from N. lobata Hungerford by the shape of the genital

capsule and the female by the shape of the last two abdominal

sternites. See figures 3 and 5.

Notonecta penecompacta Hungerford, n. sp.

Females 13 mm. to 13.5 mm. long; width of pronotum 4.5

mm. to 4.95 mm. A little more slender than N. compacta Hunger-

ford.

The females vary from tan and black to red and black and

have the black longitudinal stripe on the legs characteristic of

the subgenus Erythronecta to which this species belongs.

Head moderately large, anterior outline, as viewed from above,

flattened; vertex slightly shorter than its width in these females;

anterior breadth of vertexisynthlipsis: :20:7. Pronotum shaped

very much as in N. cormpacta Hungerford, somewhat less strongly

constricted, the anterior marginal lobe a little longer. Meso-

APRIL, 1938]

HUNGERFORD— WATER BUGS

trochanters not angulate. Penultimate abdominal sternite slender,

inconspicuously notched at tip; last abdominal sternite as shown

in drawing (fig. 4).

Holotype female and two paratype females in Francis Hunt-

ington Snow Entomological Collection at University of Kansas.

These are labeled “Mexico, June 10, 1937, Meldon Embury, San

Antonio, near El Salto, 5000 ft. above sea level. Semitropical.”

These three females bear same label as the male and female

of Notonecta penelohata Hungerford, but represent an unde-

scribed species that is closely related to N. compacta Hunger-

ford, from which it differs both in the shape of the pronotum

and in the last abdominal stemites. N. compacta has a shorter

and broader last abdominal sternite as can be seen by compar-

ing the drawing on page 74 of “Notonecta of the World” with

the illustrations furnished herewith. The shape of the pronotum

is intermediate between N. compacta Hungerford and N. mexi-

cana A. & S. while the last two abdominal sternites are distinctive.

While two species of females bear the same label as the male

of N. penelohata Hungerford, I have no doubt that the female

with the nearly straight lateral pronotal margins belongs to N.

penelohata Hungerford since that species is obviously related

to N. lohata Hungerford. In the subgenus Erythronecta the

females are as specifically distinct as the males.

Notonecta repanda Hungerford. 6 specimens.

“Mexico, May 30, 1937, Durango City, 5000 ft. desert. Irri-

gated land.”

Notonecta melaena Kirkaldy. 1 2

“Mexico, August 20, 1937, Oaxaca, State of Oaxaca, 5000 ft.,

semidesert, irrigated land. Semitropical.”

Notonecta indicoidea Hungerford. 3^,5$

“Mexico, May 30, 1937, Durango, State of Durango, 5000 ft.

desert, irrigated lands.”

Notonecta distinctoidea Hungerford. Six specimens

“Mexico, June 5, 1937, Juan Manual, near El Salto, 9300 ft.

above sea level.” These run to this species.

THE PAN-PACIITC ENTOMOLOGIST [yOL. XIV. NO. 2

APRIL, 1938]

HUNGERFORD— WATER BUGS

1. N. compacta Hungerford. Head and pronotum of female;

2. N. penecompacta n. sp. Head and pronotum of female; 3. N.

penelobata n. sp. Male genital capsule; 4. N. penecompacta n. sp.

Abdominal venter of female; 5. N. penelobata n. sp. Abdominal

venter of female; 6. G. emburyi n. sp. Dorsum of abdomen of

male; 7. G. emburyi n. sp. Male genital capsule; 8. G. emburyi

n. sp. Face of female, 9. G. emburyi n. sp. Inside view of male

pala; 10. G. serrulata (Uhler). Face of female.

A NEW HYDROMETRA FROM NEW CALEDONIA

AND AUSTRALIA^

BY H. B. HUNGERFORD

Hydrometra risbeci Hungerford, n. sp.

Length, 8.5 mm. to 11.1 mm.; females longer than the males.

General color varying from yellowish brown to brown. Pronotum

bearing a median longitudinal silvery stripe that may be continued

forward on the post-ocular part of head; a curved silvery band

above the anterior acetabula, and a submarginal longitudinal

brown band on metathorax and abdomen. Venter of head, thorax

and abdomen frosted. In winged forms the hemelytra are brown

with a median longitudinal silvery stripe. In wingless forms the

abdominal tergites are shiny reddish brown in males and at least

medianly so in females, except the last tergite which is pubescent

laterally in males and entirely pubescent in females.

Head: Length 80 units (holotype), 86 units (allotype). The

ratio of the anteocular part of the head to the post-ocular part

is given by the formula, AO:PO::49:25 (holotype), 54:25 (allo-

type). Dorsal interocular groove short, less than the diameter

of an eye; ventral interocular groove not longer than the eye;

clypeus connate ; rostrum long almost reaching the anterior margin

of pronotum; beginning with the basal the lengths of the seg-

ments of the antennae are in the following ratio: 15:30:60:32

(holotype), 15:30:60:37 (allotype).

Pronotum: Length 45 units (holotype), 50 units (allotype).

An encircling row of pits parallel to the anterior margin and

about two units from it; posterior lobe with a median row of pits,

a few pits near posterior end and about four antemarginal pits

behind acetabula of first pair of legs.

Wings: Hemelytra of holotype fully developed, exposing the

end of last abdominal tergite. Hemelytra of allotype minute.

Coxae: The distance between the first and second coxae is to

that between the second and third coxae as 30:42 (holotype);

^ Contribution from Department of Entomology, University of Kansas,

Lawrence, Kansas.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

anterior and middle acetabula with two pits anterior to the cleft

and two pits posterior to it; the posterior acetabulum has one pit

on top.

Femora: Anterior femora of the male extending to base of

antennae, those of female relatively longer; posterior femora of

male surpassing the middle of first genital segment, of female

attaining rear margin of the fifth abdominal segment.

Abdomen: Length 136 units (holotype), 160 (allotype). Two

backward directed spine-like processes on anterolateral margin

of sixth ventral segment of male and a pair of hair tufts one-

third in front of rear margin on slightly swollen area ; first genital

of male longitudinally swollen beneath and depressed laterally;

above the segment is elongate with the sides gradually diverging

to the rear; the terminal dorsal process short and sharp, not over

one-sixth the length of the segment; sixth abdominal tergite of

female broader behind than in front, the terminal dorsal process

slightly more than a third the length of the segment which bears it.

Holotype, allotype, and one paratype labeleid “New Cale-

idonia. May 23, 1931, Jean Risbec” in Francis Huntington Snow

Entomological Museum, University of Kansas. Twelve para-

types labeled as follows: “Brisbane, Australia, Harvard Exp.

Darlington.” “Monager Lake, Perth, W.A., X-19-1931, Harvard

Exp. Darlington.” “Townsville, Q., March, 1932, Harvard Exp.

Darlington.” Most of these from the Harvard Expedition are

in the Museum of Comparative Zoology, Harvard. Two para-

types, labeled “Oubatche, N. Caledonia” and determined H.

aculeata Montr. by Distant are in British Museum.

This species is very different in color and shape from H.

aculeata Montr. also described from New Caledonia. The latter

species is greenish brown, stout, and lacks the hair tufts de-

scribed for the males of this new species. This species runs to

section 22 of our key to species of eastern hemisphere' and may

be separated from the other two species of this section as follows:

A. Head not conspicuously longer than the thorax.

B. Acetabular pits not conspicuous, less than four on middle

acetabula. Males without hair tufts on sixth ventral

abdominal segment, H. gracilenta Horvath

BB. Acetabular pits conspicuous, four on middle acetabula.

Males with hair tufts on sixth ventral abdominal

H. risbeci Hungerford

AA. Head conspicuously longer than the thorax, H. aculeata Montr.

^ Hungerford, H. B., and Evans, N. E., Annales Mxisei Nationalis Hungarici

Vol. xxviii, p. 40, 1934.

APRIL, 1938]

HUNGERFORD— HYDROMETRA

Recently I have examined five specimens forwarded for study

by Mr. E. P, Van Duzee from material collected on the Man-

garevan Expedition of the Bishop Museum. Four of these are

labeled “Tahiti L, Vairao, March 30, 1934. Society Islands, Vairao

Plateau, on stagnant pond, E. C. Zimmerman, collector.” One

is labeled “Tiupi Bay, Papeari, Society Islands, March 31, 1934,

on mape. E. C. Zimmerman, collector.” These specimens, while

slightly smaller and showing some slight differences, belong to

the species here described and extend its known range.

DORSAL ABDOMINAL SCENT GLANDS IN NYMPHS

OF LYG^ID^

BY ROBERT L. USINGER'

The position and number of the dorsal scent glands in

heteropterous nymphs was studied by Guide (Ber. Senck.

Naturf. Ges. Frankfort-am-Main, 1902:85-134, pis. 7-8). He

found that the typical number and arrangement for Heterop-

tera was three glands opening on the anterior margins of the

fourth, fifth, and sixth abdominal segments respectively and

that most Lygaeidae fell within this category. Lygceus and Cymus,

however, were said to have only two glands.

I have recently studied numphs of a number of representa-

tive genera in an attempt to further define the higher groups of

the Lygaeidae. The results are tabulated below:

Glands on the fifth and sixth segments only — LYG.®:iNi5::

hygadini, Lygceus, Oncopeltus, Astacops, and Ccenocoris; Orsillini,

Nysius, Neseis, Ortholomus, and Oceanides; Metrargini, Me-

trarga. Chauliopin.5: : Chauliops. Geocorin^: Geocoris. Blis-

sing: Blissus and Ischnodemus.

Glands on fourth and fifth segments only — Cyming: Cymini,

Cymus, Arphnus, and Minus.

Glands on fourth, fifth and sixth segments — all other

Lygaeidae known to me including Cyming: Ischnorrhynchini,

I schnorrhynchus. Colobathristing: Phcenacantha. Hetero-

gastring: Heterogaster. Pachygronthing : Oedancala. Rhy-

PARACHROMING: Myodocha, Ligyrocoris, Paromius, Orthoea,

Eremocoris, and Gastrodes.

The only possible intermediate which I know is Chilacis

typhce Perr. (Jordan, Stett. Ent. Zeit., 96:11, 1935) of the

Artheneing, in which the anterior gland is obsolescent.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

A NEW SPECIES OF CCELAMBUS FROM CALIFORNIA

(Coleoptera: Dytiscidse)^

BY HUGH B. LEECH

Vernon, B. C.

Coelambus curvipes Leech, n. sp.

A medium sized, dull yellow species, with the elytra infus-

cate in the apical two-thirds. Front not margined, male pro-

tarsal claws unmodified, legs bicolored. Length 3.75 — 4.25 mm. ;

width 1.80 — 2.15 mm., the males larger than the females.

Head rufous, tinged with piceous near the eyes, and with a

pale spot on the vertex. Antennae yellowish, the outer segments

inf uscate. Pronotum slightly narrower than the base of the elytra ;

rufescent, yellowish laterally, the disc, base, and a spot on each

side of the disc, piceous or dark rufo-piceous. Elytra pale tes-

taceous in the basal third, and somewhat irregularly along the

sides to the apex; disc diffusely infuscate.

Dorsal surface shining, not alutaceous. Head and pronotum

fairly densely puctate, the punctures rather small and distinctly

irregular as to size and position. Elytral punctation coarser,

especially towards the apex, and more regular; distinct sutural

and discal series of coarser punctures present, the subhumeral

series hardly apparent. Under surface black; legs testaceous, the

apical fourth of the front and middle femora rufo-piceous ;

epipleura pale, rufous apically. Metasternum and coxal plates

coarsely punctate, the epipleural and abdominal segments more

sparsely and less coarsely so.

Male characters: Protarsi rather narrowly dilated, broader

than the mesotarsi, both a little broader than the equivalent in

the female; claws simple. Front femur weakly arcuate, tumid

medially, the tumid area with a few parallel transverse rugae;

in the apical third there is on the anterior face a somewhat trans-

verse, almost semi-circular depression, the bottom of which makes

a notch in the ventral edge of the femur, which is there margined

with stiff, golden setae giving it much the appearance of the an-

tennal-cleaning organ found on the fore tibiae of many Carabidae;

sides of the depression lightly reticulated. Posterior face of the

femur with a longitudinal line of long silky pubescence near the

upper margin, and a shorter one apically near the lower margin.

Front tibia broad, the sides slightly sinuate; with a longitudinal

line of very dense long silky pubescence on the middle of the pos-

terior face. Middle femur flattened, the anterior face reticulate and

with parallel strigae; dorsal margin sinuate; lower (inner) margin

^ Contribution from the Division of Forest Insects, Dominion Entomologist

Branch, Vernon, B. C.

APRIL, 1938]

LEECH— CCELAMBUS

strongly arcuately lobed in the basal third, narrowed in apical

third, and produced downward at the apex, with a brief longi-

tudinal line of short silky pubescence at the apex of the lobe.

Middle tibia very lightly reticulated, almost parallel-sided, slightly

lobed internally near the base, with a longitudinal line of thin

silky pubescence along both the upper and lower edges of the pos-

terior face. Hind femur with elongate reticulations, of normal

shape. In both curvipes and pedalis the apex of the middle lobe

of the aedeagus is broadly rounded; in such other species as I have

examined, the tip is always acuminate.

Female characters: Front femur only slightly tumid medially,

no funnel-shaped depression in apical fourth, with only a trace of

the longitudinal lines of silky pubescence on the posterior face.

Front tibia without a line of silky pubescence on the posterior

face. Middle femur variable: (a) upper margin distinctly sinu-

ate, lower margin arcuately produced in basal third, but less

strongly so than in the male; lower apical angle produced down-

ward, but less than in the male; (b) upper margin slightly sinu-

ate, lower weakly lobed in apical half, lower apical angle slightly

produced downward; (c) femur of the usual type, sub-parallel

sided, apex not produced downward. Middle tibia: (a) broader,

very gradually narrowed from apex to near base, then sharply

constricted; (b) broad, less gradually narrowed, the basal con-

striction hardly apparent; (c) of the usual type, triangular. Hind

femur and tibia normal.

Holotype $ , length 4.10 mm. ; width 2.12 mm. Oakley, Con-

tra Costa Co., Calif., September 5, 1936 (H. B. Leech) ; No. 4596,

in the California Academy of Sciences, Entomology. Allotype:

2, length 3.75 mm.; width 1.28 mm.; middle femora and tibiae

as in form (b) of above; same data as holotype, in C.A.S., Ent.

(No. 4597). Paratypes: 5^, 7$; same data as the holotype.

Paratypes will be distributed to the Canadian National Collec-

tion, Ottawa, Mr. R. Hopping and Dr. H. C. Fall; the remainder

in my own collection.

The type locality is a small, shallow, muddy pool amongst

Typha, on the north side of the railway embankment a few hun-

dred yards from Oakley, Calif. This little pool is not saline,

but is much fouled by cattle, and from an accumulation of old

tin cans, etc.

Curvipes traces in Fall’s key (1919, The North American

Species of Coelambus, published by John D. Sherman, Jr., Mount

Vernon, N. Y.), to near pedalis Fall, which also occurs in Contra

Costa County (Vine Hill), as well as south to San Diego County.

Actually, however, it is closer to the recently described thermarum

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

Darlington (1928. New Coleoptera from Western Hot Springs.

Psyche, 35:1) from hot springs in Nevada. Thanks to Dr. Fall’s

generosity, I have a male of pedalis from the type series, and

I have studied specimens in the collections of the California

Academy of Sciences; I have examined also a male paratype

of thermarum in Dr. E. C. Van Dyke’s collection at the Academy.

The three species may he separated as follows:

1. Head without a median pale spot at base; robust species, more

obtusely rounded in front. Front femur of male with a patch

of dense, short pubescence apically; middle tibia strongly,

broadly produced inwardly at apex pedalis

Head with a median pale spot at base; more elongate species,

less obtusely rounded in front. Front femur of male not pu-

bescent apically; middle tibia not produced inwardly at apex

2. Pronotum piceous, vaguely paler at the sides; elytra pale tes-

taceous, with an irregular infuscate cloud from behind the

middle nearly to apex. Front femur of male with a broad

transverse impression on the interior face a little before the

apex; the lower margin of the impression forming a broad

shallow emargination in the ventral edge of the femur; femur

unicolorous ...thermarum

... Pronotum rufescent, yellowish laterally, the disc, base and a

spot on each side of the disc, piceous; elytra pale testaceous,

with an irregular infuscate cloud from basal third nearly to

apex. Front femur of male with a transverse impression, the

lower margin of which forms a deep, semi-circular emargina-

tion in the ventral edge of the femur. Femur usually bi-

colored curvipes

In males of thermarum and curvipes, the profemoral impres-

sion is slightly oblique, the top being more apical; the lower end

is set with short stiff cilia. In pedalis there is also an oblique

profemoral impression but it is broad and shallow, minutely

granulose, and runs in the opposite direction; the lower end is

apical, but does not form an emargination in the ventral edge

of the femur.

The progressive modifications of the middle femora and

tibiae in the females of curvipes are most interesting; a larger

series would probably show intermediates. In the specimens at

hand it is noted that when the middle legs are most like those

of the males, the apical rufo-piceous patch on the femur is

darkest, while in those with unmodified legs it may be entirely

absent.

APRIL, 1938]

MALLIS— THE FIRE ANT

THE CALIFORNIA FIRE ANT AND ITS CONTROL

BY ARNOLD MALLIS

Los Angeles, California

Any individual concerned with ant control in California all

too soon becomes aware of the importance of the California

fire ant, Solenopsis xyloni var. maniosa Wheeler, as an ant pest

in the home, garden, and farm. This native ant is exceedingly

common in Southern California, as well as in the interior

valleys of California up through Sacramento, occurring below

altitudes of 1,500 feet. The entomologist and exterminator are

interested in this ant due to its habits of raiding such divers

foods as soda crackers, cereals, nut meats, bacon and greases,

coffee cakes, watermelon, etc., etc. Moreover, this ant by means

of its fiery sting and mandibles is prone to attack human beings,

and often injures children as they play upon the ground. At

times they will invade the bed, making same a bit too warm

for its normal occupants. Several women have reported that

these ants attack newly-born babies that have been oiled, but

the writer is as yet unable to confirm if this is the species

actually concerned. Young chicks and other domestic animals

often suffer by the depredations of these ants, and they are often

incriminat&d by the farmer for stealing and damaging seeds,

grains, and nut meats. In the home, they will often remove so

much earth from beneath concrete steps as to actually imperil

them, and they are at times indirectly the cause of dry rots due to

their piling earth on the mudsills beneath the house. Lawns

suffer greatly from their unsightly mounds as well as from

their tendency to feed upon succulent grass tissue. Not even

clothes are immune from these ant rogues, and they will feed

upon linen, whether soiled or scrupulously clean, and have been

known to bore through an entire box of unused silk hose. In

the garden they faithfully tend aphis on ornamental and crop

plants, and will often remove the epidermis from the leaves;

moreover, they destroy many plants by making their nests about

the base of the plants, evidently feeding upon the roots. The

farmer often finds these insect villains in his walnuts, almonds,

tomatoes, watermelon, and other fruits and vegetables, through

which they readily bore their way. In the citrus orchard they

tend aphids and coccids, and in certain instances have been

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

known to remove the bark from young trees in order to feed

upon the cambium. Not the least of these injuries is the nervous

effect that these ants have upon house-wives, many of whom are

made frantic by a siege of these annoying ants. Lighted store

windows play the host to huge swarms of these ants, who dia-

bolically enough, often choose those windows advertising ant

syrups and ant pastes in order to display their charms. Thus

it can be readily understood why these tireless scavangers must

frequently be curbed.

The workers of these ants are 1.6 to 5.8 mm. in length, with

a yellowish-red head and thorax and a black abdomen, and are

to be seen foraging throughout the year. The queens are about

6.6 mm. in length, light reddish brown with a black abdomen,

and have been observed from the beginning of March through

the middle of November. The males are reddish black with

reddish-yellow legs. Swarming occurs most commonly from

May through September when the multitudinous queens and

males, and the innumerable workers major and workers minor

literally boil from the confines of the earth. It is then that

wingless queens may be found scurrying over the ground. Each

nest apparently issues swarms towards the evening of a warm

or hot day, particularly after several cool days have transpired.

In the fields, the nests of these ants may lack craters, being

confined to small round openings in the soil or to fissures

in the ground, and are often situated beneath old logs, cow

chips, and animal carcasses. When craters are present, they are

usually to be found in grass lawns and along concrete walks

and steps. The nests in the lawn are irregular, shallow, about

one-half to one and one-half inches in depth, often several feet

in length; and may present a porous appearance as when situated

about the base of a plant. Old bones, buried by dogs, will fre-

quently harbor huge numbers of these ants. It is interesting

to note the many colorful Staphylinid myrmecophiles emerging

from the nest entrances. Favorite nesting places in the vicinity

of the house are at the edge of walks, or in cracks in and about

steps. Stones and boards appear to be particularly adapted to

serve as nesting sites for these ants. In the majority of cases,

the nests are situated in the vicinity of the kitchen, and not

infrequently they will nest in the walls whereupon they will be

found emerging from crevices in closets and between the tiles

APRIL, 1938]

MALLIS— THE FIRE ANT

of the sink. Should a furnace be situated in the basement, the

ants will often have enormous nests directly beneath outlets

emerging from the furnace.

The worker minors are very pugnacious and do not hesitate to

bite and sting whenever they are disturbed about their nests.

When so aroused, they rush forth from the nests in frenzied

hordes, raise their blackish abdomens, and vibrate them very

rapidly; although the worker major does not hesitate to bite, it

rarely stings. The tendency to sting apparently diminishes in-

versely with the .distance from the nest. Some individuals are

affected for hours by the irritating sting whereas others may not

notice it after thirty seconds. Apparently these ants have the

tendency to seek tender portions of the skin, such as, between

the fingers, before they assiduously apply both abdomen and

mandibles.

During the warmer part of the day, the ants for the most

part keep to their nests, foraging most actively in early morn-

ing and towards the evening. However, if the nests are in a

shaded and moist situation, they will forage throughout the

entire day. At night they will be found about lights where they

prey upon mayflies, hydrophilids, corixids, and upon other in-

sects that are attracted to light.

The Argentine ant, Iridomyrmex humilis Mayr, intolerant

of all other ant life, is the deadly enemy of the California fire

ant; and the writer has observed the Argentine ants on several

occasions to annihilate colonies of the fire ants. It has also

been observed that in those localities where Pheidole hyatti

Emery ocurs, it is held in abeyance by the fire ant; and once

the fire ant is controlled, this ant may then commence to invade

the home in its stead.

Control of these ants is usually rather difl&cult since

arsenical syrups and baits are rarely effective. Syrups and

baits utilizing thallium sulphate are much more efl&cient, but

,due to the insidious nature of this poison, as well as to the lack

of an effective antidote, the use of thallium sulphate by pri-

vate individuals, is prohibited in California. Thus, of necessity,

other methods must be utilized in controlling this ant. The

writer has used carbon disulfide, and a mixture of carbon disulfide

and carbin tetrachloride in the ratio of 1 part carbon disulfide

to 3 parts carbon tetrachloride, in the direct control of these

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

ants, with excellent results. Since carbon disulfide by itself

is dangerously explosive, the use of the mixture is to be recom-

mended. Armed with a screw driver, a burlap bag, and an

oil can with an eight-inch curve-tipped spout, a survey for

ant colonies is conducted about the home. Since it is in the

vicinity of the kitchen that most of the troublesome colonies

are encountered, it is usually advisable to make the in-

spection when the kitchen side of the house is shaded, for

the ants may not emerge from their nests in full sunlight. The

screw driver is used to probe the earth along the foundation,

walks, steps, and around plants; it is also utilized to strike

the sides of the curbing, wooden stakes etc. It is thus that the

fire ants are disturbed, when they emerge in fiery masses, to

their own undoing. For now, a few shallow holes are made

in the vicinity of the nest by means of the screw driver, and

then a few drops of the liquid fumigant are poured from the

oil can into each opening. The holes are then covered by

pressing the earth with the handle-end of the screw driver.

Cracks in the pavement and steps are favorite nesting sites,

and these are also treated with a few drops of the fumigant,

and then covered for a few minutes by the wet burlap bag in

order to confine the fumes. This treatment when repeated two

or three times over a period of two weeks usually gives very

satisfactory control.

When the ants are known to emerge from ventilators within

the house, or even from cracks in the floor situated in the

center of the house, it may then be concluded that the ants

are probably nesting beneath the house. Excellent control for

at least one season may be obtained by dusting the under por-

tion of the house with lime, slaked or unslaked lime being

equally effective. Approximately three-fourths of a bag of lime,

an amount sufl&cient for the average six room home, is forced

through the ventilators beneath the house by a bellow-type

duster. The dust should be evenly distributed throughout, with

particular attention paid to the area beneath the kitchen. After

a day or two, a few struggling colonies may emerge at the edges

of the foundation, and these may be treated with the liquid

fumigant in the previously described manner. It may be men-

tioned that black widow spiders, and other spiders as well,

appeared to be sorely distressed by the lime dusting treatment.

MALLIS— THE FIRE ANT

APRIL, 1938]

When the ants occur in closets, they can be curbed by con-

fining the fumes of a saucerfull of ethylene dichloride-carbon

tetrachloride mixture to the closets for a few days. This mix-

ture is composed of 3 parts, by volume, of ethylene dichloride

and 1 part, by volume, of carbon tetrachloride.

Experiments with carbon disulfide emulsion, as well as with

corrosive sublimate solution have been conducted, but much

work must yet done to prove their efl&ciency.

Notes on Aphids of Eucalyptus

Although aphids have been recorded from Eucalyptus from

other parts of the world there have been no reports, as far as

known, from this host in North America. However, the author

has recently collected two species of aphids upon Eucalyptus

corynocalyx, sweet gum, on the campus of the University of

California, November 11th and 12th, and many times since

then.

As might be expected, the insects were of species common

to this area. That occurring in greater numbers was Aphis

gossypii Glover; those present in lesser numbers were four or

five specimens of viviparous females of what is apparently

Amphorophora nervata (Gill.). They occurred on the new

tender shoots of the host, being attended by the Argentine ant,

Iridomyrmex humilis Mayr, which took the aphids into its

nest during the rain storms and brought them out later. The

numbers of the cotton aphid were so great that at times the

twigs were distorted and withered. — W. W. Sampson.

A Hawaiian Elaterid Beetle Introduced into California

The Hawaiian sugar cane wireworm, Monocrepidius exsul

Sharp, has become established in Alameda, California. The

adult was first collected by Herbert W. Graves, July 15, 1937 ;

and the larvae were later taken in February and March, 1938.

The identification was made by Dr. E. C. Van Dyke of the Uni-

versity of California. All of the insects were located in the

area of one city block in the western part of Alameda which

is composed of sandy soil. The exact extent of this establish-

ment is not known, but further investigation is being made by

the collector. The adult was found on a lawn; while the larvae,

both young and mature, were feeding on the roots of grass. —

Herbert W. Graves.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

THE ORNATE APHID, NEW TO NORTH AMERICA

{Myzus ornatus Laing)

BY E. O. ESSIG

My experiences with the ornate aphid, Myzus ornatus Laing,

during the past two years have been such as to induce me to

make this permanent record of them. The discovery of a new

and distinct insect pest is not a rare thing, but the circumstances

involved in connection with this particular species are most inter-

esting. On April 4, 1936, I collected a very small pale green

aphid from the young tips of fuller’s teasel, Dipsacus fullonum,

growing on a vacant lot adjacent to my back yard in Berkeley,

California. It occurred in considerable numbers on that host,

but I was unable to find it on any of the many ornamental plants

that were growing just over the fence in my own yard. How-

ever, a few specimens were taken on sheep sorrel, Rumex aee-

tosella, about a mile distant. The fact that both of these hosts

were introduced led to the conclusion that the aphid was prob-

ably also an immigrant and so specimens were sent to a number

of American aphidologists for determination. It proved to be

unknown to all of them. Failing to find a published descrip-

tion I .decided to describe it as a new species and sent in a manu-

script for publication just prior to leaving for a year of aphid

collection and studies in Europe. I forgot all about the little

green aphid, until October 14, when, examining some leaves of

English ivy, Hedera helix, collected in the Jardin Botanique,

Brussels, Belgium, which were heavily infested with the ivy aphid.

Aphis hederce Linn., I discovered 4 apterous specimens of what

I was sure could be no other than the one on fuller’s teasel in

California. This convinced me that it was probably not a new

species, but what was it? A diligent search along the ivy-cov-

ered walls of the gardens in the heart of a great city yielded a

few more specimens. And then winter frosts suddenly put a

stop to my out-door collecting. To my great surprise and delight

the new aphid was found in abundance in the greenhouses of

the Jardin Botanique, where it was taken on Crotalaria ana-

gyroides, Achyranthes sp. (Iresine) , Lantana sp., and Aelo-

tr opium peruvianum, all introduced plants.

APRIL, 1938]

ESSIG— MYZUS ORNATUS

Upon my arrival at the British Museum of Natural History,

London, on January 6, 1937, the mounted specimens were

anxiously displayed to Frederick Laing, who immediately recog-

nized the species as Myzus ornatus described by him in 1932^

from specimens collected on violet by L. N. Staniland at Devon,

near Dawlish, England, in February, 1932. This ended all of

my anticipations and made it necessary to withdraw the manu-

script from publication and thus avert another synonym, which

fortunately succeeded.

Laing had already taken the species on a considerable num-

ber of host plants in various parts of England, and he gave me

specimens taken on Salvia sp. and on Chrysanthemum sp. In

the course of my collecting in England additional specimens

were secured as follows:

On Richardia rehmanni, Panax lancasteri, and Buddleia ori-

entalis in the greenhouses at Wisley, Surrey, April 8, 1937 ; on

the young shoots of Ulmus campestris and on dandelion and

JJrtica dioica out of doors at Virginia Waters, Surrey, May 17,

1937; on apple, outside, at Arundel, Surrey, June 1, 1937; and

on Buddleia sp., dandelion, Geum urbanum, Lapsana communis,

Salvia sp., Scabiosa sp., and Teesdalia nudicaulis, out of doors,

at Cheddar, Somerset, June 2, 1937.

Since returning to California I have found this aphid quite

abundant in my garden at Berkeley on Fuchsia elegans, Poten-

tilla sp., and violet. It has also been taken in Berkeley on

Ranunculus repens by W. Sampson, November 1, 1937, and on

cultivated strawberry by E. Ivy, December 4, 1937. Specimens

were also received which were collected on heliotrope at Los

Angeles by Ralph H. Smith, December 6, 1937.

From all the evidence at hand it seems probable that this

aphid may have been introduced into all of these localities in

California and in Europe. Otherwise it is hardly possible that

it could have escaped detection for so many years.

Description

Apterous viviparous female. Very small, oval, flattened, pale

yellow or green, with darker green or dusky broken bands across

the dorsum as figured. In cleared specimens these dark bands

prove to be series of dark glandular pores arranged in irregular

^ Laing, F. A new aphid-pest of violets {Myzuswnatus sp. n.). Ent. Monthly

Mag., 68:62-53, 1932.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

Fig. 1. The ornate aphid, Myzus ornatus Laing. A, adult

alate female; a, cauda; c, rostrum; d, front of head and antenna;

/, cornicles; h, lateral abdominal dusky area; i, group of abdo-

minal gland pores; j, fenestras near base of subcostal vein. B,

adult apterous female; b, cauda; e, front of head and antenna;

g, cornicles; I, gland pores arranged in dark broken bands on

abdomen; k, lateral gland pores. All greatly enlarged. (Draw-

ing by U. S. Works Progress Administration.)

APRIL, 1938]

ESSIG— MYZUS ORNATUS

broken transverse bands. Body rugose and somewhat papillated.

Appendages transparent with the tarsi, apical portions of the

antennee and cornicles, cauda, anal plate, and genital plate dusky.

A few short hairs on the antennae and legs. Frontal tubercles

gibbous, rough, with few short slightly knobbed hairs, which occur

also on the antennae. Antennal segment I large and convex on

the inner margin, but not gibbous. Length of antennal segments :

I, 0.07 mm.; II, 0.05 mm.; Ill, 0.23 mm.; IV, 0.15 mm.; V,

0.13 mm.; VI, 0.24 mm. (base 0.07 mm.; unguis 0.17 mm.);

total 0.87 mm. Secondary sensoria absent. Rostrum extend-

ing beyond second coxae; pale with dusky tip; apical seg-

ments narrow. Cornicles almost cylindrical ; tapering slightly

apically; terminating in a conspicuous flange; imbricated and

roughened; apices often slightly recurved; length 0.31 mm. Cauda

nearly conical, slightly constricted basad; with two or three pairs

of hairs; length 0.12 mm. Length of body 1.20 to 1.70 mm.;

width 0.70 to 0.90 mm.

Alate viviparous female. Shape normal; black and pale green-

ish-yellow with dusky markings on the abdomen as illustrated.

Antennse, legs, cornicles, and cauda largely black or dusky. Frontal

tubercles less prominent than in the apterae. Antennse shorter

than the body; lengths of the various segments: I, 0.05 mm.; II,

0.06 mm.; Ill, 0.40 mm.; IV, 0.27 mm.; V, 0.20 mm.; VI,

0.38 mm. (base 0.10 mm.; unguis 0.28 mm.); total 1.36 mm.

Circular secondary sensoria arranged in a row throughout much of

the length of III and varying in number from 7 to 12. Wing veins

brown, faintly dusky bordered, the stigma long. Rostrum extend-

ing to the second coxae. Cornicles similar to those of the apterae,

but smaller, 0.25 mm. long. Cauda 0.14 mm. long. Length of

body 1.50 to 2 mm.; width 0.8 mm.; length of fore wings 2.50 to

3 mm.

Carabus forreri Bates in Arizona

Numerous specimens of this Mexican species of Carabus

have been collected in the Chiricahua Mts. of Arizona within

recent years. The first seen were collected on June 21, 1927,

by J. August Kusche and others were collected July 12, 1936,

by M. Cazier and Edward S. Ross. They are absolutely identical

with specimens from Durango, Mex., numerous examples of

which I have, including a practical paratype received from the

British Museum. — Edwin C. Van Dyke.

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 2

BELLS IN MEMORY OF W. E. HINDS

BY STANLEY F. BAILEY

Davis, California

Among the many famous entomologists who have passed

on during the past two years was Dr. Warren Elmer Hinds.

On January 11, 1936, Doctor Hinds died suddenly of a heart

attack at his home at Baton Rouge, Louisiana. Templeton,

Massachusetts, is his present resting place. His excellent work

on thrips, cotton insects, sugar cane pests and other groups

totals more than one hundred papers. A most excellent obituary

has heen published by F. L. Thomas, Journal of Economic Ento-

mology, 29:225-226, 1936.

In 1929 Prof, E. 0. Essig wrote with feeling a paper entitled

“Entomological Sentiment” (Ann. Ent. Soc. Am., 22:335-340).

Therein he stated that we should concern ourselves with placing

suitable memorials to “great leaders in entomology, as a recog-

nition of their services to the world and to preserve that infor-

mation for posterity.” It is with pleasure that I call attention

to the chime recently presented to the Massachusetts State College

and dedicated to Doctor Hinds by his classmate Bernard H.

Smith. Special exercises were held at Amherst on May 1, 1937,

at which time the .dedication was made to “an enduring memory

of one of our worthiest almuni.”

The chime consists of 10 bells ranging in weight from 275

pounds to 2000 pounds. The bells are of pure bell metal, made

of 78 per cent of Lake Superior copper and 22 per cent of new

block tin. Ages of experience have shown that only these metals,

in the correct proportions, form a perfect ringing alloy. The

bells were made and installed by a New York concern, the fore-

runners of which cast the Liberty Bell. On the Great Bell of

the chime is inscribed “In memory of Warren Elmer Hinds,

class of 1899, a distinguished scientist to whom music and the

beauty of this valley were ever dear, these bells are presented

to Alma Mater by his classmate Bernard H. Smith, A.D. 1937.”

As time adds to the list of great names in entomology, may

we occasionally have the desire to pause and “look back at

the landmarks in the distance and attempt to evaluate the lives

and contributions of the outstanding men in this science.”

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Vol. XIV

July, 1938

No. 3

THE

Pan -Pacific Entomologist

CONTENTS

LINSLEY, HABITS AND DISTRIBUTION OF SOME

SPECIES OF PLEOCOMA 97

LINSLEY. SYNONYMICAL NOTES ON SOME

NORTH AMERICAN CERAMBYCID.E 105

HATCH, A NEW SPECIES OF DONACIA FROM WASHINGTON 110

MEAD, NEW SUBSPECIES AND NOTES ON DONACIA 113

TING, A NEW SPECIES OF PANSCOPUS 121

LA RIVERS, NOTES ON CYSTEODEMUS IN SOUTHERN NEVADA 124

PRITCHARD, THE GENUS HODOPHYLAX JAMES 129

BOHART, G. E., SYNOPSIS OF THE GENUS

DALMANNIA IN NORTH AMERICA 132

BOHART, R. M., SYNOPSIS OF THE GENUS EUPARAGIA 136

USINGER, A NEW GENUS AND SPECIES OF ORSILLINI FROM CHINA 140

FIELD, A NEW RACE OF LYC^NA MARIPOSA 142

ARMITAGE, GEORGE RINGO WILSON, OBITUARY NOTICE 143

Published by the

Pacific Coast Entomological Society

in co-operation with

The California Academy of Sciences

San Francisco, California

1938

THE PAN-PACIFIC ENTOMOLOGIST

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The Pan-Pacific Entomologist

VOL. XIV, No. 3 July, 1938

NOTES ON THE HABITS, DISTRIBUTION, AND STATUS

OF SOME SPECIES OF PLEOCOMA

(Coleoptera, Scarabaeidae)

BY E. GORTON LINSLEY

University of California

(Continued from page 58)

Pleocoma puncticollis Rivers

Pleocoma puncticollis normally is clothed with black or

brownish-black hairs. However, one example from a series col-

lected at Beverly Hills, Calif., October 1928 (Van Dyke collec-

tion) is clothed entirely with golden pubsecence, indicating that

this character should be used with discretion.

During the summer of 1935, workmen in Westwood Hills,

Los Angeles County, uncovered females of this species two and

three feet beneath the surface of the ground and larvae as ideep

down as eight feet. The fact that living females were found in

midsummeP suggests either that this sex lives throughout the

year or that pupation occurs early and activity awaits the winter

rains. If this last were true, one would expect also to find males

in the course of summer excavation and yet thus far, to the b^t

of my knowledge, no males have been found at that time. In

Berkeley, pupae of male hehrensi may be found even after the

first rains have brought. out one or two flights.

Distribution of Species

Our knowledge of the distribution of Pleocoma is still in a

fragmentary state. On the basis of available data, the most

widely (although discontinuously) distributed species appear to

be puncticollis (Santa Monica, Los Angeles Co., to Alamo, Lower

California), duhitalis (Forest Grove, Washington Co., to Cor-

valis, Benton Co., Oregon), australis (Mt. Wilson, Los Angeles

Co., to San Diego Co.), and hirticollis (Nevada Co. to Fresno

® Females of hehrensi have also been taken in midsummer (E. S. Ross, col-

lector) as well as those of australis (J. O. Martin, collector).

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 3

Co.), although the writer has been unable personally to verify

the southern-most records for the last two species. Most state-

ments in the literature indicating a wide range for a species have

resulted from the confusion of more than one species. As has

been shown above, Mr. Davis’ records for P. hehrensi were based

in part upon P. sonomce, and his statement that “P. fimbriata

seems to be the most common and widely distributed species in

the genus” resulted from confusion with P. tularensis.

The large extent of the known territory occupied by Pleocoma

today, even if one excepts the Alaska record, when considered in

the light of the limited means of dispersal, indicates a relatively

ancient distribution. The genus was, in all probability, already

widespread in the Miocene and its distribution was undoubtedly

affected by the climatic and topographic changes which have

taken place since that period. During the Pliocene much of

California was occupied by inland seas. An arm of the sea

extended inward through Humboldt County, another just north of

the present San Francisco Bay, a third near Monterey Bay, etc.

As a result, much of the San Joaquin Valley was under water,

and the coastal region south from the Sonoma area was repre-

sented by a chain of islands”. When the known present distri-

bution of Pleocoma is superimposed upon a palaeogeographic

map of Pliocene California^ a striking correlation is observable

between its present occurrence and the distribution of Pliocene

land masses. No known localities are far from these former

land areas. This may possibly account for the absence of the

genus from many parts of California and also suggests additional

regions where species may yet be found (i.e. coastal region in

Monterey, San Luis Obispo, Mendocino, and Del Norte Counties;

Santa Inez and Santa Lucia Mts., etc.) If the Alaskan record is

correct, a large region, including British Columbia, Alberta,

Montana, Idaho, etc., must be considered as possibly having once

contained, or even still contains Pleocoma. The chains of moun-

tains in this region (Rocky Mts., Bitter Root Mts., etc.) may well

have offered the migration lanes by which the present represen-

® For a discussion of the effect of this Pliocene archipelago upon the distri-

bution of California plants, cf : Mason, 1936, Cam. Inst. Wash., Publ. 416 :132.

Compare with Clark, 1921, Journal of Geol., 29 :612, and Dorf, 1933.

Cam. Inst. Wash., Publ. 412.47.

JULY, 1938]

LINSLEY— PLEOCOMA

tatives of the genus reached Utah. The widespread Pleistocene

glaciation may account for the absence of the genus from these

areas today, if indeed it is entirely absent, although, in view of the

tolerance of many existing species for cold and wet conditions,

one would expect the survival of some species on nunataks or

along the margin of the glaciated area. We must wait, therefore,

for more complete distributional information before any general

conclusions may be drawn on the basis of geological evidence.

The following is a summary of the distribution of Pleocoma

as known to the writer:

Alaska :

trifoliata : Seward.

Washington:

crinita: Klickitat Co. (Glenwood).

Oregon :

oregonensis: Sherman Co. (Wasco).

dubitalis dubitalis: Washington Co. (Dilley, Forest Grove) ;

Marion Co. (Salem); Benton Co. (Corvalis).

dubitalis leachi: Clackamas Co. (Colton, West Linn).

minor: Hood River Co. (Hood River).

simi: Douglas Co. (Cleveland).

carinata: Jackson Co. (Mt. McLoughlin) .

California:

shastensis: Siskiyou Co. (Pondosa) ; Shasta Co. (Redding).

sp. indet.: Shasta Co.

staff: “California Mer.”

hirticollis hirticollis: Nevada Co. (Nevada City) ; Yuba

Co. (Marysville area); Fresno Co. (San Joaquin^).

hirticollis vandykei: area about San Francisco Bay (So-

noma, Alameda, Santa Clara counties).

edwardsi: Nevada Co. (Washington) ; Yuba Co. (Browns-

ville).

fimbriata: El Dorado Co. (Placerville) .

blaisdelli: Calaveras Co. (Mokelumne Hill).

hoppingi: Tulare Co. (Kaweah) ; Fresno Co. (Millwood).

tularensis: Tulare, Fresno, Madera counties (foothills).

“fide Davis, 1936, Bull. So. Calif. Sci., 34 :26.

100

THE PAN-PACIFIC ENTOMOLOGIST [yoL. XIV. NO. 3

sp. indet.: Kern Co. (Kernville).

hirsuta: Los Angeles Co. (Sierra Madre Mts. near Lebec).

hadia: Los Angeles Co. (Mt. Wilson).

australis: Los Angeles Co. (Mt. Wilson) ; San Diego Co.

(Warner’s Hot Springs^^).

hicolor: San Bernardino Co. (San Bernardino Mts.).

puncticollis: Los Angeles Co. (Beverly Hills, Santa Mon-

ica) ; San Diego Co. (Oceanside, Del Mar, Julian);

Lower Calif. (Alamo).

sp. indet.: Santa Barbara Co. (Carpenteria) .

sp. indet.: Monterey Co. (Carmel, Soledad).

conjungens: Santa Cruz Co. (Santa Cruz).

hehrensi: Marin, Contra Costa, Alameda, Santa Clara, San

Mateo, San Francisco counties.

rickseckeri: Sonoma Co. (Sylvania).

sonomae: Sonoma Co.; Napa Co. (Mt. St. Helena).

Utah:

ulkei: “Utah”.

remota: “Utah”.

Bibliographical and Synonymical Catalogue

Genue Pleocoma LeConte

LeConte, 1856, Proc. Acad. Nat. Sci. Phil., 8:24.

LeConte, 1859, Proc. Acad. Nat. Sci. Phil., 11:71.

Schaufuss, 1870, Nunquam Otiosus, p. 50.

LeConte, 1874, Trans. Am. Ent. Soc., 5:81.

Osten-Sacken, 1874, Trans. Am. Ent. Soc., 5:84 (larva).

Gerstaecker, 1883, Stett. Ent. Zeit., 44:436.

Gerstaecker, 1888, Ent. Am., 3:202 (transl.).

Horn, 1888, Trans. Am. Ent. Soc., 15:1.

Horn, 1888, Ent. Am., 3:233.

Arrow, 1912, Coleopt. Catal., 43:4 (catalogue).

Davis, 1916, Bull. Brook. Ent. Soc., 11:11.

Leng, 1920, Cat. Col. No. Am., p. 252 (list).

Davis, 1935, Bull. So. Calif. Acad. Sci., 33:123, 34:4.

“ fide More, 1987, Oco. Pap. San Diego Soc. Nat. Hist., 2:83.

JULY, 1938]

LINSLEY— PLEOCOMA

101

australis Fall, 1911, Ent. News, 22:65, ^ 2.

Davis, 1918, Bull. Brook. Ent. Soc., 13:117 (habits).

Davis, 1935, Bull. So. Calif. Acad. Sci., 34:14, pi. 1, f. 4,

22, S 9.

badia Fall, 1917, Bull. Brook. Ent. Soc., 12:15,

Davis, 1918, Bull. Brook. Ent. Soc., 13:117 (habits).

Davis, 1935, Bull. So. Calif. Acad. Sci., 34:26, pi. 1, f. 1,

17, ^ 2.

behrensi Le Conte, 1874, Trans. Am. Ent. Soc., 5:83, $ 2.

Horn, 1888, Trans. Am. Ent. Soc., 15:6, pi. 1, f. 3, 4, ^ 2.

Horn, 1888, Ent. Am., 3:234, fig., S .

Rivers, 1889, Ent. Am., 5:17 (habits).

Rivers, 1890, Ent. Am., 6:70 (habits).

Linsley, 1935, Pan-Pac. Ent., 11:14 (habits),

von Blocker, 1935, The Corwior, 37:188 (habits).

Davis, 1935, Bull. So. Calif. Acad. Sci., 34:21, pi. 1, f. 14,

21 , ^ 2 .

bicolor Linsley, 1935, Pan-Pac. Ent., 11:11, $.

Davis, 1935, Bull. So. Calif. Acad. Sci., 34:15,

blaisdelli Linsley, 1938, Pan-Pac. Ent., 14:55,

conjungens Leach (nec Horn), 1933, Pan-Pac. Ent., 9:185.

carinata Linsley, 1938, Pan-Pac. Ent., 14:56, $ .

conjungens Horn, 1888, Trans. Am. Ent. Soc., 15:7, pi. 1, f.

10 ,

Horn, 1888, Ent. Am., 2:234, fig., $.

Davis, 1935, Bull. So. Calif. Acad. Sci., 34:28, pi. 1, f. 10 $ .

crinita Linsley, 1938, Pan-Pac. Ent., 14:53, $.

dubitalis Davis, 1935, Bull. So. Calif. Acad. Sci., 34:30, $,

staff var.

leachi Linsley, 1938, Pan-Pac. Ent., 14:52, $ 2, dubitalis

subsp.

edwardsi LeConte, 1874, Trans. Am. Ent. Soc., 5:83, $ .

Davis, 1935, Bull. So. Calif. Acad. Sci., 34:33, pi. 1, f.

10 ,

staff Horn (nec Schaufuss), 1888, Trans. Am. Ent. Soc.,

Horn, 1888, Ent. Am., 3:235, 15:9, pi. I, f. 12,

ulkei Leach (nec Horn), 1933, Pan-Pac. Ent., 9:184,

fimbriata LeConte, 1856, Proc. Acad. Nat. Sci. Phil., 8:25 $ .

LeConte, 1857, R. R. Surv. 47th Parallel, Zook, 9:40, pi. 1,

f. 13 (pars) .

102

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 3

Schaufuss, 1870, Nunquam Otiosus, p. 56, $ .

LeConte, 1874, Trans. Am. Ent. Soc., 5:82, S.

Horn, 1888, Trans. Am. Ent. Soc., 15:6, pi. 1, f. 1, 2, $ .

Horn, 1888, Ent. Am., 3:234, fig., S.

Linsley, 1935, Pan-Pac. Ent., 11:13, fig., S.

hirsuta Davis, 1934, Proc. Ent. Soc. Wash., 36:38, $ , conjungens

var.

Davis, 1935, Bull. So. Calif. Acad. Sci., 34:29, S, cdn-

jungens var.

hirticollis Schaufuss, 1870, Nunquam Otiosus, p. 58,

LeConte, 1874, Trans. Am. Ent. Soc., 5 :83, $ 9 .

Horn, 1888, Trans. Am. Ent. Soc., 15:8, pi. I, f, 7-9, $ 9.

Horn, 1888, Ent. Am., 3:234, fig.,

Davis, 1935, Bull. So. Calif. Acad. Sci., 34:23, pi. 1, f. 12,

23, ^ 9 .

fimbriata LeConte, 1857, R. R. Surv. 47th Parallel. Zool.

9:40 (f.n.), pi. 1, f. 13 (pars).

vandykei Linsley, 1938, Pan-Pac. Ent., 14:56,^, hiricollis

subsp.

hoppingi Fall, 1906, Ent. News, 17:394, $ 9.

Davis, 1935, Bull. So. Calif. Acad. Sci., 34:25, pi. 1, f. 6,

18, 24, ^9.

minor Linsley, 1938, Pan-Pac. Ent., 14:52,

oregonensis Leach, 1933, Pan-Pac. Ent., 9:186, $ .

Davis, 1935, Bull. So. Calif. Acad. Sci., 34:17, $ .

remota Davis, 1934, Proc. Ent. Soc. Wash., 36:23, $ .

Davis, 1935, Bull. So. Calif. Acad. Sci., 34:8, pi. 1, f. 9, $ .

hehrensi Smith (nec LeConte), 1885, Proc. Ent. Soc. Wash.,

1:33.

rickseckeri Horn, 1888, Trans. Am. Ent. Soc., 15:5, pi. 1, f.

5, 6, ^ 9 .

Horn, 1888, Ent. Am., 3 :234, fig., $ .

Davis, 1935, Bull. So. Calif. Acad. Sci., 34:12, pi. 1, f. 7,

16, ^ 9 .

puncticollis Rivers, 1889, Ent. Am., 5:17, $ .

Davis, 1935, Bull. So. Calif. Acad. Sci., 34:11, pi. 1, f. 3, $ .

shastensis Van Dyke, 1933, Pan-Pac. Ent., 9 :183, $ .

Linsley, 1935, Pan-Pac. Ent., 11:15, var. $.

Davis, 1935, Bull. So. Calif. Acad. Sci., 34:10, pi. 1, f. 15, $ .

JULY, 1938]

LINSLEY— PLEOCOMA

103

sonomae Linsley, 1935, Pan-Pac. Ent., 11:12, fig., $ .

Davis, 1935, Bull. So. Calif. Acad. Sci., 34:23, $ .

staff Schaufuss, 1870, Nunquam Otiosus, p. 52, $ .

Sharp, 1875, Ent. Mo. Mag., 11:206.

Ohaus, 1909, Deutsche Ent. Zeitschr., p. 430, fig., $ .

104

THE PAN-PACIFIC ENTOMOLOGIST [yoL, XIV. NO. 3

Davis, 1935, Bull. So. Calif. Acad. Sci., 34:31, S.

adjuvans Crotch, 1874, Check-list, p. 58.

trifoliata Linsley, 1938, Pan-Pac. Ent., 14:57, $.

tularensis Leach, 1933, Pan-Pac. Ent., 9:186, S .

Linsley, 1935, Pan-Pac. Ent., 11:13, fig., S .

Davis, 1935, Bull. So. Calif. Acad. Sci., 34:19, S, fimbriata

var.

fimbriata Davis (nec LeConte), 1935, Bull. So. Calif. Acad.

Sci., 34:17, pi. 1, f. 11,

simi Davis, 1934, Proc. Ent. Soc. Wash., 36:24, 5.

Davis, 1935, Bull. So. Calif. Acad. Sci., 34:15, pi. 1, f. 5, $ .

ulkei Horn, 1888, Trans. Am. Ent. Soc., 15:9, pi. 1, f. 11, 5 .

Horn, 1888, Ent. Am., 3:234, fig., 5.

Davis, 1935, Bull. So. Calif . Acad. Sci., 34:34, pi. 1, f. 8, $ .

The Insect Types From the Early Expeditions of the

California Academy of Sciences in Lower California

The recent statement by Mr. J. Bequaert, in his excellent

paper on Eumenes\ that the type of Eumenes pedalis Fox was

destroyed, emphasizes a widespread belief that the insect types

from the expeditions of the California Academy of Sciences to

Lower California in 1889 to 1894 were lost in the San Fran-

cisco fire of 1906. Actually the types of the Hymenoptera

described by Fox, Ashmead and Pergande, the Horn types of

Coleoptera, and the Uhler types of Hemiptera were saved through

the efforts of Miss Alice Eastwood, Curator of the Department

of Botany. Many of these speeies are represented in other eol-

lections by “eotypes,” but the actual specimens which these

authors considered as the types, including those which were

uniques, are still in the collection of the California Academy of

Sciences as stated by the several authors in the remarks prefa-

tory to their reports. This is more fully explained by Gustav

Eisen in his Historical Sketch of these expeditions (Proc. Calif.

Acad. Sci., Ser. 2, vol. V, page 765, 1895). — E. Gorton Linsley.

^ Bequaert, J., 1938. The three Emnenes of Canada and the Northeastern

United) States, with notes on other North American species. Bull. Brooklyn Ent.

Soc., 33:59-70.

LINSLEY— CERAMBYCID^

105

JULY, 1938]

SYNONYMICAL NOTES ON SOME NORTH

AMERICAN CERAMBYCID^

(Coleoptera)

BY E. GORTON LINSLEY

University of California

The following synonymical notes have, with a few excep-

tions, resulted from the examination of certain types of Ceram-

bycidae in the collection of the United States National Museum,

Washington, D. C.

Prionus californicus Motschulsky

calif ornicus Motschulsky, 1845, Bull. Soc. Nat. Moscou, 1 :89.

crassicornis LeConte, 1852, Jour. Acad. Nat. Sci. Phila., (2)

2:108.

ineptis Casey, 1912, Mem. Coleopt., 3:242, n. syn.

humeralis Casey, 1924, Mem. Coleopt., 11:216, n. syn.

Prionus ineptis Casey is listed in the Leng Catalogue (1920:

266) as a synonym of P. curvatus LeConte, but the type speci-

men appears rather to belong to californicus. P. humeralis is

a normal male of californicus.

Opsimus quadrilineatus Mannerheim

quadrilineatus Mannerheim, 1843, Bull. Soc. Nat. Moscou,

16:305.

hiplectralis Casey, 1924, Mem. Coleopt., 11:229, n. syn.

Opsimus hiplectralis Casey is conspecific with 0. quadri-

lineatus Mannerheim.

Spondylus upiformis Mannerheim

upiformis Mannerheim, 1843, Bull. Soc. Nat. Moscou, 16:304.

laticeps LeConte, 1850, in: Agassiz, Lake Superior, 233.

collaris Casey, 1912, Mem. Coleopt., 3:218, n. syn.

rohustula Casey, 1912, Mem. Coleopt., 3:219, n. syn.

suhpuhescens Casey, 1912, Mem. Coleopt., 3 :219, n. syn.

hasalis Casey, 1912, Mem. Coleopt., 3:220, n. syn.

parva Casey, 1924, Mem. Coleopt., 11:226, n. syn.

106

THE PAN-PACIFIC ENTOMOLOGIST [yoL. XIV. NO. 3

This common western species is extremely variable in size,

shape, an,d punctation, but in so far as is known to the writer

none of these variations exhibit any geographical or ecological

segregation. Almost any spring flight where the species is com-

mon will reveal all of the forms described by Casey and many

more which were unknown to him.

OSMIDUS GUTTATUS LeConte

guttatus LeConte, 1873, Smithson. Misc. Coll., XI, Art. 264,

p. 178.

ohscurella Casey, 1924, Mem. Coleopt., 11:255, n. syn.

vestitus Casey, 1924, Mem. Coleopt., 11:255, n. syn.

0. ohscurella and 0. vestitus Casey are female and male

respectively of Osmidus guttatus LeConte.

Brothylus gemmulatus LeConte

gemmulatus LeConte, 1859, Proc. Acad. Nat. Sci. Phila.,

1859:80.

consors Casey, 1924, Mem. Coleopt., 11:254, n. syn.

longicollis Casey, 1924, Mem. Coleopt., 11:254, n. syn.

Brothylus castaneus Casey was not examined but B. consors

and B. longicollis both represent B. gemmulatus LeConte. Ap-

parently Col. Casey was misled by the sexual dimorphism ex-

hibited by the latter species. Although the female has a prominent

lateral pronotal tubercle this is completely lacking in the male,

as in both sexes of Brothylus cons per sus LeConte.

Callimellum ruficolle LeConte

ruficolle LeConte, 1873, Smithson. Misc. Coll., XI, Art. 264,

p. 192. (Pilema.)

longicollis Casey, 1912, Mem. Coleopt., 3:310 (Callimus) ,

n. syn.

C. longicollis Casey is conspecific with ruficolle LeConte. C.

opacipennis, although agreeing structurally with ruficolle, has

nearly black elytra. It is a form common in southern California

and possibly represents a geographic race of the LeConte species.

Callimellum cyanipenne LeConte

cyanipenne LeConte, 1873, Smithson. Misc. Coll. XI, Art 264,

p. 192, {Pilema).

JULY, 1938]

LINSLEY— CERAMBYCID^

107

variipes Casey, 1912, Mem. Coleopt., 3:311 {Callimus), n.

syn.

dehiscens Casey, 1912, Mem. Coleopt., 3:312 {Callimus) , n.

syn.

Casey had a very small series of his species of Callimellum,

three of which were based upon uniques. The shape of the elytral

apices is extremely variable in this species and forms an unre-

liable specific character. The series of specimens in the Blaisdell

collection (from Mokelumne Hill, Calif.) from which Col. Casey

received his unique type of variipes exhibits both of the varia-

tions to which the latter author gave specific names.

PoECILOBRIUM CHALYBEUM LeConte

chalybeum LeConte, 1873, Smithson. Misc. Coll. XI, Art. 264,

p. 189, {Callimus) .

rugosipenne Linell, 1896, Proc. U. S. National Museum, 19:

395, n. syn.

minutum Casey, 1924, Mem. Coleopt., 11:261, n. syn.

gibsoni Hopping, 1931, Can. Ent., 53:234, n. syn.

This species is extremely variable in size, color, and puncta-

tion, and none of these characters show any geographical or

ecological correlation in the series at hand. The elytral punc-

tures vary from confluent or adjoining to from five to six punc-

ture widths apart and from shallow and feeble to deep and

distinct, in specimens beaten from the same branches. The ante-

rior femora may be either red or black in the female but are

black in all of the males examined. The species is not uncommon

and has been collected on Ceanothus, Rhus, Quercus, Acer, and

Prunus. Two hundred and thirty-eight specimens are before me

ranging from southern California to British Columbia and Idaho.

Genus Strang ALIA Serville

Strangalia Serville, 1835, Ann. Soc. Ent. France, 4:220.

Lacordaire, 1869, Genera Coleopt., 9:328.

Thompson, 1864, Systema Ceramb., 144.

LeConte, 1873, Smithson. Misc. Coll., XI, Art. 265:328.

LeConte and Horn, 1883, Smithson. Misc. Coll., XXVI,

Art. 507, p. 313.

Leng, 1890, Ent. Amer., 6:157.

108

THE PAN-PACIFIC ENTOMOLOGIST [yoL. XIV. NO. 3

Strangalina Aurivillius, 1912, Coleopt. Catal., 39:228.

Boppe, 1921, Genera Ins., Fasc. 178:24, 102.

Swaine and Hopping, 1928, Nat. Mus. Can., Bull. 52:16.

Hopping, 1937, Nat. Mus. Can., Bull. 85:23.

Ophistomis, Casey, 1913, Mem. Coleopt. 4:248, 275.

Serville included in his genus Strangalia only two species,

Leptura luteicornis Fabricius and Leptura calcarata Fabricius.

Thomson (1864, Systema Ceramb., 141) designated the first of

these as the genotype, and the genus was thus understood by

Lacordaire, LeConte, Horn, Leng, and other early writers. The

selections of Leptura elongata DeCeer by Westwood (1840, Intro.

Mod. Class. Ins., append., 1:41) and L. rubra Linnaeus by Des-

Gozis (1886, L’Espece Typique, 33) as genotypes are both invalid

since neither species was included originally by Serville. The

designation of Leptura attenuata Linnaeus as the type of Stran-

galina Aurivellius (Swaine and Hopping, 1928:13) makes it

a synonym of Strangalia, since luteicornis Fab. and attenuata

Linn, are at present considered congeneric.

Genus Anthophylax LeConte

Anthophylax LeConte, 1850, Jour. Acad. Nat. Sci. Phila., (2)

1:326.

Thomson, 1860, Class. Ceramb., 156.

Lacordaire, 1869, Genera Coleopt., 8:443.

LeConte, 1873, Smithson. Misc. Coll., XI, Art. 265:328.

LeConte and Horn, 1883, Smithson. Misc. Coll., XXVI,

Art. 507, p. 313.

Leng, 1890, Ent. Amer., 6:65.

Boppe, 1922, Genera Ins., 178:21, 67.

Anthophilax LeConte, 1850, in: Agassiz, Lake Superior, 236.

Swaine and Hopping, 1928, Nat. Mus. Can., Bull. 52:14.

Hopping, 1937, Nat. Mus. Can., Bull. 85:14.

Genotype: Anthophylax viridis LeConte (Thomson, 1864:

141).

The original spelling of this generic name was Anthophylax

and the original citation should be that given above. On the

statement of LeConte (1851, Jour. Acad. Nat. Sci. Phila., (2)

2:100) the original citations for the following Lepturini should

JULY, 1938]

LINSLE Y— CER AMB YCID^

109

be to his paper in the Jour. Acad. Nat. Sci. Phila., 1850, rather

than to Agassiz, Lake Superior, which appeared later: Argaleus

n. gen. (319), A. nitens n. sp. 319), Evodinus n. gen. (325),

Acmceops n. gen. (321), Anthophylax n. gen. (326), A. viridis

n. sp. (326), Leptura tibialis n. sp. (339).

Genus Acm^ops LeConte

This genus was made masculine by its author, not feminine

as employed by recent workers.

Genus Pachyta Zetterstedt

Pachyta Zetterstedt, 1828, Fauna Insecta Lapponica, 1:376.

Genotype: Leptura 4-^o,(^ulata Linn. (Thomson, 1864).

This genus should be attributed to Zetterstedt, not Dejean. The

first valid genotype designation known to the writer is that of

Thomson. The selection of Leptura 8-maculata Fabricius by West-

wood (1840) is invalid as the species was not among those orig-

inally included by Zetterstedt.

Genus Toxotus Zetterstedt

Toxotus Zetterstedt, 1828, Fauna Insecta Lapponica, 1:374.

Genotype: Cerambyx meridianus Linn. (Westwood, 1840).

This genus should likewise be attributed to Zetterstedt. Zetter-

stedt included two species, Cerambyx cursor Linnaeus and C.

meridianus Linnaeus. The selection of the former as the. geno-

type by Thomson (1864) is invalid because of the earlier desig-

nation by Westwood.

Phymatodes lecontei Linsley, new name

Callidium obscurum LeConte, 1859 (nee Callidium obscurum

Fabricius, 1787).

? Phymatodes grandis Casey, 1912, Mem. Coleopt., 3:277.

LeConte’s name for our common Phymatodes is pre-occupied.

Casey’s P. grandis may eventually prove to be the same as Le-

Conte’s obscurum and, if so, will take precedence over the name

proposed above.

Genus Cyllene Newman

The author of this genus made it feminine, not masculine as

employed, at least in part, by recent writers.

110

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO, 3

A NEW SPECIES OF DONACIA FROM WASHINGTON

BY MELVILLE H. HATCH

University of Washington

Donacia (Plateumaris) idola Hatch, n. sp.

Length: Male 7.0-7.5 mm,; female 7.5-8.5 mm. Color metallic

seneous, viridescent, or purpurescent; the head, antennae, and ven-

tral surface densely opaquely punctate; the tibiae, the tarsi, the

bases of the femora and the basal portions of antennal segments

II to VII or VIII variably, and at times very obscurely, tinged

with rufous. Head with short tempora behind the eyes, thence

strongly constricted to form a “neck.” Antennal segments IV

to XI somewhat as in pusilla Say, not elongate as in longicollis

Schaeffer, Antennae extending about four segments beyond the

base of the pronotum, a little longer in the male. Pronotum as

long as wide, the anterior angles prominent, the lateral tubercle

prominent and distinctly separated from the disc of the pro-

notum by an arcuate impression, the surface shining, finely punc-

tate and rugose especially along the median line, which is strongly

impressed from about the apical fifth or less to a punctiform

impression at the basal fourth, behind which it is continued as

a Carina. Extending posterio-obliquely laterad from the puncti-

form impression at the basal fourth of the median line is a deeply

impressed transverse line, behind which the surface of the pro-

notum is somewhat smoother and more shining. Elytra shining;

ante-median impression distinct; serial punctures moderate, finer

towards apex, the intervals transversely rugose and finely sparsely

but somewhat variably punctate. The side pieces of the pro-

sternum coarsely strigate, somewhat more finely so anteriorly ; the

rest of the ventral surface and legs set with cinereous short

pubescence; posteriori femora extending to the apex of the third

ventral segment, moderately clavate, narrower at base than at

apex, set with a moderate sized tooth on its lower surf ace towards

the apex. Abdomen with first ventral segment evidently but

vaguely impressed at middle in male or very vaguely impressed

in female; the last ventral segment impressed at middle of apex

in male or unmodified in female; the last dorsal segment trun-

cately bisinuate in male or obtusely rounded in female; the lower

vaginal plate in the female acutely triangularly produced, the

sides finely serrulate.

Type male, allotype female, and 5 paratypes: Chase Lake,

Snohomish Co., Wash., May 9, 1934, M. H. Hatch; 45 paratypes,

same locality as type but on various dates: May 14, 1930; April

27, 1931; April 26, 1933; May 9, 1934; April, 1936; April 29,

1936; April 26, 1938. The type and allotype are aeneo-pur-

JULY, 1938]

HATCH— A NEW DONACIA

111

purescent in color. Type material in collection of author with

two paratypes in collection of Mr. Albert R. Mead.

This species may be distinguished from most of the other

Nearctic species of its subgenus by the deeply impressed trans-

verse basal pronotal impression with a short median longi-

tudinal Carina just behind it. By careful attention to the

extremely obscure rufous clouding at the base of the meta-

femora, I run this species in Schaeffer’s key (Brooklyn Mus.

Sci. Bull., Ill, 1925, pp. 123-125, 152-154) to dubia Schaeffer,

from which, in addition to the characters above cited, it may

apparently be distinguished by the darker antennas and legs,

the somewhat more evidently punctate pronotum and the well

developed tooth on the metafemora. The posterior margin of

the last dorsal abdominal segment in the male is bisinuate,

whereas Schaeffer (l.c., p. 153) describes the condition in. dubia

as “truncate.” Among the other species of this subgenus in

which Schaeffer describes this condition, always or at times, as

“truncate” in the male {sulcicollis, flavipes, notmani, metallica,

wallisi, dubia, neomexicana and longicollis) . I find that flavipes

and metallica exhibit, at least at times, the same sort of a bisi-

nuation of the last dorsal abdominal segment that I detect in

idola, so that the complete accuracy of Schaeffer’s descriptions

in this particular cannot be relied upon. This feature will serve,

however, to distinguish idola from longicollis, in which in my

specimens the last dorsal segment in the male is really feebly

emarginate.

Chase Lake is a small bog lake located about the center of

Section 30, Township 27 North, Range 4 East, in Snohomish

County, Washington, about two miles southeast of Edmonds and

«r

about seven miles north of the northern city limits of Seattle.

It is the unnamed body of water that is mapped in this location

on the 1/125,000 scale Seattle sheet of the United States Geo-

logical Survey topographic map. The lake is bordered by a

wide zone of red sphagnum which serves as the habitat of

one species of fly {Chrysogaster nigrivittata Loew*, family

Syrphidce) , and three species of beetles in three different fam-

ilies, all with the same bright metallic bodies more or less

matching the color of the sphagnum. The three beetles all

proved to be undescribed species. The first, a carabid, Platynus

♦Determined by Mr. Randall Latta.

112

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 3

helleri, was described by me in the Pan-Pacific Entomologist

in 1933 (Vol. IX, pp. 120-121). The second, a species of Eanus

of the family Elateridae, isi being described in the same journal

by my friend, Mr. M. C. Lane. The third, a chrysomelid, is

described above. Two of these species, the Platynus and the

Eanus, have been taken on a similar sphagnum mat of a much

larger lake. Lake Marie, about two miles east of Fall City in

King County, Washington, and the Platynus has been recorded

from sphagnum at Steelhead, near Mission City, in extreme

southwestern British Columbia (Leech, Pan-Pac. Ent. XI, 1935,

p. 122).

While the modem biologist is much more cautious about

“explaining” such a phenomenon than his nineteenth century

predecessor, the correlation between the color of the insects

and the color of the sphagnum is not, in all probability, a pure

coincidence. While each of the three beetles is not without

metallic allies — this is especially true of Donacia, where a great

many of the species are metallic — this simply means that stocks

with such color potentialities were available for this particular

evolution. The fact that each of the three beetles in three fam-

ilies is a peculiar species shows that the red sphagnum metallic

beetle association is long established. There is probably a casual

relationship involved, though its exact nature is quite beyond

us at present.

A Method of Collecting Amphizoa

Along Swamp Creek, a small stream six to thirty feet in

width in the level country just north of Seattle, Washington,

specimens of Amphizoa striata Van Dyke were taken by partially

submerging and securing in place pitted water soaked cedar logs

in shaded portions of the creek where the stream was narrow and

the current was swift. The beetles were found in the cracka and

crevices on the underside of the logs. Collections were made at

intervals of a week or ten days in June and July of 1937 and close

to a hundred specimens were secured. — Daniel E. Bonnell and

Joseph Bruzas, Department of Zoology, University of Wash-

ington.

JULY, 1938]

MEAD— DONACIA

113

NEW SUBSPECIES AND NOTES ON DONACIA WITH KEY

TO THE SPECIES OF THE PACIFIC STATES

(Coleoptera, Chrysomelidae)

BY ALBERT R. MEAD

University of California, Berkeley, California

Donacia subtilis magistrigata Mead, new subspecies

Strongly dorso-ventrally flattened, subparallel, elongate,

shining cupreous; antennae, head, and legs concolorous and

pubescent.

Male. Head slightly constricted behind eyes, finely punctate

with a deep median sulcus ; eyes large and only moderately promi-

nent; antennae extending to basal one-third of elytra. Pronotum at

apex about as wide as long, converging to posterior angles which

are feeble; anterior angles distinct but not prominent; lateral

tubercles depressed and indistinct; disc densely and coarsely punc-

tate-rugose. Elytra heavily strigate, the strigae becoming more

dense toward apices which are truncate; a limited smooth area

approximate to scutellum ; punctuation rather coarse becoming

finer at apices; anterior impressions feeble, posterior impressions

faint; coarse transverse rugae sparse, but fairly abundant in region

of anterior impressions. Venter finely punctate with pubescence

white and moderately dense; prosternal epistema with anterio-

dorsal area pubescent, posterior portion glabrous and coarsely

strigate. Metathoracic femur reaching to apex of third sternite;

moderately clavate with a small acute tooth. Last abdominal ter-

gite truncate; last sternite with an apical depression. Length 8.5

mm., breadth 3.0 mm.

Female. Larger and stouter than the male; antennae slightly

shorter and stouter. Last abdominal tergite feebly emarginate;

last sternite sub-angulate at apex. Length 11.0 mm., breadth 3.5

mm.

Holotype, male (No. 4689 Cal. Acad. Sci.), allotype, female

(No. 4690 Cal. Acad. Sci.) , and two paratypes collected at Clarks-

burg, Yolo County, California. The holotype and the two para-

types were collected by A. T. McClay on June 4, 1931 ; the allo-

type was collected by Mont A. Cazier on July 26, 1933; seven

other paratypes were collected at Tejon Canyon (Kem Co.),

Sebastopol (Sonoma Co.), Davis (Yolo Co.), Alturas (Modoc

Co.), and Lakeport (Lake Co.) , California. Four paratypes are de-

posited in the collection of the author, three in the collection of

114

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 3

A. T. McClay, and one paratype each in the collections of L. J.

Muchmore (Los Angeles Museum), and B. E. White.

Donacia suhtilis magistrigata might he confused with distincta

LeConte or distincta occidentalis, the species described below,

because of the densely strigate elytra, but can be distinguished in

that the head is only slightly narrowed behind the eyes, the

median line of the pronotum is usually absent, and there are

transverse rugae on the elytral disc. This subspecies can readily

be distinguished from the typical suhtilis Kunze by the fine and

dense strigate-rugose sculpturing on the elytra, by the meta-

thoracic femora which are less clavate; and by the antennae which

are stouter. The last abdominal tergite of the female is feebly

emarginate while that of suhtilis is broadly rounded.

Charles Schaeffer reports in his revision^ that H. F. Wickham

collected suhtilis as far west as Greeley, Colorado, and S. Beller

and M. H. Hatch reporC that it has been found in Seattle, Wash-

ington; but they do not list it for Oregon®. This is undoubtedly

the first record for California. Mr. Hatch sent to the writer the

three specimens of suhtilis which were collected in Seattle, Wash-

ington; but on examination only one, a male, showed an affinity

toward the new subspecies. The distinguishing characters were

intermediate in this specimen and therefore not typical. Thus

magistrigata seems to be limited to California.

Donacia distincta occidentalis Mead, new subspecies

Feebly depressed, elongate, dull metallic cupreous, antennae

black, legs concolorous; head, antennae, legs, and venter punc-

tate, pubescent.

Male. Head small, rather strongly constricted behind eyes;

punctuation moderately dense becoming finer and more dense poste-

riorly; eyes small and prominent; median sulcus narrow and deep;

antennae about half the length of the body. Pronotum a little wider

at apex than long, converging slightly to a well defined posterior

marginal carina which is produced laterally to form the feeble

posterior angles; anterior angles oblique and only slightly distinct;

lateral tubercles well defined and separated from the disc by a

moderately deep arcuate groove; lateral margin sinuate posterior

to tubercle; median line distinct; punctuation coarse and sparse

1 Bkln. Mus. Sci. Bull., Ill, 1926, pg. 106,

^ Univ. Wash. Publ. Biol., I, 1932, pg. 82.

^ Pan-Pac. Ent., VIII, 1932, pp. 102-108.

JULY, 1938]

MEAD— DONACIA

115

with few intermittent fine punctures; disc comparatively smooth

becoming' densely rugose laterally; tubercles rugose. Elytra elon-

gate; apices truncate; surface very finely and evenly strigate be-

coming uniformly more dense at apices ; a small area in the baso-

sutural region smooth and shining; punctuation moderately fine

becoming finer at apices; anterior impressions distinct, arcuately

produced anteriorly to humeri; posterior impressions equally dis-

tinct, produced posteriorly, two intervals wide, almost to apices.

Venter finely and densely punctulate; pubescence fine and moder-

ately dense; only anterio-dorsal one-fourth of prosternal epister-

num pubescent, remaining portion glabrous and coarsely strigate.

Metathoracic femur reaching to apex of third sternite; clavate,

with a small and obscure tooth. Last abdominal tergite broadly

emarginate; last sternite apically depressed. Length 7.5 mm.,

breadth 2.5 mm.

Female. Larger and stouter than male; pronotum slightly

wider; antenns shorter and stouter. Last abdominal tergite nar-

rowly emarginate; last sternite broadly rounded. Length 9.0 mm.,

breadth 3.5 mm.

Holotype, male (No. 4691, Cal. Acad. Sci.), allotype, female

(No. 4692, Cal. Acad. Sci.), and eight paratypes all collected by

A. T. McClay in Luther’s Pass, near Meyers, El Dorado Co., Cali-

fornia, on June 15, 1930. Five paratypes (4^, 1$) are in the

collection of A, T. McClay and three {2S , 1 $ ) have been de-

posited in the author’s collection. Two other specimens are at

hand one of which was collected at Pothole meadows, Yosemite,

California, on June 2, 1932, and the other at Facht, Lassen

County, California, on June 5, 1921; but these are not typical as

will be pointed out later.

Donacia distincta occidentalis can be distinguished from sub-

tilis magistrigata Mead and allied to distincta LeConte by the

following characters: the head is smaller and more strongly con-

stricted behind the eyes, the eyes are smaller, the median line of

the pronotum is always present, the prothorax is wider, the

strigate sculpturing of the elytra is much finer, and transverse

rugae on the elytral discs are absent. This subspecies, however,

differs from the typical distincta in that it is smaller, more slen-

der, and more convex; the antennae are shorter and stouter; the

eyes are less prominent; the metathoracic femur is only slightly

clavate and has a small and obscure tooth whereas that of dis-

tincta is more strongly clavate with a moderately large and acute

tooth; and the apical third of the elytra as seen from a lateral

116

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 3

view is not depressed as in distincta but curved ventra,d as in

tuhercidifrons SchfFr.

Typical distincta has not been reported west of Edmonton,

Alberta*, but there is a single specimen in the author’s collection

from Cranbrook, B. C., which with the two atypical specimens

previously mentioned make a series that connects the typical

distincta of the Great Lakes Region with the subspecies occi-

dentalis in California. This series shows a degree of variation

between each specimen which is almost correlated with the distri-

bution. This is particularly noticeable in the size and shape of

the insect, the type of pronotum, and in the armature of the

metathoracic femur. The specimen collected in Yosemite is more

depressed as in distincta but the size and pronotum are similar to

occidentalis, whereas the armature of the femora is exactly inter-

mediate, However, the specimen collected at Facht is more nearly

like occidentalis in that the only atypical structure is the prono-

tum which is more nearly like distincta. The type series of ten

shows a remarkable constancy in all structures especially in the

presence of the definite basal carina of the pronotum and the

obscure tooth of the metathoracic femur. A larger series of these

two atypical forms may prove this subspecies to be more variable

than the type series indicates.

DoNACIA E MARGIN at a PACIFICA Schffr.

Schaeffer described, in his revision, a subspecies of emarg-

nata from California which he called pad flea, and according to

the localities cited in this revision, this subspecies is limited to

California. He observed specimens from Oregon and Washing-

ton ; but these were identified as true emarginata. It is the opin-

ion of the writer that Schaeffer had access to a too limited amount

of California material and described this subspecies on the dif-

ferences present in the series which he had, which differences be-

come less significant as a larger series is examined. The dis-

tinguishing characters that he used arei so variable that at most

this can only be considered a phase of emarginata and should

not have any taxonomic standing. It is for this reason that

pacifica has not been included in the key.

* Bkln. Mus. Sci. Bull., Ill, 1926, pg, 103.

JULY, 1938]

MEAD— DONACIA

117

Donacia germari flavipennis Mannerheim

On October 15, 1934, J. T. Howell and L. S. Rose collected a

large series of germari between Siltcoos Lake and Florence Lake

in Lane County, Oregon, This series, which has been deposited

in the collection of the California Academy of Sciences, shows all

gradations from the typical metallic germari to the entirely fla-

vous form. According to Schaeffer, LeConte had two specimens

of typical germari and two of flavipennis which were presented

to him by Mannerheim, all four of which were collected in the

same place, viz,, Sitka, Alaska, It seems quite obvious on the

basis of this evidence that flavipennis can no longer stand as a

valid subspecies and must be considered as a color phase which is

found in north-western populations of germari. To be sure,

Schaeffer restored flavipennis as a “Western color variety of

germari” ; but he used the term “variety” for all subspecies which

he described and it does not seem reasonable to believe that he

intended any exception here. Further, it is listed in Leng’s cata-

logue as a subspecies and should thus be corrected, Flavous

forms appear frequently in a number of species of Donacia,

s, str., for example hirticollis, piscatrix, palmata, cincticornis,

etc., and it does not necessarily follow that merely because fla-

vous forms are found in no other species of Plateumaris, that this

particular one should receive subspecific standing,

Donacia fulvipes Lacordaire

It is quite difi&cult to distinguish fulvipes from wallisi Schffr.

if only one of the species is at hand; but an examination of a

large series of these two confusing species has shown that the

metathoracic femur of fulvipes is like that of pusilla in shape

and is definitely bicolored whereas the metathoracic femur of

wallisi is more nearly like that of germari since it is almost

as wide at the base as at apex, and is entirely rufous. The

antennae of wallisi are bicolored and distinctly annulate while

those of fulvipes are entirely metallic except for the outer three

to five segments which are rufous. There is also considerable

difference in the shape of the upper and lower vaginal plates and

the last abdominal tergite in the females of the two species as

illustrated in the accompanying figures.

118

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 3

Figure 1, fulvipes; figure 2, wallisi.

Key to the species of Donacia of the Pacific S'

ATES

1. Sutural bead of elytra approximate to sutural margin through-

out entire length subg. Donacia 2

Sutural bead and sutural margin of elytra divergent at apical

sixth subg. Plateiumaris 9

2. Entire dorsum pubescent, elytral epiplura not limited dorsally

by an elevated ridge pubescens Lee.

-. Elytra glabrous, epiplura limited dorsally by a distinct ele-

vated ridge 3

3. Pronotum finely pubescent ..hirticollis Kirby

Pronotum glabrous 4

4. Metathoracic femora extending to elytral apices, pronotal

punctuation fine and sparse 5

Metathoracic femora never extending to elytral apices, pro-

notal punctuation coarse 6

5. Dorsum metallic blue, strial punctuation moderately coarse,

punctures often greenish, median basal triangulate excava-

tion usually indistinct proximo, Kirby

-. Dorsum metallic green and/or cupreous, strial punctuation

coarse, basal triangulate excavation deep

proximo calif ornica Lee.

6. Elytra with transverse rugae, median line of pronotum usually

absent, head only slightly constricted; behind eyes, eyes large

and moderately prominent 7

Elytra without transverse rugae, median line of pronotum

always present, head strongly constricted behind eyes, eyes

small and prominent 8

7. Abundant coarse transverse rugae on elytra, antennae slender,

metathoracic femora clavate subtilis Kunze

-. Fine and dense strigate-rugous sculpturing on elytra, coarse

transverse rugae sparse, antennae stouter, metathoracic femora

less clavate subtilis magistrigata Mead

JULY, 1938]

MEAD— DONACIA

119

8. Metathoracic femur clavate with a moderately large and acute

tooth, apical third of elytra depressed .....distincta Lee.

Metathoracic femur less clavate with a very small obscure

tooth, apical third of elytra curved ventrad

distincta occidentalis Mead

9. Metathoracic femora entirely metallic, last abdominal tergite

deeply emarginate emarginata Kirby

Metathoracic femora bicolored or entirely rufous; or if

metallic, the last abdominal tergite truncate 10

10. Prosternal episterna coarsely strigate 11

— . Prosternal episterna punctate rugose or at most only pos-

terior half finely strigate 13

11. Prothorax longer than wide, usually much more so, median

line usually present, rarely a sulcus, prothoracic tubercles

elongate, metathoracic femora distinctly bicolored

longicollis Schffr.

— . Prothorax subquadrate with a deep median sulcus, pro-

thoracic tubercles not elongate, metathoracic femora largely

metallic with the small rufous area at base often faint 12

12. Antennas metallic, pronotal sub-basal transverse impression

deep, median line produced as a carina posterior to the trans-

verse impression, metathoracic femora clavate idola Hatch

— . Antennas bicolored, pronotal sub-basal transverse impression

distinct but not deep, sub-basal carina absent, metathoracic

femora incrassate dubia Schffr.

13. Second and third segments of antennae small equal or sub-

equal, pronotum densely and coarsely punctate, metathoracic

femur smaller at base than at apex pusilla pyritosa Lee.

— . Third antennal segment a third longer than second and equal

or subequal to fourth, pronotum alutaceous and usually finely

punctate, metathoracic femur as wide or wider at base than

at apex germari Mann.

Following is a list of the species of Donacia found in each

of the three Pacific states:

California: hirticollis, puhescens, proxima calif ornica, sub-

tilis magistrigata, distincta occidentalis, emarginata, ger-

mari, pusilla pyritosa, longicollis.

Oregon: hirticollis, puhescens, proxima californica, emargi-

nata, germari, pusilla pyritosa, longicollis.

120

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 3

Washington: hirticollis, pubescens, proxima, proxima cali-

fornica, subtilis, emarginata, germari, pusilla pyritosa,

longicollis, dubia, idola.

The writer wishes to extend most sincere thanks to E. C. Van

Dyke for his untiring efforts to assist in the preparation of this

paper, to C. A. Frost and M. H. Hatch who so willingly loaned

specimens upon request, and to A. T. McClay who so generously

supplied the greater share of the type material. The Charles

W. Leng collection of Chrysomelidae, purchased by the writer

in 1936, formed the basis for this paper.

Note on the Blattariae or Cockroaches of

Western Washington

The only species native to western Washington appears to

be CrypiocerciLS punctiilatm Scudder, which Hebard (Mem.

Amer. Ent. Soc. No. 2, 1917, p. 258) records from Chehalis. I

have seen no specimens from the state, but have taken a nice

series under bark of logs in Oregon Caves National Monument

in southwestern Oregon.

Three introduced species occur: Blatella germanica L. (the

common cockroach or croton bug) common in the biological

laboratory building at the University of Washington in Seattle

and elsewhere, Periplaneta americana L. (the American cock-

roach) occasionally taken in hotel basements and in restaurants

in Seattle, and Blatta orientalis L. (the oriental, black, or Asiatic

cockroach) recently taken in an apartment in Kent.

Finally, there are two adventitious species occasionally re-

ported from bananas in Seattle: Panchlora cubensis Scudder*

(the green Cuban roach) and Nyctibora noctivaga Rhen (the

great brown roach) .

All but the last of these species can be recognized on the

basis of the material given in Essig’s Insects of Western North

America 1926, pp. 103-106, and all are described in Blatchley’s

Orthoptera of north-eastern America 1920 pp. 59-114. — Melville

H. Hatch, University of Washington.

♦Hebard, ibid p. 270, records this species from Bremerton.

JULY, 1938]

TING— PANS COPUS

121

A NEW SPECIES OF PANSCOPUS IN THE SUBGENUS

NOCHELES

( Coleoptera : CurculionidsB )

BY PETER C. TING

State Department of Agriculture, San Francisco, California

The structural characteristics of the subgenus Nocheles are

clearly stated by Mr. L. L. Buchanan in his recent monograph^ of

the genus Panscopus. The writer is further indebted to Mr.

Buchanan who very generously examined specimens of the new

species herein described, and sent me comparative notes and

illustrations of the unique male type of Panscopus {Nocheles)

squamosus Pierce; also for arranging a loan from the United

States National Museum of a male and female of the variety

dentipes Pierce one of which was a gift to the California Academy

of Sciences.

Panscopus (Nocheles) michelbacheri Ting, new species

Form of female rather robust; elytra less than two-sevenths

longer than broad, the dorsum noticeably flattened, apex deflected

forward anterior to base of declivity. Male elongate; elytra nearly

twice longer than broad, dorsum slightly more convex than female,

declivity abrupt but not vertical. Color of derm piceous to fusco-

piceous; scales chiefly dark brown to dull black with a few irregu-

larly placed golden brown ones. Length exclusive of head, female

7.5 mm. to 9 mm., male 7 mm. to 8 mm.; width, female 4 mm. to

5 mm., male 3 mm. to 3.5 mm.

Rostrum one-fifth shorter than prothorax. Upper surface con-

tinuous with front in profile; above rugulose and closely punctate;

covered, except for extreme apex, with slightly curled or raised

scales from two to three times longer than broad; nasal plate not

sharply defined; median carina distinct extending from base to

apex of the v-shaped ridge just behind nasal plate; sides of ros-

trum deeply punctate, not rugulose as in dentipes,] each puncture

bearing a slender scale; rostrum beneath with slender scales;

tentorial pits very prominent. Antennal scape reaching slightly

beyond hind margin of eyes and densely covered with bristle-like

setae; funicular segments more sparsely covered with finer setae,

first four segments longer than broad, the last three moniliform;

club generally more elongate in male than in female. Head above

with closely-spaced punctures bearing elongate scales ; beneath

^ The Genus Panscopus Schoenherr, L. L. Buchanan, Smithsonian Miscellaneous

Collections, vol. 94, no. 16, 1936.

122

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 3

and at sides behind eyes distinctly strigulated. Prothorax wider

than long (3:2.4), sides nearly evenly rounded in female, in the

male widest in apical half with the sides more gradually nar-

rowed to base; pronotum with slender scales four to five times

longer than broad, placed in large, slightly raised, smooth-rimmed

punctures and with a greater number of shorter scales, twice

longer thaii broad, placed in the slightly depressed spaces between

the rims of the punctures; median sulcus very shallow, hardly

visible; sides somewhat rugulose with broad punctures bearing

short scales. Elytra with serial punctures separated by about

their own diameter each puncture bearing an elongate scale three

to four times longer than broad; intervals flat or nearly so in male;

sides of elytra of female converging very gradually until the apical

fourth is similar to that of torpidus, not evenly rounded as in

female of dentipes'; primary vestiture consisting of closely placed,

overlapping scales twice longer than broad, slightly sparser and

more erect on male than on female; thei first seven or eight inter-

vals bear two or three rows of irregularly placed, reclinate scales

five or six times longer than broad; the last intervals bear very

few of these slightly raised, slender scales except near their apices.

Legs with femora densely covered with elongate scales, except for

posterior face of middle and hind pairs; all tibiae faintly denticu-

late and covered with both scales and setae, some of which on the

ventral margin appear as yellow spines. Male with last visible

abdominal sternite faintly depressed at median line; vestiture of

male sternites primarily elongate scales with some typical setae on

sternites III, IV, and V, and with setae only in median concavity

of sternites I and II. Female with abdominal sternites densely

covered with scales, the last visible sternite broadly and shallowly

depressed in apical two-thirds. Male genitalia distinct from that

of squamosus, dentipes and torpidus, with median lobe as shown

in figure A ; internal sac with an isolated ventral patch of tooth-

like spinules at base (fig. B) ; remaining spinules very much

smaller and extending anteriorly rather evenly except for the

extreme apex. There are no, spinules posterior to or at sides of

the so-called basal patch. Female genitalia typical of the genus

Panscopus.

Type locality: Nevada City, Nevada County, California, 64

specimens collected under wood and other debris by Dr. A. E.

Michelbacher and Mr. Mont A. Cazier on June 27, 1937. The

writer also has examined a single male specimen collected by

Mr. Roy Wagner at Challenge, Yuba County, California, on June

26, 1929.

JULY, 1938]

TING— PANSCOPUS,

123

Holotype male and allotype female (Nos. 4594 and 4595)

in the entomological museum of the California Academy of Sci-

ences, San Francisco. Paratypes are in the collections of the

United States National Museum, Los Angeles Museum, Califor-

nia Academy of Sciences, State Department of Agriculture, San

Francisco, Dr. Edwin C. Van Dyke, Dr. A. E. Michelbacher, Mr.

Mont A. Cazier, Mr. A. T. McClay, Mr. Roy Wagner, and in that

of the author.

P. michelbacheri is chiefly separated from the other known

members of the subgenus by a much smoother pronotum and a

fainter median sulcus — lacking the deep, irregular furrows,

ridges, and prominent tubercles of the other forms — also by its

greater size, general shape, and the form of the male genitalia.

This new species resembles torpidus in the idouble type of pro-

notal scales, but lacks the elevated, alternate, elytral intervals of

the latter and is probably more closely related to squamosus.

It seems appropriate to report that Mr. H. P. Lanchester has

collected additional specimens of the small variety of squamosus

discussed by Mr. Buchanan on page 9 of his previously men-

tioned monograph. They were taken at Bone Springs in the Blue

Mountains of Oregon on July 4, 1935.

Explanation of Figures

Fig. A, Panscopus (Nocheles) michelbacheri new species,

median lobe of male genitalia, dorsal and lateral views. Fig. B,

same, ventral patch of tooth-like spinules at base of internal sac

of median lobe. Fig. C, P. squamosus variety dentipes Pierce,

median lobe, dorsal and lateral views.

124

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 3

NOTES ON CYSTEODEMUS IN SOUTHERN NEVADA

(Coleoptera: Meloidae)

BY IRA LA RIVERS

University of North Carolina, Raleigh

I had occasion, during the summer of 1937, to meet Cysteo-

demus armatus several times in the field, and found many of her

activities to be of interest.

Strictly a desert animal, this rather large beetle is a familiar

sight during the hot summer season, lumbering swiftly and

erratically about the simmering desert floor, ever in search of

food, which consisted of leaves and flowers of the prevalent

desert annuals. So common is this insect (relatively speaking)

in the wide, flat, hot valleys of the Lower Sonoran Zone in

Southern Nevada, that I find it a convenient zoologic index to

the flora and fauna peculiar to these situations; particularly

well does its population climax in Southern Nevada coincide

with that of the polemoniac Langloisia setosissima, which, in

conjunction with Gilia ophthalmoides, G. leptomeria, and

Glypto pleura setulosa, locally forms the bulk of its food during

early summer.

The familiar Covillea tridentata, in whose company Cysteo-

demus armatus has so often been reported, extends northward,

unaccompanied in the last reaches of its area by its distinctive

little black canfrere. Southward, in the very tip of the state,

the insect is intimately associated with Prosopis juliflora in the

granite-derived and much dissected outwash plain leading down

eastward from the Dead Mountains to the Rio Colorado. Here,

it lives in the numerous wasihes, with their concentrated detrital

sand and their characteristic floral association of Prosopis juli-

flora, Cassia armata, Krameria canescens, and Parosela fre-

monti, and bustles about actively, while the mid-day air tem-

perature is 130 degrees and the sand simmers at 150. In such

extreme temperatures, Cysteodemus armatus loves the shade of

dense, rugged shrubs and perennials, and scurries from plant to

plant in her excursions.

I had no occasion to observe feeding habits in the Dead

Mountains, but considerably farther northwest, in Pahrump

Valley, splendid opportunities of the sort presented themselves.

Here, in a large, level valley, bounded on the north and east

JULY, 1938]

LA RIVERS— CYSTODEMUS

125

by the magnificent Spring Mountains, whose Charleston Peak

stands up against the sky as a biologic island of unique possi-

bilities, and on the south and west by low, long ranges,! found

an environment admirably suited to the desert beetle.

Pahrump Valley itself is flat, unbroken save for a general

swell near the northwest portion. A low fault line runs north-

west-southeast in the center of the valley, with an approximate

offset of one foot and hanging wall of fifteen feet. At Stump

Springs, near the northwest end of this fault. Stump Creek, an

irregularly periodic stream flowing in a southwest direction from

the foothills of Spring Mountain twelve miles away, has cut

back a moderate flat-bottomed gully through the two-foot hard-

pan which caps the valley floor. Here, in the desert at the mouth

of the gully, Cysteodemus armatus has found an ideal situation,

and abounds in relatively large numbers, inseparably associated

with Covillea tridentata, Prosopis juli flora, and the annuals pre-

viously mentioned, as well as the ubiquitous Stanleya elata,

Eriogonum inflatum, and many unidentified plants, as Oeno-

thera, Eriogonum, Atriplex, Chenopodia, Asclepias, etc. Ahronia

orhiculata and Nama demissa are abundant on the sand dunes

bordering the gully, while Anemopsis calif ornica and Helio-

tr opium xerophilum are profuse in moist situations about the

small pool maintained by a constant, but small, spring at Stump

Springs proper.

In this widened area, as well as on the “mesa” about, the

beetle can be found at almost any well-lighted, warm time of

day. The bulk of individuals seen are females, but during June,

at least, pairs in copulation are not uncommon.

In foraging, some individuals hold a remarkably straight

“course” between the creosote bushes, maintaining themselves

at an average median distance from bordering shrubs with con-

sistency; these jaunts may be for some distance, and are ulti-

mately interrupted by much wandering in a relatively small area,

this latter performance as remarkable for its haphazard in-

definiteness as the former is for its conciseness. The reason for

such wandering is not altogether clear. Occasionally, when

male and female met, coition ensued, but more often, the dif-

ferent sexes paid little attention to each other during these hap-

hazard meetings, the male occasionally becoming momentarily

excited. Since later observations seemed to show that the search

126

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 3

for food was not primarily responsible for such behavior, the

answer is undoubtedly to be found in the egg-laying activities

of the animal.

In this area, Langloisia setosissima was abundant and seemed

a favorite food. Any plant encountered “on the march” was

almost invariably fed on.

The manner of locating the plant was interesting, and seemed

to be effected almost, if not entirely, by the sense of smell, except

at the extremely short distances of one inch or less. On

innumerable occasions I have seen a female bustle by a plant

not more than four inches away, certainly not beyond the range

of even mediocre vision, and be unaware of its existence. That

these were not individuals already satiated was shown by the

fact that they all encountered a Langloisia setosissima sooner

or later, and fed upon it without hesitancy. I have in my field-

book, data concerning a robust female who bustled “for two hun-

dred feet along the Stump Springs hardpan, going in a straight

line and avoiding all bushes, but stopping twice to feed on

Langloisia setosissima, the last time passing the plant, then

scenting it as she drew away down-wind, and returning directly

to it, a distance of sixteen inches.” This was one of numerous

instances.

In feeding, the individual generally climbs upon the plant,

and feeds on the choicest tidbits at her leisure; this is invariably

the procedure with the higher Gilia leptomeria and G. ophthal-

moides, which cannot be reached from the ground, but is also

the general method followed in feeding over the low plants, as

L. setosissima, in which all but the innermost portions are

accessible from the ground.

The act of feeding is of interest: from my fieldbook —

“watched a- large female feed on leaves and dried flowers of L.

setosissima. Bites were not clean-cut, but feeding consisted of

macerating the tissues to a pulpy mass, then pulling them away

from the main portion, sometimes in long threads which were

laboriously swallowed. Twice she pulled the sharp-pointed

bristles, which adorn the calyx tips and leaves, into her mouth,

then rejected them. Once she apparently stuck herself, for she

pushed the bristle out with her forelegs and pawed several times

at her mouthparts. Defecation proceeded more-or-less continu-

JULY, 1938]

LA RIVERS— CYSTODEMUS

127

ously throughout the feeding. After eating three leaves and try-

ing a dead flower, she left the plant, described a short, bustling

circle, then returned to feed again. She finally left after a total

feeding period of eleven minutes.”

In copulation, the male rides complacently upon the back of

the female, who carries him wherever she goes, even wandering

high up in the slim and precarious stemsi of GUia ophthalmoides

with her burden. When a pair are frightened, there is a gen-

eral attempt at an exodus, but the male, though he tries, can

seldom escape, and is dragged off by the more powerful female.

Of the very interesting egg-laying activities, I saw little. In

this same region, I came upon a female emerging from a burrow,

which immediate excavation showed to be an inch and a half

deep, struck obliquely into the ground at a 60 degree angle, and

containing a ball of small, elongate, white eggs, the entire mass

being 7 mm. in diameter. She had undoubtedly just terminated

the long and laborious process of conceiving, nurturing, and

depositing the clutch, for the mass was still moist to the touch,

and pliable. On four occasions, before and after this, I observed

females begin the process of digging a burrow, but watched

only to see them desert a job not eVen well begun, and resume

their incessant wandering. What digging they performed was

done with mandibles and forelegs, the former loosening the flirt,

the latter pushing it backwards beneath the abdomen. For some

reason which I have not as yet discovered, but which must be of

some moment to C. armata, select spots for egg deposition are

not easily found, although I was not able to detect any distinct

differences in soil texture, compactness, hardness, or location

between the various abandoned sites and the burrow which I

found, incidentally, beneath a gnarled Prosopis juliflora beside

a gravel wash.

As its numbers attest, C. armata is highly successful in its

environment. The fact that it is a beetle, and thereby possessing

a heavily chitinized coat, or at least, in remote times, an excel-

lent foundation for such a coat, placed it one jump ahead of

the game in its efforts to resist extreme dessication. Its wing-

less condition, by forcing it into a restricted, ambulatorial

“groove,” has enabled it to become a master competitor for

128

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 3

the favors of its surroundings because of its consequent ability

to expend all its energies upon a single phase of its environ-

ment, instead of many.

Map showing: the distribution, as near as can be ascertained

at present, of Cysteodemus armatus in Southern Nevada. The

stippled, enclosed areas are mountain ranges within the region

inhabited by the beetle, but upon which it does not occur, being

strictly a lowland insect. An X marks the localities of excep-

tional abundance of the species. The insect’s altitudinal varia-

tion within the limits of this map are from (approximately)

500 ft. to 2500 ft.

Neotropical Gyponin^

In the Annals of the Carnegie Museum, Vol. XXVII, pp. 11-52,

1938, Prof. Herbert Osborn has given us a most valuable paper

on the Neotropical Gyponinae. In this he treats of 70 species

which he places in nine genera, with a key to these genera and

five plates, mostly of structural details. Of these 3 genera and

38 species are described as new.

One correction seems to be called for. On page 12 he states

that he finds no record of genus Proranus Spinola having been

described. This genus was fully characterized by Spinola in his

Tavola Sinottica, p. 122, 1850, with one species ghilianii Spinola

from Para, which must be taken as the type of the genus. — E. P.

Van Duzee.

JULY, 1938]

PRITCHARD— HODOPHYLAX

129

THE GENUS HODOPHYLAX JAMES, WITH A DESCRIPTION

OF BASINGERI, NEW SPECIES

{Diptera, Asilidce) *

BY A. E. PRITCHARD

The genus Hodophylax was proposed by James (1933) to

include the single species aridus. James (1934) revised his

diagnosis of the genus after having examined additional material.

A second species of Hodophylax is described in this paper, and

the geographical distribution of aridus is considerably extended.

Hodophylax is closely related to Omninablautus Pritchard

and Ahlautus Loew. Omninablautus and Ablautus differ from

Hodophylax in being slender, having the mystax very dense and

covering the entire face, and by having long, strong dorsocen-

trals along the entire mesonotum and other bristles anteriorly.

After James recognized the tibial spur to be characteristic of

Hodophylax, he considered the relationships to be more with

Parataractius Cole; the writer feels that the relation here is more

distant and that the difference in antennal development is of more

significance than the similarity in the reduction of the pulvilli

and the presence of the tibial spur.

The writer has a single specimen of an elongate species,

representing an undescribed genus from Phoenix, Arizona

(August), which has the pulvilli about one-fourth as long as

the claws. This may represent an intermediate between Hodo-

phylax and certain pulvillate genera, or, since the third antennal

segments of this specimen are lacking, may be more closely

related to Lestomyia Williston.

Hodophylax aridus James

1933. Hodophylax aridus James, American Museum Novitates,

no. 596:1-2.

1934. Hodophylax aridus James, Pan-Pacific Entomologist, 10:83-

84.

James recorded the species from Colorado (August, Septem-

ber) and Kansas (August) . The writer has additional material

from Artesia, New Mexico, August 30, 1934 (A. E. Pritchard) ,

and Wilcox, Arizona, August 11, 1930 (T. F. Winbum and

♦Paper No. 1607 of the Scientific Journal Series of the Minnesota Agricul-

tural Experiment Station.

130

THE PAN-PACIFIC ENTOMOLOGIST |^VOL XIV NO 3

R. H. Painter) . The tibiae externally and the tarsi for the

most part are usually reddish like the femora.

Hodophylax basingeri Pritchard, new species

Body black; legs black except reddish femora; abdomen with

caudo-lateral pollinose rectangles on segments two, three, and

four. Length, 9 mm.

Female. Head silvery white pollinose, with, hairs and bristles

all white. Mystax on lower half of face, moderately dense on

lower third. Ocellar tubercle with numerous hairs and bristles

which do not get longer than the third antennal segment. Antennae

with proximal two segments and base of third reddish, black

beyond this. First antennal segment slightly shorter than sec-

ond; second only with a strong bristle below; style about one-

half as long as third antennal segment, its proximal division rela-

tively short. Thoracic pleura densely white pollinose with brownish

tinges, but with a wide, shining black stripe, devoid of pollen,

from the wing base to the front coxa; coxas also shining black;

propleura with dense, erect, long hairs. Mesonotum rather thinly

whitish pollinose, with brown, geminate middorsal stripe, and

brownish lateral stripes; rather thinly clothed with fine, white

hairs which are directed posteriorly but not appressed, and long,

white, lateral bristles; dorso-centrals, except posterior pair,

hardly differentiated. Scutellum brownish pollinose, with a patch

of about twelve marginal white bristles and hairs on either side.

Abdomen above largely shining black, the posterior third of ter-

gites I to IV each with a whitish pollinose stripe which is inter-

rupted on median two-thirds of I, median third of II and III,

and median half of IV ; laterally whitish pollinose on I to IV

and part of V, although suffused with brown on proximal half

of II, III, and IV. Legs shining black, the femora, however,

reddish except at tip; clothed with white bristles and recumbent

white hairs, the anterior tibial spur and bristles below tarsi all

black; claws long, black; empodial bristle yellowish, less than

one-fourth the length of the claws. Wings hyaline; veins yel-

lowish; all marginal cells open.

Holotype, female, Quail Spring, San Bernardino County,

California, October 5, 1934 (A. J. Basinger), in the collection

of Mr. A. J. Basinger for whom the species is named.

Basingeri differs from aridus in having the antennal style

about one-half as long as third antennal segment (about one-

fourth length of third antennal segment in aridus) ; mystax

over lower half of face (oral in aridus) ; propleura with

densely erect, long hairs (with several bristles and marginal.

JULY, 1938]

PRITCHARD— HODOPHYLAX

131

recumbent hairs in aridus) ; mesonotal bristles much longer;

mesonotal hairs fine and rather erect (heavy and appressed in

aridus) ; dorsocentrals fine, little differentiated (short bristles

in aridus) ; scutellar margin with a patch of bristles and hairs

on either side (with two pairs of bristles in aridus) ; abdomen

bare of pollen medially in the female (with anterior mesal spots

in aridus) ; and the caudo-lateral spots less extensive.

Bibliography

1933. James, Maurice T. New Asilidae from Colorado. American

Museum Novitates, No. 596:1-2.

1934. James, Maurice T. Taxonomic Notes on Some Colorado

Asilidae. Pan-Pacific Entomologist, 10:83-84.

Hodophylax hasingeri, holotype female.

132

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 3

SYNOPSIS OF THE GENUS DALMANNIA IN NORTH

AMERICA (DIPTERA, CONOPID^)

BY GEORGE E. BOHART

Berkeley, California

Genus Dalmannia Robineau-Desvoidy

Dalmannia Robineau-Desvoidy, 1830, Mem. Divers Savans

Acad. Roy. Sci. Inst. France (Sci. Math., Phys.) 2:248.

Stachynia Macquart, 1833, Mem. Soc. Roy. Sci. et Arts, Lille.

Dalmannia is holarctic in distribution and is represented in

North America by six known species. Of these vitiosa Coq. oc-

curs thruout North America, nigriceps Loew is limited to the

eastern part of the continent, and the others are restricted to

North America west of the Rockies. The species are all rare

and, because of their close association in flight and flower habits

with solitary bees, are probably parasitic upon them.

The genus was excellently diagnosed by Williston, 1883. The

following characters will suffice for generic definition: Shining

black species with bright yellow markings; antennae with a dis-

tinctly dorsal arista; anal cell but little longer than the second

basal.

Comprehensive works on the North American species were

undertaken by Williston, 1883, and by M. C. Van Duzee, 1927,

in their revisional papers on the Conopidae. The present paper

brings the synonymy up to date, describes one new species, briefly

discusses the known species, and proposes a revised key.

Dalmannia nigriceps Loew

nigriceps hoew, 1866, Berl. Ent. Zeitsch., 10:40.

This species is characterized by the very restricted yellow

bands of the dorsum of the thorax and the uniformly pale pubes-

cence of the dorsum except for the apical tergites. It was rede-

scribed by Williston, 1883.

The type locality is given by Williston as Virginia. Dr. Banks

recorded it from Falls Church, Virginia, collected in June, and

sent me specimens from Holliston, Mass., collected at the end of

May. So far as known to me it has not been observed in the

western United States.

JULY, 1938]

G. BOHART— DALMANNIA

133

Dalmannia picta Williston

picta Williston, 1883, Trans. Conn. Acad., 6:94.

This species has extremely short, uniformly pale hair and a

tendency for strongly disjuncted bands on the abdominal tergites.

The type locality cited by Williston is New Mexico. Addi-

tional localities are: Mojave, Calif., April 10, 1936, (Bohart)

where there were great numbers of Diandrena nesting and col-

lecting pollen; Chiricahua Mountains, Cochise County, Arizona

(V. W. Owen), Calif. Acad. Sci.

Dalmannia vitiosa Coquillett

vitiosa Coquillett, 1892, Ent. News., 3:150.

Altho Coquillett in his original description, based on a single

specimen, stated that the absence of the cross vein separating the

discal and second submarginal cells might be an individual aber-

ration, this character holds' in five other specimens which I have

examined. This very remarkable species is small and dark with

completely black thorax and unclouded wings.

It has a wide geographical range, having been described from

Los Angeles County, California, and collected later by Dr. Banks

at Falls Church, and Chain Bridge, Virginia, in April. Addi-

tional records are: Manhattan, Kansas, April and May (Curtis

Sabrosky) ; Silverado Canyon, Orange County, California, Feb-

ruary (R. M. Bohart) ; Santa Rosa, Sonoma County, California,

March (R. C. Dixon).

Dalmannia blaisdelli Cresson

blaisdelli Cresson, 1919, Proc. Acad. Nat. Sci. Phil., 71:190.

This, the largest and most boldly marked American species of

the genus, has very short appressed golden pile on the dorsum of

the thorax and heavily clouded wings.

It was originally described from Mokelumne Hill, Calaveras

County, California. Other California records are as follows: Mt.

Hamilton, near San Jose, April, on flowers and foliage of Rhus

(G. E. Bohart) ; Little Yosemite, elev. 6000 ft.. May; Indepen-

ence, Inyo County, June (N. W. Frazier) ; Blue Lakes, Lake

County, May (E. P. Van Duzee). The specimens which I have

taken were collected in heavily wooded regions.

134

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 3

Dalmannia PACIFICA Banks

pacifica Banks, 1916, Ann. Ent. Soc. Am., 9:199.

hirsuta Van Duzee, 1927, Proc. Calif. Acad. Sci., 16:591. (n. syn.)

This species is characterized by the hind and middle meta-

tarsi of the female, which are greatly elongated and each bears

along more than the half of its inner surface an elongate plate

which seems to arise from the apex of the tibia and has flattened

black bristles along the margin. In other species the homologous

structures are small semicircular plates at the apices of the tibiae.

It is further distinguishable in both sexes by the great extent of

yellow on the abdomen. I have carefully compared the holotype

of D. hirsuta V. D. with specimens of pacifica and find them to

be the same, hirsuta being the female of pacifica.

Described from Corvallis, Oregon, June. California records

are: Berkeley, March to May (G. E. and R. M. Bohart) ; Davis,

May (B. E. White). It occurs in open grassy fields.

Dalmannia heterotricha G. Bohart, n. sp.

Holotype female: Length, 7.5 mm.; black, with at least half

of face and abdomen yellow; dorsum with very long erect

pubescence.

Head: First and second segments of tongue following palpi each

approximately 1.8 mm. in length; head yellow except for black

antennee, occiput, vertex, and median portion of frons; pile of

frons pale and shorter than arista, that of vertex mostly black,

directed forward and considerably longer than arista, that of lat-

eral portion of occiput pale and approximately as long as second

antennal segment.

Thorax: Dorsum black except for humeri and apical half of

scutellum which are yellow; pile of dorsum semi-erect altho di-

rected posteriorly, nearly uniformly longer than second antennal

segment and mostly slightly shorter than apical margin of the

discal wing cell; pile of middle third of dorsum of thorax mostly

black, that of fore and hind thirds mostly pale; hind and middle

cox£e mostly black, front coxae mostly yellow; tibiae and femora yel-

low except for brown proximal spots on fore femora and black

apical ring on hind femora; tarsi and apical half of claws black;

pulvilli and basal half of claws pale; pile of legs black, that along

dorsal margins of femora mostly longer than arista ; metatarsi less

than twice as long as length of their respective second tarsal seg-

ments; apical plate-like processes of tibiae extending along less

than the basal half of their respective metatarsi; wings lightly

and uniformly grayish, subcostal cell very little broader at apex

JULY, 1938]

G. BOHART— DALMANNIA

135

than elsewhere, a distinct cross vein between discal and second

basal cells.

Abdomen: Dorsum black with apical third of second tergite,

trilobed apical two-thirds of third and fourth tergites, apical tri-

angular area of fifth tergite, and median spot of sixth tergite

yellow; venter yellow; fifth and sixth sternites, and basal triangu-

lar area terminating at apex of third sternite black; pile of first

five tergites pale and medially shorter than second antennal seg-

ment, laterally mostly as long as second antennal segment; pile of

sixth tergite black; that of second sternite black and longer than

second antennal segment.

Holotype and one female paratype: Sand dunes on north side

of Pt. Reyes Peninsula, Marin County, California, May 5, 1936,

on flowers of Phacelia (G. E. Bohart), holotype in Calif. Acad.

Sci., (No. 4688).

Similar in hair length to pacifica Bks., but differing by hair

characters as given in the key, smaller extent of yellow on the

abdomen, and the normal hind and middle metatarsi.

Key to the species of Dalmannia in North America

1. Scutellum and humeri wholly black; discal and second basal

cells usually not separated by a cross vein, cross vein, if pres-

ent, conspicuously weakened or broken anteriorly; subcostal

cell at least twice as broad at apex as at narrowest point;

small species, not more than 4 mm vitiosa

-. Scutellum and humeri partly yellow; discal and second basal

cells always separated by a cross vein; subcostal very little

broader at apex than elsewhere ; larger species, at least 6 mm.

2. Pile of dorsum of thorax wholly pale, whitish; hairs of dorsum

of thorax averaging shorter than length of arista or cross

vein between discal and' second basal wing cells; wings com-

pletely clear picta

-. Pile of dorsum black, at least in the center 3

3. Pile of dorsum of thorax golden anteriorly and blackish poste-

riorly, hair of both areas closely appressed and distinctly

shorter than arista or cross vein between discal and second

basal wing cells; hind femora black except for small apical

ring of yellow; wings smoky. hlaisdelli

-. No golden hair on thorax, pile of dorsum at least as long as

arista or cross vein between discal and second basal cells, if

not evidently so, hind femora mostly yellow. 4

4. Yellow of tergites produced forward laterally and in the mid-

dle; hair of scutellum at least partly dark, or if not, at least

twice as long as arista 5

136

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 3

-. Yellow of tergites produced forward only in the middle; hair

of scutellum wholly pale ; wings smoky nigriceps

5. Black bands on tergites two to five inclusive broken by the

forward production of yellow; pile of dorsum of abdomen with

considerable amount of black on every segment; hair of vertex

little, if any, longer than second antennal segment and very

sparse ; hind tibia of female bearing an apical process extend-

ing along more than half the length of the metatarsus which

is long and arcuate pacifica

Black bands on tergites continuous; pile of dorsum of ab-

domen white except for black hairs on fifth tergite ; longer hair

on vertex one-third to one-half longer than second antennal

segment; pile generally very long and dense; hind tibia and

metatarsus of female not as above heterotricha

A SYNOPSIS OF THE GENUS EUPARAGIA

{Hymenoptera, Vespidce, Eiiparagiince)

BY RICHARD M. B CHART

Berkeley, California

The genus Euparagia Cresson is apparently limited in dis-

tribution to portions of western North America. Its species are

all extremely rare and are represented in few collections. The

genus contains at present two species, macidiceps (Cameron) and

scutellaris Cresson, the former recorded from Mexico and New

Mexico, and the latter from California and Nevada.

While examining a number of Vespidae collected by Mr.

N. W. Frazier in the Lone Pine, Inyo County, region of Califor-

nia, two male specimens of Euparagia were idiscovered which

differed in several important characters from specimens of

Euparagia scutellaris in the author’s collection. A subsequent

examination of the types of scutellaris at the Academy of Natu-

ral Sciences of Philadelphia, and the only known female of

maculiceps at the United States National Museum, confirmed the

opinion that the Lone Pine species was new. On account of the

rarity and interesting habits of this genus, a synopsis of its

species is given including the new one and additional records of

the others.

JULY, 1938]

R. BOHART— EUPARAGIA

137

A discussion of the generic characters has been well pre-

sented by Bradley in his “Taxonomy of the masarid wasps, in-

cluding a monograph on the North American species,” Univ.

Calif. Publ., Ent. I: 370-434, 1922, (12 figs, of Euparagia) . The

combination of simple tarsal claws, three cubital cells in the

forewing, elongate anal lobe of the hind wing, unplaited wings,

sessile abdomen, simple 13-segmented male antennae which are

without a terminal club, and the remarkable oxybelid-like facies

will serve to distinguish the genus. It should be noted that the

characters given by Bradley for the anterior femur of the male

are not universal in the genus and therefore should be stricken

out of the generic description.

Key to the Species of Euparagia.

1. Vertex behind the ocelli with two prominent humps, parted by

a sharp furrow, and with two weak humps near the inner

margins of the compound eyes ; front and vertex, save for the

smooth humps, coarsely, irregularly punctate; pronotum

coarsely punctate maculiceps

-. Vertex without humps; vertex and front uniformly granular-

punctate, pronotum finely punctate 2

2. Front femur of male produced knob-like "at the base; male

clypeus and mesonotum weakly silvered, the silvering espe-

cially on the latter with a slight yellowish tint; wings slightly

but distinctly yellow-stained; pale coloration, of the thorax at

least, yellow; abdomen without reddish markings scutellaris

-. Front femur of male slightly, swollen at the base but not pro-

duced knob-like; male clypeus and mesonotum heavily silvered

obscuring the puncturation ; wings perfectly clear; pale col-

oration of the body ivory-white; abdomen with reddish mark-

ings platiniceps

Euparagia maculiceps (Cameron)

Plesiomasaris maculiceps Cameron, 1904, male. Trans. Am.

Ent. Soc., 30:267.

Odynerus simplicipes Cameron, 1905, male. Trans. Am. Ent.

Soc., 31:380.

Psiloglossa simplicipes Rohwer, 1909, female. Ent. News., 20:

357.

Euparagia maculiceps Bradley, 1922, male, female., Univ.

Calif. Publ. Ent., 1:384.

138

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 3

New Mexico: Las Cruces, August 31, one female at flowers

of Solidago, C. H. Townsend, {simplicipes Roh. type, U. S.

N. M.) ; Mexico: Guerrero, 3000 ft., Godman and Salvin, {ma~

culiceps and simplicipes Cam. types, British Museum).

Euparagia scutellaris Cresson

Euparagia scutellaris Cresson, 1879, male, female. Proc. Acad.

Nat. Sci. Phila., Ent. Sec., 6:6 (genotype by monotypy).

Euparagia maculifrons Bradley, 1922, Univ. Calif. Publ. Ent.,

1:384 (in error).

Euparagia scutellaris Bradley, 1922, male, female. Univ.

Calif. Publ. Ent., 1:385.

Euparagia scutellaris F. X. Williams, 1927, habits. Pan-Pac.

Ent., 4:38-39.

An account of the nesting habits has been given by F. X.

Williams who records it as “nesting in the hard ground, in one

case on the slope of an exposed gravelly pit; the burrows which

were not deep, terminating in one or more cells, and were sur-

mounted by a idelicate and slender curved tube of clay.” The cells

were provided with semi-paralyzed curculionid larvae. Altho the

nests were not observed, a pair of this species was taken by the

author on Mt. Diablo, California, flying very low above a boggy

area near a spring on an exposed hillside.

Nevada: two males, two females (type specimens, A. N. S. P.) .

California: Lake Tahoe, July, 1925, females (F. X. Williams) ;

Sobre Vista, Sonoma County, one female (J. A. Kusche) ; Mt.

Diablo, 500 ft. elev., one pair. May 12, 1937 (R. M» Bohart) ;

Yosemite Natl. Park, one male, Aug. 2, 1930 (E. C. Zimmer-

man) ; Santa Cruz Mts., one female, coll. U. S. N. M. ; Santa

Clara County (C. F. Baker) ; Palo Alto, one male. May 31, 1922

(S. F. Flanders) ; Kaweah, Tulare County, one male, June 21,

1937; Claremont, four males, one female (C. F. Baker).

Euparagia platiniceps Bohart, new species

This species is most closely related to scutellaris but can easily

be distinguished by the characters given in the key. The front

JULY, 1938]

R. BOHART— EUPARAGIA

139

femur of scuteUaris male is produced at the base into a knob-like

tooth below and a small swelling' behind. Also the front trochanter

has a stout curved finger-like terminal process. In platiniceps the

front femur is merely' slightly swollen at the' base and the process

of the trochanter is shorter, very slender, and sharply pointed.

The posterior half of the propodeum is dull and closely punc-

tured in scutellari& but shining and sparsely punctured in platini-

ceps. The pubescence of the former is much more sparse and of a

less brilliant white-silver color than that of the latter, the front

and clypeus of which are densely platinum-hirsute. The male

genitalia of the two species do not appear to offer significant

differences.

Male. Black, the following parts ivory-white: an inferior spot

on underside of first antennal segment, mandibles except at apex,

clypeus except marginally all around, a spot on vertex adjacent

to compound eye, dorsal surface of pronotum except latero-poste-

rior margin, outer margin of tegula, a spot beneath fore tegula on

mesothorax, a median posterior spot on mesoscutum, a large cen-

tral spot on mesoscutellum, outer apices of front and middle

femora, bases and apices of all tibiae, outer bases of all tarsi,

irregular apical bands on first six abdominal tergites, the first

interrupted by a median line, median spot on seventh tergite,

double median spots on sternites two to five; the following parts

reddish brown: antennal flagellum, clypeus at apex, marks on

apex of femora, tibiae and most of tarsi, central spot of fore tegula,

a lateral mark on first abdominal tergite, sub-lateral marks on

tergites two to six grading into black. Wings perfectly clear,

hyaline, stigma and veins dark brown. Head and thorax thickly

covered with a fine platinum-white silky pubescence, abdomen with

a similarly colored but sparse short pubescence dorsally. Punc-

turation very fine, the punctures almost contiguous except on

propodeum which is shining thruout. Head broader than thorax,

somewhat heart-shaped as seen from the front, greatest width at

the emargination of the eyes; third antennal segment about twice

as long as second; clypeus sharply bidentate apically, mandibles

weakly tridentate. Thorax as seen from above almost as broad as

long, pronotal angles rounded; fore femur slightly swollen at the

base but evenly rounded, untoothed; process of fore trochanter

very slender and sharply pointed. Venter of abdomen almost per-

fectly flat, first sternite without a median furrow.

Holotype, male, Lone Pine, Inyo County, California, June,

1937, N. W. Frazier, collector, deposited in the California

Academy of Sciences (No. 4693). Paratype, one male, same data

as holotype, in collection of author.

140

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 3

A NEW GENUS AND SPECIES OF ORSILLINI FROM CHINA

(Hemiptera, Lygaeidae)

BY ROBERT L. USINGER

While studying the species of Lygasidse allied to Nysius it

was found necessary to reexamine the generic classification of

the tribe Orsillini. This tribe is world wide in its distribution

and is characterized by an inordinate development of genera and

species in a few insular areas. Of the mainland genera Or stilus

has remained isolated as a rather homogeneous western and

central Palaearctic group. To this may now be added a very

divergent form from the central portion of East China.

Sinorsillus Usinger, n. gen.

Form broad and flattened or subdepressed. Body, excepting

area surrounding ostiolar canals, shining and densely clothed with

a relatively long, fine, subdepressed, fulvous pubescence. Head,

pronotum, and scutellum structurally much as in Orsillus. Ros-

trum very long but not quite reaching to tip of abdomen. Con-

nexivum broadly exposed, immaculate. Femora entirely inermous.

Genotype: Sinorsillus piliferus Usinger, n. sp.

Allied to the European and circum-Mediterranean genus

Orsillus Dallas with which it agrees in its depressed form, por-

rect and slightly exserted head which is strongly produced in

front of the eyes, straight or only slightly rounded costal mar-

gins, broadly exposed connexivum, and very long rostrum. In

Orsillus, however, the front femora are distinctly spined beneath,

the connexivum is usually conspicuously alternated, and the body

surface is duller and covered with a shorter and less conspicuous

pale pubescence.

Sinorsillus piliferus Usinger, n. sp.

Head porrect; scarcely broader, eyes included, than long; pro-

duced before the eyes for a distance one and one-half times the

length of an eye; tylus broad, depressed before the apex; juga

long and prominent, swollen near base of tylus; vertex scarcely

elevated and transversely rugose, three times as broad as width

of an eye; antenniferous tubercles obliquely directed downward,

produced from obsolescent, rounded carinae along inner margins

of eyes anteriorly, the outer apical angles minutely subacute. Eyes

small, the head slightly exserted and distinctly constricted behind

them. Ocelli over twice as far apart as distance from an ocellus

JULY, 1938]

USINGER— SINORSILLUS

141

to inner margin of eye and over three times as far apart as dis-

tance to posterior margin. Bucculas scarcely elevated; long but

practically disappearing behind level of antenniferous tubercles,

defined posteriorly only by the rostral groove. Rostrum very long,

extending to posterior margin of fifth visible abdominal segment;

the first segment reaching well onto anterior portion of proster-

num; proportion of segments one to four as 15:16:16:11. Antennse

about as long as distance from apex of head to apex of scutellum;

first segment attaining apex of head, robust at least on apical

half; second and third slender, but slightly enlarged at apices;

fourth enlarged, fusiform; proportion of segments one to four as

5:10:9% :11. Pronotum a little longer than head on median line;

one-third broader behind than long; the disk scarcely declivous,

subflattened, moderately depressed immediately before and behind

callosities and just within humeral angles; callosities moderately,

broadly, and roundly elevated; lateral margins, gently, evenly

rounded anteriorly and scarcely sinuate before humeral angles;

obscurely carinate as seen from the side; posterior margin a little

convex before base of scutellum, sublaterally feebly depressed

and a little lamellate; anteriorly distinctly, rather densely punc-

tate except on callosities, more finely and sparsely punctate pos-

teriorly except for smooth posterior margin and raised humeral

angles. Scutellum over one-third broader than long; disk greatly

roughened even on the transverse, subbasal elevation, impunctate

apically on longitudinal carina and within apically upturned mar-

gins. Hemelytra reaching almost to tip of abdomen, entirely im-

punctate; commissure of clavus about as long as scutellum; costal

margins almost straight, subparallel basally, scarcely dilated be-

hind level of apex of scutellum, and then gently, roundly converging

posteriorly thus exposing a considerable portion of connexivum;

connexival margins moderately reflexed. Ostiolar canal very long,

extending about one-half the distance to outer margin of meta-

pleuron; produced apically as a narrow lobule which is rounded

at apex. Posterior margin of metapleuron broadly lamellate, a

little reflexed, and sinuate; postero-lateral angle rounded. Femora

moderately incrassate, unarmed.

Color fulvous over a great portion of the pronotum, hemelytra,

and abdomen with the following dark or fuscous markings: head,

except at middle of vertex and on either side beneath; anterior

lobe of pronotum surrounding callosities; scutellum except at ex-

treme apex; apex of clavus, especially along commissural margin;

apex of second antennal segment and the entire fourth segment;

apex of rostrum; entire under surface except for ochraceous aceta-

bula, posterior reflexed margins of metapleura, lateral margins of

venter; and apical tarsal segments. Eyes and femora ferrugineous.

Corium almost luteous. Membrane subhyaline, partially tinged with

a milky -white suffusion.

Length, 6 mm.; width (connexivum), 2.2 mm.

142

THE PAN-PACIFIC ENTOMOLOGIST [yoL. XIV. NO. 3

Holotype, male, No. 4674, C. A. S., Ent., collected by Mrs.

Dora E. Wright at Mokanshan, Chekiang Province, China, on

September 16, 1927.

This species is closest in size and general aspect to Orsillus

reyi Puton which, however, has a shorter rostrum, strongly spined

front femora, flatter pronotal disk, and paler coloration with a

suggestion of maculations on the connexivum.

A NEW RACE OF LYC^NA MARIPOSA (Reakirt)

(Lepid. Lycaenidae)

BY WILLIAM D. FIELD

Lawrence, Kansas

Recently I have had the opportunity of comparing three dif-

ferent series of Lyccena mariposa (Reakirt). One series was a

typical mariposa from Eldorado and Tuolumne counties, Cali-

fornia; one from various localities in thei Yellowstone National

Park, east of the Continental Divide; and the third from the

Teton Mountains, Wyoming. The Teton Mountains material

agrees very well with the typical insect but the Yellowstone ma-

terial shows a variation from the typical one. This variation is so

constant that I think it can safely be idescribed as a new race. If

it should prove later to be a new form, then the new name can

be used as a form name.

Lycaena mariposa penroseae Field, n. race

Male. Upper side: Darker than typical mariposa with the

same purplish irridescence. The dark borders are much wider than

in the typical butterfly. The latter butterfly was described as

having vestiges of fulvous anal lunules on the secondaries. There

are not even any vestiges of these lunules left in this race. Under

side: The grayish brown ground color found in typical mariposa

on the secondaries and on the apex of primaries is here much

darker, being greatly clouded with dark brown and blackish scales.

Female. Upper side: The primaries are quite similar to those

of the typical insect except that they are a little darker toward

the base of the wing. In the secondaries all of the fulvous spots

are entirely clouded over by dark brown, giving a uniform dark

brown color to the wings. Under side: Differs from mariposa

mariposa in the same way that the male differ with the addition

that all markings in female penrosex are larger and darker.

JULY, 1938]

FIELD— LYC^NA MARIPOSA

143

Holotype, $, Lake Eleanor, Yellowstone National Park, ele-

vation 8500 ft., July 21, 1936 (F. Martin Brown); allotype, 9,

same data ; paratypes, S , numbers 1 through 3 and 9 , numbers

4 and 5, same data; paratypes, numbers 6 and 7, Cub Creek,

Yellowstone N. P., 8500 ft., July 21, 1936 (F. Martin Brown) ;

paratype, $ , number 8, Virginia Meadows, Yellowstone N. P.,

8500 ft., July 21, 1936 (F. Martin Brown) ; paratype, 9, num-

ber 9, Mt. Washburn, Yellowstone N. P., July 22, 1936 (F.

Martin Brown) ; paratype, 9, number 10, Elkhorn Ranch, Mon-

tana, July 20, 1931. Paratypes numbers 3 and 4 in the author’s

collection. All other types are in the collection of F. Martin

Brown, Colorado Springs, Colorado. This butterfly is named

after Mrs. Spencer Penrose of Colorado Springs in acknowledg-

ment of her interest in Lepidoptera.

GEORGE RINGO WILSON

1885—1938

With the death in Alameda on June 11th, of George R.

Wilson, Associate Quarantine Entomologist with the Bureau of

Plant Quarantine, California State Department of Agriculture,

and Collaborator with the Bureau of Entomology and Plant

Quarantine, United States Department of Agriculture in San

Francisco, there passed an entomologist of rare ability, who,

due to his innate modesty was possibly not as widely known to

the outside world as he should have been, but whose loss will

be keenly felt by the services for whom he labored and by those

who knew him personally as a co-worker.

He was born in Mulberry, Kansas, January 11th, 1885, moving

to California a few years later. His normal early interest in

insects was continued later, culminating in his receiving the

degree of Bachelor of Science in Agriculture at the University

of California in 1910, with his major in entomology. Imme-

diately out of college he returned to his former home in Southern

California and became associated with the ofl&ce of the Horti-

cultural Commissioner of Riverside County as Entomologist and

Inspector. While he qualified himself for the position of County

Horticultural Commissioner in that county, he refused appoint-

144

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 3

merit, preferring to continue his entomological work. In 1917

he saw an opportunity to follow his inclinations further, and

accepted a position as Quarantine Inspector with the State De-

partment of Agriculture at the Port of San Francisco. Here also

he later qualified himself for appointment to Senior Inspector

in charge of the port, but again when opportunity offered shunned

the administrative duties in favor of his entomological work,

which he continued until his death.

Due to the fact that San Francisco until recently was one of

the only two authorized ports of entry for plant maerial from

foreign countries under a permit, a tremendous number of inter-

cepted insects from all parts of the world passed through his

hands for determination. The opportunities were abundant but

demanding; in fact, so demanding that he found little time to

record and publish his findings, with the result that a vast fund

of information on world species, distribution and hosts, which

he had at his finger tips, passed with him. He possessed an un-

canny entomological sense which allowed him to place innumer-

able intercepted specimens immediately to a point which even

the resources of the National Museum could carry little further.

His personal interests lay in the Coccidae and he found the

time to gather together both a private and an official collection

v/hich in number of species is exceeded by few others in this

country. He had in preparation at the time of his death a manu-

script covering his work in this group which it is hoped may

be in such shape that it can be offered for publication at a later

date.

He was a member of the Del Rey Fraternity, in which he

maintained an active interest; also of the American Association

of Economic Entomologists, the Entomological Society of

America and the Paeific Coast Entomological Society. He was

particularly active in the latter organization, never missing a

meeting or a field trip.

Quiet, reserved, keenly interested in matters outside his own

field, always helpful where opportunity offered, he will be deeply

missed and always remembered by his friends and co-workers.

— H. M. Armitage.

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Vol. XIV

October, 1938

No. 4

THE

Pan-Pacific Entomologist

CONTENTS

HATCH, COLEOPTERA OF ALEUTIAN ISLANDS 145

COCKERELL, A NEW BEMBECINE WASP 150

HATCH, M. H., and BEER, F. M., A NEW DICERCA 151

DRAKE, C. J., and HARRIS, H. M., A NEW RHAGOVELIA 152

BEAMER, R. H., TWO NEW ALLYGIANUS 153

JAMES, M. T., A SECOND SPECIES OF SCOLIOPELTA 156

ZIMMERMAN, E. C., IDOSAULUS, A NEW GENUS OF FIJIAN

CRYPTORHYNCHIN^ 158

CAZIER, M. A., A NEW CALIFORNIA POLYPHYLLA 161

BLAISDELL, F. E., A NEW LISTRUS FROM SEQUOIA

NATIONAL PARK, CALIFORNIA 165

MITCHELL, T. B., ON THE MEGACHILID SUBGENERA

XEROMEGACHILE AND DEROTROPIS 168

LINSLEY, E. G., LONGEVITY IN THE CERAMBYCID^ - 177

MICKEL, C. E., PHOTOPSOID MUTILLIDS, COLLECTED BY

K. A. SALMAN 178

Delong, d. m., three new species of texananus i85

LANE, M. C., A NEW SPECIES OF EANUS 188

PROCEEDINGS OF THE PACIFIC COAST ENTOMOLOGICAL SOCIETY 191

Published by the

Pacific Coast Entomological Society

in co-operation with

The California Academy of Sciences

San Francisco, California

1938

THE PAN-PACIFIC ENTOMOLOGIST

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The Pan-Pacific Entomologist

VOL. XIV, No. 4

October, 1938

REPORT ON THE COLEOPTERA COLLECTED BY DR.

VICTOR B. SCHEFFER ON THE ALEUTIAN

ISLANDS IN 1937

BY MELVILLE H. HATCH

University of Washington

The present paper is a report on the Coleoptera collected

by Dr. Victor B. Scheffer, of the United States Biological Survey

in connection with a Biological Survey expedition to the Aleutian

Islands, Alaska, in 1937. The number of specimens is given in

parentheses after the date of capture following the name of each

island. The previous Aleutian Island distribution of each species

is indicated. A star in front of a species shows a westward

extension of its previously recorded Aleutian Island distribu-

tion and a double star indicates its addition to the Aleutian

Island list. Of the 27 species listed, eight have not apparently

been recorded previously from the Aleutian Islands and eleven

have their distribution extended westward by the present records.

The 27 species constitute about one-fourth or more of the total

recorded Aleutian Island beetle fauna.

I am greatly indebted to the United States Biological Survey

for permission to study this interesting material.

Carabid.®

Scaphinotus {Brennus) marginatus Fisch. Sanak, Aug. 27

(I) ; Unalaska, July 8, Aug. 6 (4). Previously recorded from

Akutan, Unalaska, and Atka.

*Nebria metallica Fisch. Amchitka, July 19 (3). Previously

recorded from Akutan, Unalaska, and Atka.

^Nehria gregaria Fisch. Amlia, Aug. 12 (2) ; Semisopochnoi,

July 22 (2) ; Kiska, June 5, 21 (10) ; Little Kiska, June 22

(16). Previously reported from Unalaska.

* Pterostichus {Cryobius) ? empetricola Dej. Amlia, Aug.

12 (I); Amchitka, July 20 (2). Previously recorded from

Unalaska and Atka.

]^46 pan-pacific entomologist [vOL. XIV. NO. 4

Pterostichus (Cryobius) ? ventricosus Dej. Unalaska, July

8 (1). Previously recorded from Unalaska.

* Pterostichus (Bothriopterus) adstrictus Esch. Agattu, June

12 (1). Previously recorded from Unalaska and Atka.

Calathus micropterus Duft. {ingratus Dej,), Unalaska

July 14 (2). Previously recorded from Unalaska. Comparisons

I have made indicate the identity of the Nearctic ingratus with

the Palaearctic micropterus, giving the species a nearly circum-

polar distribution.

Pristodactyla advena LeC. var. lenis Mann. Amlia, Aug.

12 (1). Previously recorded from Unalaska and Atka.

Dytiscid^

* Hydro porus nigellus Mann. Kiska, June 5 (17) ; Agattu,

June 12 (14) ; Attu, June 10 (5). Previously recorded by Fall

(Rev. N. Am, Hydroporus 1923, p. 83) from Unalaska and

Atka. Two specimens from Kiska have the elytra glabrous and

somewhat paler and represent what is probably a mutant form

similar to that indicated below for H. griseostriatus DeG.

** Hydroporus tristis Payk. Unalaska, July 10 (6). Not

previously recorded from closer than Sitka.

^Hydroporus {Potctrrwnectes) gyiseostriatus DeG. Sanak,

Aug. 28 (17); Unalaska, July 10 (4); Agattu, June 12 (1).

Previously recorded from Unalaska. A single specimen from

Sanak belongs to the glabrous variety mathiasi Hatch (Bull.

Brook. Ent. Soc., XXVIII, 1933, p. 22) described from Wash-

ington.

Agabus irregularis Mann. Unalaska, July 8 (3). Pre-

viously recorded from Unalaska as hypomelas Mann. (cf.

Leech, Can. Ent., LXIX, 1937, p. 149).

Agabus infuscat'us Aube. Tanaga, Aug. 6 (6). Pre-

viously recorded from the Alaska Peninsula.

Ilybius 4-maculatus Aube. Unalaska, July 10 (6). Previously

recorded from Unalaska and Atka.

*Colymbetes dolobratus Payk. Unalaska, July 10 (2) ; Kiska,

June 5 (1); Agattu, June 12 (12); Attu, June 10 (6). Pre-

viously recorded from Unalaska and Atka. Undoubtedly the

same species as thati reported under this name from south central

Alaska by Hamilton (Trans. Am. Ent. Soc., XXI, 1894, pp. 14,

OCT. 1938]

HATCH— ALEUTIAN ISD. COLEOPTERA

147

359) and Van Dyke (Nat. Geog. Soc. Contrib. Tech. Pap. II,

1924, p. 14) . I am unable to distinguish the present series from

sculptilis Harr, from central North America, the characters pre-

viously cited by me (Hatch, Bull. Brook. Ent. Soc., XXHI,

1928, p. 325) not being valid. The pronotal and elytral sculp-

ture of the two sexes in the present series is nearly equal, that

of the pronotum being fine and more or less discontinuous except

in the male and female from Unalaska, where it is deep and in

part more or less reticulate.

**Dytiscus {Macrodytes) circumcinctus Ahr. Sanak, Aug.

28 (1). Also a single female from Cordova on the mainland.

Gyrinid.®

**Gyrinus opacus Sahib. Sanak, Aug. 20 (5) ; Attu, June

10 (13) A circumpolar species recorded from the Alaska

Peninsula.

Hydrophilid^

**Helophorus ? angustidus Mann. Unalaska, July 8 (1).

The alternate elytral intervals are elevated and wider than the

others, the striae deeply impressed with the intervals between

the punctures well impressed; pronotum with anterior angles

narrowly rounded, the side margins in front of the hind angles

feebly obliquely sinuate.

SlLPHID^

Lyrosoma opacum Mann. Gareloi, July 23 (6) ; Amchitka,

July 20 (3) ; Little Kiska, July 22 (5). Previously known from

Unalaska, Bogoslof, and Atka. Outside the Aleutian Islands it

is known from Afognak, St. George, St. Paul, and Behring

Islands and from Kamchatka, where, according to Van Dyke,

“it lives in the rotting kelp and is at times completely submerged

by the tides.”

**Necrophorus {Necroptor) investigator Zett. subsp. mari-

timus Guer. Sanak, Aug. 29 ( 1 ) . The single specimen at hand

belongs to the ah. massetti Hatch (Journal N. Y. Ent. Soc.,

XXXV, 1927, p. 358) described from the Queen Charlotte

Islands.

148

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 4

Catopid^

**Catops (Sciodrepa) basilaris Say. Gareloi, July 24 (16)

Previously known from the Alaskan mainland.

Staphylinid;e^

Creophilus maxillosus L. Attu, June 7 (7), on carrion.

Previously recorded from Unalaska and Atka. These specimens

belong to the typical form of the species which is not recorded

from North America outside of Alaska and Greenland. They

are distinguished from the subsp. villosus Grav. by the fact

that the pubescence of the posterior angles of the head, the

anterior angles of the pronotum, and the ventral surface of the

metathorax, especially the side-pieces, is black instead of grayish.

On the other hand, only the last two stemites of the abdomen

are conspicuously darker in maxillosus , whereas the last three

stemites are more or less evidently set with darker pubescence

in villosus. Villosus is represented in my collection from

Ketchikan, Alaska, and the Queen Charlotte Islands, British

Columbia, and from Washington, Idaho, California, Utah,

Kansas, Oklahoma, Louisiana, Iowa, Michigan, Ontario, and

New York. It is recorded in the literature from as distant points

as Labrador, Newfoundland, Florida, Cuba, Mexico, and Guate-

mala.

Hamilton (Trans. Am. Ent. Soc., XXI, 1894, pp. 19, 367)

regards the Aleutian and south central Alaskan form of maxil-

losus as var. hicinctus Mann., which Leng (Cat. Col. Am. N.

of Mex. 1920, p. 109), following the synonymy proposed by

Berahauer and Schubert (Col. Cat., 57, 1914, p. 398), calls var.

arcticus Er. But Ganglbauer (Kaf. Mitteleur. II, 1895, pp.

4I5-4I6) , who is apparently the last author to have made a sur-

vey of the situation, regards both arcticus and bicinctusi as

synonyms of maxillosus, nor can I detect any satisfactory basis

for distinguishing the Attu Island specimens from my short

series from central Europe.

In my series of villosus from Soap Lake, Washington, are

five specimens in which the pubescence of the apical portion of

the elytra and the hind margin of some of the abdominal ter-

^ Single specimens of each of two species of Atheta from Gareloi and Semi-

sopochnoi Islands remain unidentified.

OCT. 1938]

HATCH— ALEUTIAN ISD. COLEOPTERA

149

gites is golden brown rather than black, a condition which appears

to duplicate that described for the var. ciliaris Steph, in the

Palaearctic region and which may well be due to a homologous

mutation in the two regions. In the more strongly marked mem-

bers of the series the pale transverse fascia on the elytra is

almost completely obliterated by the golden pubescence, though

it does begin to appear in other specimens. Since it is not desir-

able to apply the same varietal name in two distinct subspecies,

I designate this form ab. ciliaroides nov. (type and four para-

types) .

**Baryodma (Eucharina) sulcicollis Mann. Semisopochnoi,

July 22 (3). Recorded from Kodiak Island and southeastern

Alaska.

Eurystethid.®:

*Eurystethus calif ornicus Mots. Amchitka, July 20 (1).

Recorded from the “Aleutian Islands” by Van Dyke.

Elaterid.®:

Ludius lobatus Esch.^ dark phase. Unalaska, July 14 (2).

Previously recorded from Unalaska.

SCARABAEID.®:

Aphodius {Agolinus) aleutus Esch. Unalaska, July 14 (1).

Previously recorded from Unalaska.

CURCULIONID^

* Lophalophus inquinatus Mann. Amchitka, July 20 (8) .

Previously recorded from Unalaska and Atka.

Bibliography

Hamilton, John. Catalogue of the Coleoptera of Alaska, with

the synonymy and distribution. Trans. Am. Ent. Soc., XXXI,

pp. 1-38, 1894.

Van Dyke, Edwin C. Coleoptera from the Pribilof Islands.

Proc. Cal. Acad. Sci., (4) XI, pp. 156-166, 1921.

Van Dyke, Edwin C. The Coleoptera collected by the Katmai

Expeditions. Nat. Geog. Soc. Contrib., Tech. Pap. II (1), 26 pp.

1924.

^Determined by M. C. Lane.

150

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 4

A NEW BEMBECINE WASP FROM SAN NICOLAS

ISLAND, CALIFORNIA

BY T. D. A. COCKERELL

When I visited San Miguel Island in July, 1937, I found a

fine species of Bembex visiting the flowers of Malacothrix

implicata Eastwood. It was readily determined as B. hamata

C. L. Fox, an insular endemic discovered by E. P. Van Duzee.

On San Nicolas Island in July, 1938, I found a large Bembex

occupying the same ecological position and quite common. It

was especially abundant on flowers of Frarikenia grandiflora

C. & S. close to the shore. I find that it is structurally very

close to B. hamata but quite different in the markings.

Bembex nicolai Cockerell, n. sp.

Male (type) : Length about 19 mm., anterior wing 13 mm.; sim-

ilar to B. hamata in the clear wings, venation, pubescence, and in

the large curved spine on second sternite (which is, however, more

produced apically), as well as in the character of the sixth ster-

nite, with a strong oblique central spine and a keel on each side.

The middle femora are strongly denticulate beneath. The antennal

segments seven to nine are feebly subdentate beneath. The head

is without light markings, except a small spot in supraclypeal

region, and a trace of banding along middle of inner orbits,

though the mandibles are light yellow except at base and apex,

in the manner of B. hamata. Thorax entirely black. Abdomen

shining black without light markings.

Female. Similar, but without the spines on the under side of

abdomen; clypeus and labrum cream color, the clypeus with or

without two widely separated black bars on upper part. Spot

between the antennae larger and bands along inner orbits con-

spicuous, often more or less bow-shaped; scape black; tergites

II to V with a sulphur-yellow mark on each side (visible from

above only at sides of V), and these meet successively smaller

yellow spots on the sternites. The legs are marked with light

yellow in both sexes on the apical part of the femora, the tibiae

in front (irregular on hind tibiae of female), and those of male

all black in front but with a pale hairy band behind, and the

tarsi in front. The tarsal spines are reddish, paler in the male.

The eyes of Bembex nicolai are blue in life. One female is very

small, about 13 mm. long but evidently the same species.

The type male and a female will be sent to the California

Academy of Sciences.

OCT. 1938]

HATCH & BEER— A NEW DICERCA

151

A NEW SPECIES OF DICERCA (BUPRESTIDyE)

FROM WASHINGTON

BY MELVILLE H. HATCH and FRANK M. BEER

University of Washington, Seattle

Dicerca hesperoborealis Hatch and Beer, n. sp.

Length 17-18 mm.; color bronze; pronotum from four-sevenths

to three-fifths as long as broad, the apex two-thirds as broad as

the base, about as broad at the middle as at the base, the sides

broadly arcuate in front, slightly sinuate behind, the hind angles

slightly acute, the median line broadly and coarsely punctately

sulcate, the sulcation bounded on either side by an elevated carina

which is smooth except for occasional coarse punctures, the lateral

portions of the disc coarsely punctured with elongate irregular

smooth areas forming two more or less broadly interrupted carinse;

elytra relatively finely sculptured with relatively inconspicuous

elongate smooth areas, the apices entire and strongly produced;

prosternum with two elongate smooth costae, the intervening sulcus

coarsely rugosely punctate; mesotibia unmodified in female, the

male with a prominent triangular tooth along the lower margin just

proximad of the middle, the distal margin of the tooth serrate; last

ventral abdominal segment with two elongate broad smooth costae,

the posterior margin of the segment in the male truncate with

the posterior angles produced to form large lobes or, in the female

tridentate, the median tooth as long as and narrower than the

lateral teeth.

Type female: Wawawai, Washington, IV-31-1933, I. W.

Bales, and allotype male, same data as type, V-14-1933, in Hatch

collection at the University of Washington. Paratype female:

Cle Elum, Washington, V-7-1933 (Wm. W. Baker), in collection

of Wm. W. Baker.

Distinguished from tenebrica Kby. {prolongata LeC.) by its

smaller size (length 19-22 mm. in tenebrica), by the possession

of two partially developed lateral costee on either side of the pro-

notum (absent in tenebrica) and by the fact that the median

tooth of the last ventral abdominal segment in the female is

equal in length to the lateral teeth (shorter in tenebrica).

152

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 4

A NEW RHAGOVELIA FROM CUBA

BY C. J. DRAKE and H. M. HARRIS

Ames, Iowa

Rhagovelia mira D, & H., sp. nov.

Rather large, brownish, with prominent pale yellow markings.

Antennae dark brown, the basal portion of segment I pale yellow;

proportions, I:II:III:IV=60 :30:35:31. Rostrum stout, extend-

ing to about middle of mesonotum; yellowish, the apex black.

Legs stout, rath|8r densely clothed with long hairs; anterior legs

with coxae, trochanters, and basal two-thirds of femora yellowish,

their tibiae not especially widened distally. Intermediate legs

dark brown, coxae and trochanters yellowish, apical tarsal seg-

ment distinctly longer than preceding. Hind legs extremely stout,

the coxae, trochanters and most of femora within yellowish; femora

enormously swollen, armed within with two rows of spines, the

spines much larger along distal two-thirds. Tibiae strongly curved,

beset within with stout spines, with a very large, stout spine

at apical fourth. Pronotum not covering mesonotum, much shorter

than broad, the hind margin broadly rounded; yellowish, the

anterior margin and apical half dark brown. Mesonotum yel-

lowish. Head convex above, yellowish brown, darker near eyes.

Abdomen dark brown, a large yellowish spot on each of last five

segments, the spots becoming larger distally. Connexivum yel-

lowish brown, the margins of the segments dark. Length, 4.60

mm.; width, 1.70 mm.

Holotype, apterous male, two apterous male paratypes,

and one teneral male, Sierra Maestra, Cuba, July 10-20, 1922,

3000-4250 ft., collected by C. H. Ballou and S. C. Bruner,

authors’ collection.

This species is easily recognized by its color, the greatly

inflated hind femora, and the nature of the pronotum. The

female and winged form are unknown.

The Fire at the Oregon State College

Prof. H. A. Scullen writes me that the recent fire at the Ore-

gon State College did not affect the building in which the ento-

mological collections are housed. This will be welcome news

to our western entomologists, as, in addition to the types, there

is much valuable material in the Oregon collection. — E. P. Van

Duzee.

OCT. 1938]

BEAMER— ALLYGIANUS

153

TWO NEW SPECIES OF ALLYGIANUS

(HOMOPTERA CICADELLID^)

BY R. H. BEAMER

Lawrence, Kansas*

Allygianus gutturosus (Ball)

Allygus gntturosa Ball, E. D., Can. Ent., XIII, p. 307, 1910.

This species, named from two males from Beaumont, Cali-

fornia, has not been retaken. The following description of

the male genitalia is taken from one of the males which is here

designated Lectotype.

Genitalia: Valve about twice as long as preceding segment,

triangular; plates wider at base than valve, about one and one-

half times as long, outer margins almost straight, narrowing

slightly to broad almost truncate apices which are slightly longer

on inner margin. Pygofer with a huge S-shaped hook at apex,

arising from inner margin near anal tube.

Allygianus merus Beamer, n. sp.

Resembling Allygianus va/rius, but vertex not so sharp, female

last ventral segment with posterior margin sharply excavated

near lateral margins, leaving a rather deep excavation with a

slightly arched bottom, and male pygofers narrowed to quite short

spines which merely curve toward each other. Length 6.25-7.5 mm.

Vertex in form about midway between A. gutturosus and A.

varius; length is to width between eyes:: 3.5:7. Elytra heavily

reticulate.

Color buff with frontal arcs of face visible on vertex from

above ; veins of elytra lighter, usually evenly bordered with

fuscous; venter salmon pink to stramineous.

Genitalia: Last ventral segment of female almost three times

as long as preceding; lateral margins with outer angles broadly

rounded, posterior margin sharply excavated on outer third to a

slightly produced median third. Male valve a little longer than

preceding segment, broad, sharply angular; plates scarcely

broader than valve at base, gradually narrowed to broad, angu-

larly truncate, apices, longest on inner margin; pygofers narrowed

to rather short black spines which curve gently in toward each

other.

Holotype male, allotype female, four male and one female

paratypes. Orange County, California, July 14, 1929, R. H.

♦Contribution from Department of Entomology, University of Kansas. All

types of new species in the Snow Collection. Illustrations by Miss Maxine

Graham.

154

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 4

Beamer; three males and four females, San Diego County, Cali-

fornia, July, 1929, P. W. Oman; three males and two females,

Alpine, California, July 5, 1931, E. D. Ball; one pair, Elsinore,

California, August 3, 1935, R. H. Beamer. Types in Snow

Entomological Collection, paratypes in United States National

Museum and collection of E. D. Ball.

Allygianus varius Beamer, n. sp.

Resembling Allygianus gutturosus Ball, hut vertex of male

decidedly more angular, the male plates longer and more slender

with rounded apices, and the pygofer hook not in the form of S

but just bent in and down. Length, 7 mm.

Vertex decidedly more angulate than in A. gutturosus, the

disc quite distinctly concave; median length is to the width be-

tween eyes:: 3.75:6.5. Elytra heavily reticulate. Ocelli on margin

of vertex, about two of their own diameters distant from eye.

General color butf. Vertex with dark frontal arcs, barely visi-

ble from above. Veins of elytra lighter, quite generally bordered

with fuscous.

Genitalia : Last ventral segment of female almost twice as long

as preceding, posterior margin angularly excavated to about one-

sixth length of segment. Male valve slightly longer than preceding

segment, angular; plates wider at base than valve, slightly nar-

rowed to rather broad, rounded apices. Pygofer narrowed to long

dark spines which curve down and toward each other instead of

making the large S curve as in A. gutturosus.

Holotype male, allotype female and numerous paratypes. Big

Bear Lake, California, July 26, 1932. Swept from Arctostapha-

lus sp.

Explanation of Plate

1. Allygianus gutturosus, head of male; la, view of male

valve and plates; lb, dorsal view of tip of abdomen showing

hooks on py gofers.

2. Allygianus merus male head; 2a, male valve and plates;

2b, ventral view of tip of abdomen of female; 2c, dorsal view

of tip of abdomen of male showing pygofer hooks.

3. Allygianus varius head of male; 3a, head of female; 3b,

ventral view of tip of abdomen of female; 3c, valve and plates

of male; 3d, dorsal view of tip of abdomen of male showing

pygofer hooks.

OCT. 1938]

BEAMER— ALLYGIANUS

155

156

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 4

A SECOND SPECIES OF SCOLIOPELTA

(Diptera, Stratiomyidae)

BY MAURICE T. JAMES

Colorado State College

The genus Scoliopelta was erected by Williston in 1885 for

the reception of a new species, S. luteipes, and has until today

been considered monotypic. In his original description, Willis-

ton placed this genus in the Beridinae, and Enderlein has fol-

lowed him in this respect. In the second edition of his Manual

of North American Diptera, Williston traces it in his tables to

both the Beridinae and the Clitellariinae, and in the third edition

he omits it from the Beridinae. The latter course can be justified

by the fact that Scoliopelta has only five abdominal segments,

if we do not count the terminal ones which are telescoped into

the fifth. This is true of the Clitellariinae in general. The genus

might be defined as clitellariine with certain beridine characters

(e. g., the six-spined scutellum, the antennal structure and cer-

tain details of wing venation are suggestive of the Beridinae) .

The best course to follow is to recognize it as a form interme-

diate between the two subfamilies, but placed in the Clitellariinae,

as that subfamily is usually defined.

Scoliopelta luteipes Will, is evidently of rather unusual

occurence. It has been recorded in literature from New Hamp-

shire, Vermont, Massachusetts, and New York, and I have seen

specimens from Tennesseei (Smoky Mountains, September I,

1933, C. L. Fluke). The type, from New Hampshire, is in the

Snow Entomological Collection of the University of Kansas. A

second species is described in this paper.

Scoliopelta grandis James, new species

Larger than S. luteipes', thorax brown dorsally, in contrast

to the shiny black abdomen; legs brownish; third posterior

vein (M3) extending to the wing margin, and the first and sec-

ond posterior veins do not meet at the point where they join

the discal cell.

Female. Head black. Front, vertex, and occiput shiny, the

face dull. Proboscis brown. Pile uniformly dense, short, mostly

OCT. 1938]

JAMES— SCOLIOPELTA

157

yellow. Front broad, its width above the antenn-se one and two-

thirds the width of each eye, as seen from the front. Eyes densely

clothed with short black pile. Antennae black; segments I and

II subequal. III to X fused into a flagellum which is twice the

length of the first and second segments combined; flagellum broad

at the base, gradually tapering to apex; its first annulus about

as long as the first antennal segment; second and terminal annuli

of the flagellum each somewhat shorter, the intermediate ones

very short. Thorax brown, somewhat more blackish On the

pleura, densely clothed with short yellow pile which, because of

its shortness, is inconspicuous; scutellum brown, its pile some-

what more conspicuous at the apex; six-spined, the median pair

of spines somewhat the longest. Legs brown, the knees and basi-

tarsi somewhat more yellowish. Halteres dull yellow. V/ings

light brownish, the veins brown; apex of discal cell, between the

origin of the first and second posterior veins, almost as long as

cross vein r-m; third posterior veins reaching the wing margin;

vein as in luteipes, long. Abdomen shiny black, with incon-

spicuous yellow pile. Length, 9.5 mm.

Holotype: female, Emigrant Creek Camp, Lane County, Ore-

gon, Aug. 17, 1935 (H. A. Seullen) . In the Oregon State Col-

lege eolleetion.

Observations on the Striding Habits of the Gerrid^

(Hemiptera)

This note is based upon careful observation of the striding

motions of two members of this family in a small stream in

Ravenna Park, Seattle, Washington. The stream was flowing

rapidly enough to make the Gerrids stride quite often against

the current to compensate for the distance lost by drifting. The

small anterior pair of legs apparently did not move. The middle

pair of legs, which are well developed, did all of the forward

propelling of the bug. The third, posterior, pair of legs served

exclusively as rudders to direct the forward course of the ani-

mal. I did not notice the posterior pair of legs ever being used

as anything but rudders when the animal was striding over the

surface of the water. — Robert Y. Pratt.

158

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 4

IDOSAULUS, A NEW GENUS OF FIJIAN

CRYPTORHYNCHIN^

(Coleoptera, Curculionidae)

BY ELWOOD C. ZIMMERMAN

Bernice P. Bishop Mtiseum

The generic name Idosaulus is here proposed for the recep-

tion of a new Fijian weevil closely allied to Deretiosus Pascoe,

1871.

In my paper, “On Lea’s Fijian Deretiosus” (Bishop Mus.

Occ. Papers, vol. 13, no. 7, 1937), I gave a key for the separa-

tion of the Fijian genera allied to Deretiosus. That key is now

amended to include Idosaulus.

Key to the Fijian Genera of the Deretiosus Group

1. Funicle of the antennae seven-segmented. 2

-. Funicle of the antennae six-segmented 3

2. Femora strongly toothed Deretiosus

-. Femora not toothed Idosaulus

3. Femora not toothed; third tarsal segment hilobed. ...Deretiodes

-. Femora toothed; third tarsal segment truncate distally and

not bilobed T eleodactylus

Deretiosus and its allies have the pectoral canal squamose

throughout, and the apex of the rostrum rests against the modi-

fied anterior part of the metasternum when at repose. There

is no raised mesoternal receptacle.

Idosaulus Zimmerman, new genus

Body densely squamose above and below. Head strongly con-

vex, concealed from above by the pronotum; the interocular area

as broad as the base of the rostrum. Rostrum somewhat com-

pressed dorso-ventrally, slightly arcuate. Antennae inserted near

the middle of the rostrum; the scape shorter than the funicle

excluding the club; the funicle seven-segmented, the first two

segments somewhat elongate, the first more bulky than the sec-

ond. Prothorax somewhat broader than long; postocular lobes

not very strongly developed, but concealing the eyes at repose;

dorsum fasciculate. Scutellum visible and prominent. Elytra

with fascicles and calli; finely striate; the intervals broad and

flat or slightly convex; base slightly sinuous and there broader

than the prothorax, the humeri prominent. Legs with the femora

edentate; tibiae straight and not carinate on the inner edge; armed

with a strong uncus arising from the outer apical angle, and at

OCT. 1938]

ZIMMERMAN— IDOSALUS

159

most with a minute denticle at the inner apical angle; tarsi with

the third segment bilobed, the fourth longer than the second and

third segments together. Sternum^ with the pectoral canal densely

squamose throughout, terminating in a cavernous receptacle in the

anterior part of the metasternum; fore coxae contiguous to the

mid coxae; mesosternum without very prominent tubercles before

the coxae ; metasternum about as long as the metocoxae between the

mid and hind coxae, the metepisternal suture distinct. Venter with

the sutures all distinct; ventrites I and II subequal in length along

the median line, II as long as the three following together, III and

IV subequal, V about at long as III plus IV.

Genotype: Idosaulus abditus, new species.

This genus is closely allied to Deretiosus, but it is distinct

from that genus because of its edentate femora, straight, non-

carinate tibiae, contiguous fore and mid coxae, and by the

cavernous structure of its metasternal receptacle. The fascicles

on the prothorax are not strongly developed as they are on

Deretiosus, and the lateral ones are less prominent than the discal

ones.

Idosaulus abditus Zimmerman, new species

Female. Derm dark reddish-brown, shining, normally com-

pletely concealed by the dense scaling on the body, the scaling

dusted with a light brownish incrustation; head and base of the

rostrum with fawn to dark brown scales, the crown usually with a

scattering of pale or white scales; prothorax with a broad, longi-

tudinal, median, white vitta extending from base to apex and

including the median and apical fascicles, bounded on either side

by a very dark brown or black, irregular vitta that extends from

the base to the apex between the median and lateral fascicles,

scaling on the sides brown and white intermixed; scutellum dark

brown; elytra with a rather irregular V of predominantly white

scales from the humeri to the suture between the second fascicles

on the third interval, the scales on the first and second intervals

from the base to the second fascicles on the third intervals almost

entirely white and continuous with the vitta on the prothorax,

but those on the sides, especially at the base, intermixed with

brown to very dark brown scales, with the first two intervals

predominantly very dark brown from between the second fascicles

on the third intervals to near the apex, elsewhere with scattered

patches of white and brown scales intermixed; legs with the

femora vaguely and indistinctly banded with white and brown

scales ; scaling below dirty white.

Head densely puctuate; the scaling very dense, the squamae

rather small and concave, with short, stout setae showing through.

Rostrum densely squamose and with small setae almost to the

160

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 4

antennae, shining and with small, dense punctures beyond the

antennae which are inserted just before the middle. Antennae

with the scape strongly clavate, as long as the first four funicular

segments; first funicular segment slightly longer than the second

and twice as broad, the second almost as long as three plus four

and not stouter, segments three to seven more or less subequal

in length but becoming broader distally; club as long as the pre-

ceding four segments together, bluntly ovoid, the first segment

making up at least one-half its mass. Prothorax one-seventh

broader than long (3.5:3), almost straight and parallel-sided from

the base to the middle, slightly constricted and thence broadly

rounded to the apex; base slightly sinuous; with six fascicles,

four across the middle and two at the apex, the discal pair most

prominent and not arising from prominent callosities, the apical

pair with loose setae; without a row of prominent setae along the

apical margin. Elytra five-eighths as broad as long, about two

and one-half times as long as the prothorax, base slightly sinuous,

subparallel-sided behind the roundly rectangular humeri to above

the second ventrite and thence broadly rounded to the apex;

striae fine, the punctures small but broader than the striae in the

basal half; interval I with several distinct pustules from before

the middle to the apex; II without erect setae or pustules; III

with a low, elongate callosity bearing the most prominent elytral

fascicle just behind the base, followed, at somewhat less than its

length, by a smaller callosity bearing a prominent but slightly

shorter fascicle, this followed, to about one-half its length, by a

fascicle about one-half its size, thence with pustules to the apex;

IV without pustules; V with a pustule near the base and with a

distinct fascicle on a line between the first two fascicles on the

third interval followed by pustules ; VII bearing the humeral callus

which is slightly fasciculate and followed by several pustules. Legs

very densely squamose and with stout, erect setae showing through ;

femora rather stout and not conspicuously clavate. Sternum

with the pectoral canal terminating as a V-shaped notch in the

metasternum at the hind margin of the metacoxae, the V-shaped

emargination overhanging and making the metasternal receptacle

cavernous; metastemum with an impressed line just behind the

anterior margin. Venter minutely reticulate, not conspicuously

punctate; the hind margin of the first ventrite sinuous and con-

cavely indented at the middle. Length, 4.2 mm.; breadth, 2 mm.

Fiji: Viti Levu. Holotype female, one paratype and one

abraded specimen collected from dead branches at Nandarivatu,

Tholo North, October 20, 1937, by Dr. J. M. Valentine, in

Bernice P. Bishop Museum, and two paratypes collected by Mr.

H. W. Simmonds at “Colo-i-suva, VIII-2-28, C 388” to be de-

posited in the British Museum.

OCT. 1938]

CAZIER— A NEW POLYPHYLLA

161

A NEW CALIFORNIA POLYPHYLLA WITH NOTES

CONCERNING THE VARIABILITY OF CERTAIN

CHARACTERS WITHIN THE GENUS

( Coleoptera — ScarabEeidse )

BY MONT A. CAZIER

University of California, Berkeley

I wish to express my thanks to the following friends for

assistance and loans of material in this group: Dr. E. G. Van

Dyke, E. P. Van Duzee, J. J. du Bois, A. T. McClay, E. S. Ross,

0. H. Schwab, K. L. Maehler, Hugh B. Leech, R. P. Allen and

E. R. Leach.

Polyphylla barbata Cazier, new species

Relatively small, robust; head black, clypeus rufous, elytra

dark blackish-brown; head, clypeus and pronotum densely clothed

with long brown hair, elytra sparsely clothed with long brown

hair. Head densely, shallowly punctate, punctures separated by

only one-third to one-fifth their own widths ; entire surface

densely clothed with long brown hair; margins around eye and

clypeal suture rather densely clothed with elongate, pointed

squamae, middle of front devoid of squamae; clypeus densely,

shallowly punctate, feebly concave, side margins narrowed at

base, expanded to apical angles which are rounded, apical margin

transverse, slightly prominent medially, surface densely clothed

with long brown hair, margins somewhat densely clothed with

uniform elongate, pointed squamae, middle portion devoid of

squamae; maxillary palpi with third segment the same length as

first, longer than second, bluntly pointed on inner side, without

impression; antennal club three times as long as funicle, about

twice as long as head. Pronotum about twice as long as head,

and about twice as wide as long; side margins serrate, obtusely

angulate at middle; quite closely, shallowly punctate, punc-

tures separated by about their own widths, a long brown hair

arising from anterior side of each puncture; median depressed line

densely clothed with elongate pointed white squamae; oblique sub-

lateral basal vittae sparsely, irregularly clothed with elongate,

pointed white squamae; side margins sparsely clothed with

elongate, pointed yellow squamae, remainder of surface with only

an occasional isolated elongate squama, basal margin densely

clothed beneath with long yellowish-brown hair. Scutellum with

median and lateral vittae composed of short, narrow squamae.

Elytra three times as long as pronotum, widest at apical third;

surface slightly rugose, ornamented with three irregular, more

162

THE PAN-PACIPIC ENTOMOLOGIST [yOL. XIV. NO. 4

or less broken, discal vittae and sutural stripe, besides the short

vittae which extend from the humeral umbones and are continued

posteriorly in the form of disconnected spots; squamae of the vittae

white, one-third as wide as long, those of the interspaces yellow,

narrower, more pointed and less dense than those of the vittae;

entire surface uniformly, sparsely clothed with long brown hairs

which are most abundant on humeri. Anterior tibiae bidentate,

all tarsi shorter than the tibiae; thoracic sternites densely clothed

with long brown hair; basal abdominal sternites black, apical one

and one-half segments dark brown, sparsely clothed with white

squamae except along posterior margin of each segment where

they are more densely arranged; long brown hair uniformly,

sparsely scattered over all segments; pygidium uniformly clothed

with short brown hair. The slender yellow scales are more dense

in the middle and at base, sparse laterally. Male genital seg-

ment sinuate just posterior to the narrowly expanded tip, cleft

for less than one-half its length.

Length 20 mm., width 9.7 mm.

Holotype male in the author’s collection. Taken at Mt.

Hermon, Santa Cruz Co., California, June 25, 1937, by Dr.

J. J. du Bois to whom the author is greatly indebted for the

privilege of studying and making known this distinct species.

Ten designated male paratypes bearing the same data as the

holotype, seven of which are deposited in the collection of J. J.

du Bois and three in the author’s collection. Two male para-

types collected at Mt. Hermon, California, July 7, 1922 (sand

hills) in the collection of the California Academy of Sciences.

The female is unknown.

The series before me presents little in the way of variation

except in color. One of the paratypes is light brown as in

sohrina but does not vary from the type otherwise. All remain-

ing paratypes are almost exact duplicates of the holotype.

In Casey’s key (1914) to the species of North American

Poljphjlla, harhata will key out with opposita from which it

differs by its generally darker color, more robust form, longer

antennae, shape of lateral margins of clypeus which are con-

tracted at base in harhata, longer and more dense hair on the

clypeus, head and pronotum, the presence of long brown hair

on the elytra, the reduced number of scales on the clypeus, head

and pronotum, the irregular sutural white line, the shorter tarsi

and the smaller size. The type locality of opposita was given

by Casey as “Oregon (a single example is so marked but per-

OCT. 1938]

CAZIER— A NEW POLYPHYLLA

163

haps erroneously)”. I have in my collection one male speci-

men that matches the description of opposita in every detail but

it was collected at Tuba City, Arizona, July 3, 1937, by Mr.

R. P. Allen. From adusta, which is the next species to follow

in Casey’s key, barbata can be distinguished by the presence of

long hair, the bicolored squamae on the elytra, the smaller size,

long antennal club, long and smooth last maxilary palpal seg-

ment and by the male genitalia which are more dilated apically

in barbata.

When Fall’s key (1928) is used, barbata will key out with

rugosipennis and sobrina, due to Fall’s use of the relative

length of the antennal club prior to dijfracta and opposita.

From rugosipennis it can at once be separated by its small size,

more irregular elytral vittas, long hair on pronotum and elytra,

shape of lateral margins of clypeus which are contracted basally

in hirsuta, irregular distribution of squamae on pronotum and by

the genitalia which is cleft for less than half its length. From

sobrina it can be distinguished by its smaller size, narrower

form, presence of long hair on pronotum and elytra, generally

darker color, shape of clypeus which does not have the lateral

margins contracted basally in sobrina., and the irregular elytral

vittae.

During the course of this study it has become apparent to

the author that many of the characters used in separating groups

and species in the keys are unreliable as specific or group dif-

ferences and it is with this in mind that the following remarks

on variability are given. These remarks are not made with the

intent of disabling the existing keys or to reflect on the work

of others but merely to point out to future workers that when

based on long series of one species some of the characters are

variable and should be used with care. No attempt will be

made to construct new keys as the material at hand is insufficient.

It is the author’s opinion that when a proper study is made a

long series of each species will have to be available for study

and it is hoped that the notes herein given will be of use in

supplementing a study of this nature.

In both Fall’s and Casey’s keys one of the primary char-

acters used is the dentition of the anterior tibiae. The triden-

tition is used to separate cavifrons and hammondi from the

164

THE PAN.?ACIFIC ENTOMOLOGIST [yoL. XIV. NO. 4

remainder of the species. Within a series of male hammondi

from Patagonia, Arizona, there are numerous specimens that

have no sign of the proximal tooth and others in which it is

either slightly evident or prominent. Among the so-called

bidentate species the males of arguta are frequently tridentate

as has been shown by others. The presence or absence of erect

hair on the disk of the pronotum is another character used to

separate major divisions. In a moderately long series of rugosi-

pennis that were all collected at the same time, under the same

conditions and that were not rubbed there are specimens with

evident long erect hair and others in which there is no sign of

hair. This species does not, however, have many erect hairs

so that it is not surprising that some should lack them com-

pletely. In arguta the males sometimes have very definite

erect hair on the disk which makes it very difficult to place this

species since it is associated with those that do not have the

hair. When the long erect hairs are as abundant as they are

in harhata and hirsuta Van Dyke, I think there is little doubt

as to their being specifically constant and of use both in defining

the species and in a key.

The squamose vestiture in this genus has been used in vari-

ous ways. The size, shape, color and arrangement of the squamae

has been used to separate certain species and is undoubtedly

of some use in certain cases, but if a series of decimlineata from

one locality is examined it will be found that the large squamae

of the pronotum and elytra grade gradually into fine narrow

squamae and then into hairs. This is true in a series from Davis,

California, that are at hand. In Fall’s key one of the char-

acters used to separate speciosa from decimlineata is that the

short line of white scales behind the humeral umbone is con-

tinued disconnectedly posteriorly in speciosa. In the set of

decimlineata before me there are both males and females that

have the line continued posteriorly. In one male specimen the

vittae are obscured on the basal half of the elytra by an almost

continuous mass of squamae occurring in the so-called inter-

spaces. This gives the vittae a very ragged appearance and since

other species show a good deal of variation along this line the

regularity of the vittae should be used with care also.

OCT. 1938]

BLAISDELL— A NEW LISTRUS

165

A NEW SPECIES OF LISTRUS FROM THE SEQUOIA

NATIONAL PARK, CALIFORNIA

(Coleoptera: Melyridae)

BY FRANK E. BLAISDELL, SR.i

Listrus regalis Blaisdell, new species

Form parallel-elongate to elongate-ovate, about three times as

long as wide, moderately convex. Color black, shining with a mod-

erate or slightly aeneous tinge, especially on the head and prono-

tum; second antennal segment usually pale, the following three

or four and distal part of tibiae and tarsi slightly rufo-piceous.

Pubescence of superior surface cinereous, not dense, somewhat

coarse and comparatively long. Maculation very noticeable, ely-

tral macules large, vested with sparse and very inconspicuous

brownish or black hairs, arranged as follows on each elytron: a

parascutellar and a marginal humeral, the latter more or less con-

nected with the post-basal at middle; a rather wide transverse

median fascia with irregular edges, extending more or less widely

along the suture about half-way to the albido-pubescent scutellum ;

a subapical fascia variable in width and with zigzag edges, usually

attaining the lateral margin and more or less' divided at middle;

apical macule very variable as to size, frequently uniting with the

one of opposite side and with the subapical fascia. Pale hairs of

head few and scattered; those of the pronotum reduced to a mini-

mum, the brownish hairs forming a large central clepsydriform

macule and lateral vittse, which are more or less feebly defined,

best observed when viewed obliquely. Pubescence of ventral sur-

face slender, recumbent and more or less plumbeocinereous in

color.

Head comparatively small, about two-thirds wider than long

before the post-ocular line. Frons plane, feebly and somewhat

broadly impressed anteriorly each side of a small median tumes-

cence at apex against the base of the obscurely defined epistoma;

punctures well defined, discrete, rather dense, the intervals less

than the width of the punctures, smooth or sparsely micro-

rugulose. Eyes prominent. Antennae about as long as width of

pronotum, length equal in the sexes and slightly different, feebly

compressed apically; segment II oval and less than twice as long

as wide; II to X inclusive equal in length; V larger, a little

longer than wide, subtriangular and most prominent anteriorly,

XI obovate and about one-half longer than wide.

Pronotum moderate in size, about one-fourth wider than long,

apex arcuato-truncate; sides more or less broadly arcuate, con-

tinuously so with the apex, marginal serrules small and acute,

^ Stanford Medical School and Associate in Research, California Academy of

Sciences, San Francisco, California.

166

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 4

fimbriae pale, moderate in length and directed arcuately backward;

base broadly arcuate, lateral or humeral sinuations distinct, basal

angles formed by the last marginal serrule; disk moderately

strongly convex, rather less so antero-laterally, densely punctate,

punctures well defined centrally and there the intervals are smooth,

more or less equal to width of punctures and somewhat sparsely

micro-rugulose, lateral third densely punctato-reticulate.

Elytra not quite twice as long as wide, three times as long as

the prothorax and more^ or less wider than the latter according to

sex; base broadly emarginate between the humeri, the latter large,

evenly arcuate and prominent; sides more or less parallel, rather

parabolically rounded at apex. Disk moderately convex, slightly

impressed laterally within the humeri, arcuately declivous later-

ally, precipitous at the humeri, more gradually and evenly, arcu-

ately declivous in apical one-third; densely and somewhat coarsely

punctate, not obscured by the pubescence ; marginal fimbriae similar

to those of the pronotum and shorter.

Abdomen moderately convex. Metafemora not swollen nor

arcuate, differing slightly in length in the sexes.

Male. Parallel; sides of elytra very feebly arcuate, little wider

than prothorax; subapical fascia conspicuous. Antenna a little

stouter, distal five segments less compressed, more oval in section;

second and third equal in length, the latter obconical and slightly

prominent anteriorly near apex; fifth noticeably larger and more

prominent anteriorly, about one-third longer than wide, sixth to

the tenth inclusive quite equal in length. Abdominal segments

II, III and IV equal in length, V a little longer, truncate at

apex and not modified on the disk. Metafemora a little longer.

Tibial spurs apparently all spiniform, the external not thickened.

Female. Usually larger and ovate. Pronotum more convergent

anteriorly. Elytra at base distinctly wider than the prothorax,

widest behind the middle. Antennae slightly less heavy, distal five

segments less thick in section; III slender, obconical, scarcely at

all more prominent anteriorly near apex, VII to X inclusive more

triangular. Abdominal segments II, III and IV equal in length,

V a little longer and arcuate at apex.

Measurements. (Types) Length 4-4.5 mm.; width 1. 5-2.0 mm.

Holotype, male, No. 4694, and allotype, female. No. 4695,

in the author’s collection. Museum of the California Academy of

Sciences. Collected May 30, 1937, in Sequoia National Park,

Tulare County, California, by John E. Blum of Piedmont, Cali-

fornia.

Nineteen paratypes: Five males, fourteen females; five in the

author’s collection: three to be deposited in that of the Ameri-

can Entomological Society of Philadelphia and eleven in that of

Mr. Blum.

OCT. 1938]

BLAISDELL— A NEW LISTRUS

167

Regalis is a very elegant species, on account of the ashy-white

pubescence and large black macules of the elytra, in these char-

acters it resembles elegantulus Blaisdell. In the latter the fifth

ventral abdominal segment of the male is modified on the disk,

the antennae of the female much more slender than that of the

male, the femora are more swollen and the metafemora longer,

moderately and arcuately adapted to the sides of the body.

In regalis the fifth ventral abdominal segment of the male is

truncate at apex and not modified on the disk, in the female the

antennae are but slightly more slender than those of the male,

the metafemora are not swollen, shorter and not arcuate or

feebly so.

The types are of moderate size, the sexes vary in size. It is

to be remembered that in the species of Listrus, not only do the

individuals vary in size, but that the maculation varies by dif-

fusion of the pale pubescence or by extension of the dark areas

with more or less coalescence, according to the inherent char-

acteristics of the species.

One Hour’s Collecting of Scaphinotus on Whidby

On May I, 1938, Mr. L. H. Duvall of Seattle, Washington,

and the author collected forty-two specimens of Scaphinotus

(Stenocantharus) angusticollis (Mann.) and fourteen Scaphi-

notus {Brennus) marginatus (Fisch.) in a radius of about three

hundred feet in and near the city park of Coupeville, Whidby

Island, Washington. All specimens were collected within one

hour and five minutes, between 1:30 p. m. and 2:35 p. m. All

of these were found under boards and old logs, with the pos-

sible exception of one specimen of Scaphinotus angusticollis

which I believe was collected under a rock. A number, perhaps

seventeen, of the Scaphinotus angusticollis and several Scaphi-

notus marginatus were found under three large boards which

were in contact with each other. It is very unusual to find such

a number of Scaphinotus angusticollis under one lot of boards —

the only time I have known of such an occurrence. The area

in which these specimens were collected is nearly all rather

open Douglas fir or predominating Douglas fir woods. Most of

the specimens collected were in moist places under the logs

and boards. — Robert Y. Pratt.

168

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 4

NOTES ON THE MEGACHILID SUBGENERA

XEROMEGACHILE AND DEROTROPIS

(Hymenoptera, Megachilidae)^

BY THEODORE B. MITCHELL

Since the publications of Parts and of the revision of

nearctic Megachile, a number of small collections have been

received for determination, resulting in a number of additional

records of several species, and the discovery of two previously

unknown species. One of these new forms, in Derotropis, was

recognized as such by Mr. P. H. Timherlake and sent to me

for description, and he is also to be credited with some addi-

tional information concerning the association of sexes in two

species of Derotropis .

Subgenus Xeromegachile Mitchell

Megachile (Xeromegachile) angelica Mitchell

California: 1^, Cajon Pass, April 13, 1936 (R. M. Bohart).

3 $ , Carrville, Trinity County, 2400-2500 feet. May 29-June 14,

1934 (G. E. Bohart and E. C. Van Dyke). 2S , Gold Lake, Sierra

County, July 19 and August 4, 1921 (C. L. Fox). 1^, Palmdale,

April 11, 1936 (G. E. and R. M. Bohart). 15, Shasta Springs,

July, 1914 (C. L. Fox). 35, Ventura County, April 13, 1936

(G. E. and R. M. Bohart).

Megachile (Xeromegachile) blaisdelli Mitchell

California: 2$, Laguna, San Diego County, June 7 and 23,

1926 (W. S. Wright). 12, Laguna Mountains, June 29, 1921.

12, Mammoth, July 5, 1933 (G. E. and R. M. Bohart). 3 2, Mint

Canyon, Los Angeles County, April 26, 1936 (E. G. Linsley, on

Chaenactis glabriuscula) . 12, Trinity County, June 13, 1934

(G. E. and R. M. Bohart).

Megachile (Xeromegachile) brimleyi Mitchell

North Carolina: 15, 2 2, 10 mi. S. of Lillington, June 23,

1937 (Mitchell).

Megachile (Xeromegachile) bruneri Mitchell

California: 15, Owen’s Valley, Inyo County, August 2, 1936

(G. E. and R. M. Bohart).

^ Research Contribution No. 1, published with the aid of the State College

Research Fund, Department of Zoology, North Carolina State College of Agri-

culture and Engineering of the University of North Carolina.

^ Trans. Am. Ent. Soc., LXII, 117-166, 1936.

3 Op. cit., 323-382, 1937.

OCT. 1938]

MITCHELL— MEGACHILE

169

Megachile (Xero megachile) casad.®: Cockerell

Colorado: 1^, 1$, Poudre Canyon, June 9, 1934 (M. K.

Maehler).

Texas: 2$, Austin, May 8, 1901 (A. L. Melander).

Utah: 1^, St. George, May 27, 1935 (E. C. Van Dyke).

Megachile (Xeromegachile) dakotensis Mitchell

Illinois: 1$, August 1, 1898 (nOi locality given) (A. L.

Melander) .

Minnesota: 1$, Anoka County, June 24, 1933 (E. C. Murdock).

Nebraska: 2$, 1$, Harrison, July 2, 18, and 19, 1936 (J.

Player).

Megachile (Xeromegachile) deflexa Cresson

North Carolina: 3$, 10 mi. S. of Lillington, June 23, 1937

(Mitchell) .

Megachile (Xeromegachile) fucata Mitchell

Arizona: 2$, Tucson (A. Koebele).

Megachile (Xeromegachile) hilata Mitchell

California : 1 $ , Glacier Lodge, Big Pine Creek, Inyo County,

8,000-11,000 feet, August, 1929 (Isabel McCracken). 1$, Hat

Creek, Mono County, August 1, 1936 (G. E. and R. M. Bohart).

Utah: 1$, Logan, July 20, 1931 (W. Thomas).

Megachile (Xeromegachile) histrata Mitchell

California: 1$, Palm Springs, Riverside County, April 9,

1936 (on Larrea glutinosa).

Colorado: 1$, Livermore, July 15, 1900.

Megachile (Xeromegachile) Integra Cresson

Illinois: 2$. (No locality given) (A. L. Melander).

North Carolina: 1$, 13$, Carolina Beach, August 7 and 10,

1937. 1 (J , 1 $ , 10 mi. S. of Lillington, June 23, 1937 (both Mitchell).

Megachile (Xeromegachile) legalis Cresson

Colorado: 1 (J , Lump Gulch, near Gilpin, August 8, 1934 (H. G.

Rodeck) .

Megachile (Xeromegachile) manifesta Cresson

California: 1$, Carson Pass, 8,000 ft.. Sept. 2, 1934.

Colorado: 2$, Fort Collins, Sept. 21, 1930 and Oct. 5, 1935.

170

THE PAN-PACIFIC ENTOMOLOGIST [yoL. XIV. NO. 4

2$, 6$, Masonville, Sept. 5 and 6, 1934. 1$, Vir. Dale, Aug.

2, 1935 (all M. T. James).

Wyoming: 3 2, Cheyenne, Aug. 6, 1931.

Megachile (Xeromegachile) micheneri Mitchell

California: 3^, San Diego. (S. D. Nat. Hist. Mus.)

Megachile (Xeromegachile) moschata Mitchell

California: 12, Laguna, San Diego> County, June 7, 1928

(W. S. Wright). 2 2, Laguna Mountains, June 29, 1921. 12,

Mint Canyon, Los Angeles County, Apr. 26, 1936. (E. G. Linsley,

on Chsenactis glabriuscula) . 3 2, no data.

Megachile (Xeromegachile) mucorosa Cockerell

Colorado: 1 $ , Larimer County, July 19 (M. T. James).

Megachile (Xeromegachile) nevadensis Cresson

California: 3$, 32, Antioch, Contra Costa County, Sept. 6,

9 and 13, 1936 (E. C. Van Dyke and R. M. Bohart). 1^, Carson

Pass, Sept. 3, 1933 (G. E. and R. M. Bohart). 1$, Hay Creek,

Mono County, Aug. 1, 1936, 1 $ Lake City, Modoc County, Aug.

2, 1922 (C. L. Fox). 4 (J , Mammoth, Mono County, Aug. 7, 1936

(G. E. and R. M. Bohart). 1 2, near Oakley, Contra Costa County,

Sept. 6, 1936 (E. C. Van Dyke). 1^, Owen’s Valley, Inyo

County, Aug. 2, 1936 (G. E. and R. M. Bohart). 5 2, San Diego.

(S. D. Nat. Hist. Mus.).

Idaho. 1 $ , Ridgedale, Aug. 23, 1915.

Oregon: 2$ , 10 mi. E. of Prineville, Aug. 20, 1937 (Bolinger-

Jewett) .

Washington: 12, Yakima (A. L. Melander).

Megachile (Xeromegachile) parksi Mitchell

Texas: 12, May. 12 Austin (both A. L. Melander).

Megachile (Xeromegachile) pseudonigra Mitchell

California: 12, Midway, May 24, 1936 (M. Cazier). 2 2,

Mint Canyon, Los Angeles County, Apr. 26, 1936 (E. G. Linsley,

on ChsBnactis glabriuscula).

Megachile (Xeromegachile) rubi Mitchell

North Carolina: 2$, Raleigh, May 9, 1937 (Mitchell).

Megachile (Xeromegachile) subnigra Cresson

Oregon: 12, Cornucopia, 7100 ft., July 25, 1936. 1$, 25

OCT. 1938]

MITCHELL— MEGACHILE

171

mi. E. of Prineville, 3800 ft., July 13, 1936 (both H. A. Scullen).

1$, Steen Mountains, Harney County, June 25, 1922 (E. C. Van

Dyke).

Washington: 1$, Grand Coulee, Coulee City, June 25, 1902,

3$, Lind, June 1, 10 and 12, 1919 (F. W. Carlson). 1^, Pull-

man, May 21, 1921 (Walter Herreid).

Megachile (Xeromegachile) wheeleri Mitchell

California: 1^, Antioch, Sept. 6, 1936 (G. E. Bohart). 12,

Bird Lake, Tulare County, Aug. 21, 1933 (Isabel McCracken).

1^, Buck Creek, Modoc County, July 21, 1922 (C. L. Fox). 1^,

6 2 , Diamond Lake, Douglas County, Oregon, 5182 ft., Aug. 24,

1937. 1 S , near Harden Lake, Yosemite Park, July 20, 1930 (E. C.

Zimmerman). 1^, 12, Lick Creek, R. S. Wallawa Nat. For.

Ore., 4600 ft., Aug. 16, 1937. 1 ^ , 12, Mineral King, Aug. 2,

1935 (G. E. Bohart). 2$, Spark’s Lake, Deschutes Nat. For.

Ore., 4800 ft., Aug. 21, 1937 (all Bolinger- Jewett). 12, Tioga

Pass, 10,000 ft., Aug. 2, 1931 (E. R. Tinkham).

North Dakota: 12, Dickerson, July 20, 1936. 12, Garrison,

Aug. 17, 1935 (both H. S. Tolford).

Oregon: 2$, Mt. Hood, 3000-6000 ft., Aug. 6, 1925 (C. L.

Fox). 12, Seneca, July 24, 1935 (Joe Schuh). 3^, 12, Steen

Mountains, Aug. 6, 1936 (S. Jewett, Jr.). 1$, Strawberry Lake

to Slide Lake, Grant County, 6800-7000 ft., July 16, 1936 (H. A.

Scullen) .

Washington: 22, Hells Crossing Forest Camp, Yakima

County, July 27, 1936 (E. C. Van Dyke).

Megachile (Xeromegachile) couleeana Mitchell, n. sp.

Female. Size: Length 14 mm.; breadth of abdomen 5 mm.;

anterior wing 10 mm.

Structure: Face very slightly broader than long; eyes sub-

parallel; clypeal margin straight and entire medially; mandible

4-dentate; basal joint of flagellum very slightly longer than the

pedicel or the second joint which are subequal; lateral ocelli sub-

equally distant from eyes and edge of vertex; vertex slightly in-

curved, slightly convex; cheeks very slightly broader than eyes;

metatarsi only slightly shorter and narrower than their respec-

tive tibiae; abdomen broad, second to fourth terga grooved basally,

fifth not grooved, sixth straight in profile, with no visible erect

hairs.

Puncturation : Close and fine on vertex, cheeks, supraclypeal

area and clypeus above; slightly more coarse on clypeus below,

the margin impunctate, shallow and indistinct on cheeks ; fine

172

THE PAN-PACIFIC ENTOMOLOGIST [yoL. XIV. NO. 4

on dorsum of thorax, definitely separated in center of mesonotum

and scutellum, the surface tesselate and dull, slightly more coarse

and close on pleura, becoming still more coarse toward sternum;

minute and indistinct on abdomen basally, becoming more definite

and rather widely separated to the shining fifth tergum, fine and

crowded on the sixth, but obscured by the tomentum.

Color : Black, antennae beneath, tegulae and legs dark reddish-

fuscous ; wings fusco-hyaline, slightly darker apically, with brown-

ish-ferruginous nervures; spurs yellowish-ferruginous.

Pubescence: Entirely pale, white on sides and below, more

cream-colored above, with no visible dark hairs on vertex, thorax

or abdomen (dorsum of thorax mostly denuded) ; first to fifth

abdominal terga with entire white apical fasciae, the sixth entirely

covered with subappressed whitish tomentum which largely hides

the surface; scopa entirely white except for a few short golden

hairs apically.

Type, female; Soap Lake, Grand Coulee, Washington, June

29, 1902 (Wash. State College).

In my key to the species of Xeromegachile this runs to either

rubi or hilata. The peculiar ridged sixth tergum of the eastern

species rubi at once distinguishes the two, while hilata differs

in the presence of erect pubescence on the sixth tergum, the

presence of dark pubescence on vertex, mesonotum and abdom-

inal terga, as well as in other less conspicuous characters.

Subgenus Derotropis Mitchell

In the revision of the subgenus Derotropis^, two species,

astata 9 and pascoensis ^ , were associated because of the belief

that they represented the two sexes of one species. Further col-

lecting by Mr. Timberlake, who originally suggested the asso-

ciation, has caused him to regard this as an error. He finds

in his collecting that gravita S and gabrielensis 9 are also in-

volved, and that apparently astata should be associated with

gravita, and gabrielensis with pascoensis. He notes a structural

similarity between the respective males and females thus asso-

ciated in that the relative lengths of the first and second joints

of the labial palpi are the same in the two sexes in each case,

and finds also that the mesosternum of astata is slightly con-

cave and sparsely punctate, suggestive of the more extreme con-

dition of the mesosternum of gravita.

Since corresponding with Mr. Timberlake, I have carefully

measured the labial palpi of these forms and find the ratio of

OCT. 1938]

MITCHELL— MEGACHILE

173

the first to the second joint of the labial palpus in both gravita

and astata to be approximately 70:98, while in both pascoensis

and gabrielensis it is 60:85. This structural evidence, coupled

with the fact that these respective sexes can be associated in the

field indicates rather conclusively that this association is the

correct one.

Megachile (Derotropis) pascoensis Mitchell

Megachile (Xeromegachile) 'pascoensis Mitchell, Trans. Am. Ent.

Soc. LIX, p. 320, 1934.

Megachile {Xeromegachile) gabrielensis Mitchell, Trans. Am. Ent.

Soc. LIX, p. 346, 1934.

Megachile {Derotropis) pascoensis Mitchell, Trans. Am. Ent. Soc.

LXII, p. 162, 1936.

Megachile {Derotropis) gabrielensis Mitchell, Trans. Am. Ent. Soc.

LXII, p. 159, 1936.

California: 1$, Altadena, May 2, 1936 (Michener, on Lotus

scopari'us). B$, Antioch, Apr. 25, 1936 (M. Cazier). 1$, Mid-

way, May 24, 1936 (M. Cazier). 2$, Mineral King, July 31, 1935

(G. E. and R. M. Bohart).

Megachile (Derotropis) gravita Mitchell

Megachile {Xeromegachile) gravita Mitchell, Trans. Am. Ent. Soc.

LIX, p, 322, 1934.

Megachile {Xeromegachile) astata Mitchell, Trans. Am. Ent. Soc.

LIX, p. 345, 1934.

Megachile {Derotropis) gravita Mitchell, Trans. Am. Ent. Soc.

LXII, p. 160, 1936.

Megachile {Derotropis) pascoensis 2 Mitchell, Trans. Am. Ent.

Soc. LXII, p. 162, 1936.

California: 2 2, Lagunitas, July 15, 1928 (E. P. Van Duzee).

1 $ , Midway, May 24, 1936. 1 $ , Nipinnawasee, May 24, 1936 (both

M. Cazier). 12, Potwisha, Sequoia Nat. Park, 2000-5000 ft.. May

20, 1929 (E. C. Van Dyke).

Oregon: 32, Prospect, June 20, 1924 (C. L, Fox).

Megachile (Derotropis) alamosana Mitchell

Colorado: 1 $ , White Rocks, Valmont, June 30, 1934 (M. and H.

James). 1^ , Longmont, July 4, 1937 (L. Lanham).

Megachile (Derotropis) laurita Mitchell

Washington: 12, Asotin, May 20, 1923 (V. Argo).

174

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 4

Megachile (Derotropis) laurita var. semilaurita Mitchell

Utah: 12, Dolomite, May 18, 1934 (G. F. Knowlton).

Megachile (Derotropis) subanogree Mitchell

Texas: 1$, Sierra Blanca, Apr. 30, 1927 (J. 0. Martin).

Megachile (Derotropis) xerophila Cockerell

California: 3^, 4 2, Edom, Riverside Co., Mar. 28, 1936 (on

Geraea canescens and Larrea glutinosa) .4^,2 mi. S. of Edom,

Mar. 8, 1936 (on Geraea canescens). 1$,Q mi. S. of Edom, Mar.

8, 1936 (on Larrea glutinosa, all E. G. Linsley). 1^,5 mi. S. of

Indio, Apr. 10 (Michener, on Prosopis juliflora) . 1 $ , Little Rock,

Oct. 10, 1936 (G. E. and R. M. Bohart). 12, Palm Springs, River-

side Co., Apr. 10, 1936 (Michener, on Cercidium torreyanum) .

On page 165 of the revision^ xerophila is recorded on Helian-

thus niveus. Mr. Timberlake states that this plant was misidenti-

fied, the correct name being Geraea canescens.

Megachile (Derotropis) astragali Mitchell, new species

The male of this species is the only one so far known in

Derotropis with entirely simple anterior tarsi, and it differs also

from the other males in the group in the lesser degree of specili-

zation of the retracted fifth sternum. In the males of gravita,

pascoensis, and others the fifth presternite has a conspicuous

median spine-like apically directed protuberance which more or

less fits into an emargination of the basal margin of the meta-

sternite. This condition is entirely lacking in astragali, indi-

cating, together with the simple front tarsi, that it is the least

specialized of all the known species in the group.

The female runs to subanogree in the key\ but differs from

that species in the presence of pale pruinosity on the sixth ter-

gum, as well as in other less evident details.

The second joint of the labial palpus is one and a half times

the length of the basal joint in both sexes.

Male: Length 8 mm.; breadth of abdomen 3 mm.; anterior

wing 6 mm.

Structure : Face slightly broader above than long ; eyes slightly

OCT. 1938]

MITCHELL— MEGACHILE

175

convergent below; clypeal margin straight and entire; inferior

projection of mandible subbasal, narrowly triangular; basal joint

of flagellum narrower and slightly longer than the subequal pedi-

cel and second joint, the remaining joints broader, only slightly

longer than broad; lateral ocelli very slightly nearer to edge of

vertex than to eyes; vertex nearly flat; cheeks broader than eyes;

front coxal spines short, broad basally, triangularly acute, a small

patch of short red bristles at base of each; front tarsi simple;

hind metatarsus only half as long and broad as its tibia, the apical

joint nearly as long as the metatarsus; apical margins of abdom-

inal terga slightly depressed; carina of sixth tergum broadly

rounded, with two or three slight irregular crenulations, the

median carinate teeth of the apical margin of the tergum widely

separated, close to the subacute lateral teeth; seventh tergum

broad and quite robust, triangularly pointed medially.

Sternites : Lateral portions of fifth presternite triangular,

broader than long, median portion linear in the much restricted

central area, not at all protuberant, the apical sclerites nearly

circular, covered in part with fine pubescence, metasternite rather

widely separated from the presternite by a broad membraneous

area, basal margin evenly rounded, entire, lacking any median

emargination, uniformly covered with short apically dilated setae,

poststernal stripe inconspicuous, the margin slightly incurved

medially; lateral portions of sixth presternite much longer than

broad, metasternal areas triangular, rather widely separated

medially, uniformly covered with short apically flexed and dilated

setae, prosternal lobe nearly twice as broad as it is long, the

margin slightly incurved, lateral angles subacute.

Genital armature: Stipites rather slender, gradually and

slightly enlarged to the tip, the tip with a thin tuft of short pubes-

cence; sagittae slightly exceeding the stipites in length; volsellae

narrowed apically, the tips truncated.

Puncturation : Moderately coarse and distinct, but quite close

on vertex medially and on cheeks, more sparse on vertex laterally,

very fine and close on face and clypeus; close and deep on pleura

and on mesonotum laterally, becoming sparse medially on meso-

notum and scutellum, the surface polished; fine and close on the

basal abdominal tergum and on the median terga laterally, but

sparse and indistinct on discs medially, the surface polished, more

coarse on the fifth, dense on the sixth medially, more sparse

laterally.

Color: Black; anterior face of front femur ferruginous, legs

otherwise black, claws and spurs ferruginous; tegulae pale fer-

ruginous, anterior portion blackened; wings hyaline, violaceous,

nervures fuscous to ferruginous.

176

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 4

Pubescence: Entirely white, long and dense on face and on

cheeks below, long and quite copious on vertex and thorax; thin

on abdominal terga, but with white apical fascise on all the seg-

ments, these thin on the more basal ones; tarsi beneath with

brownish-ferruginous pubescence.

Female. Size: Length 9 mm.; breadth of abdomen 3 mm.;

anterior wing 6 mm.

Structure: Face about as broad as long; eyes nearly parallel;

clypeal margin outcurved, median portion straight, entire; man-

dible with two distinct apical teeth, cutting edge to the inner

angle rather short (compared with gabrielensis ) ; joints of flagellum

about as broad as long, the basal one slightly longer; lateral

ocelli very slightly nearer to edge of vertex than to eyes; vertex

about flat; cheeks somewhat broader than eyes; all the meta-

tarsi considerably shorter and narrower than the respective tibiae;

abdominal terga only slightly depressed apically, the second to

fourth more deeply depressed basally, the sixth straight in pro-

file, the sides straight in dorsal aspect, the apex rather narrowly

rounded.

Puncturation : Deep and distinct, but close on vertex medially,

cheeks above, pleura above, and mesonotum laterally, more sparse

on vertex laterally, cheeks and pleura below, and on scutellum,

quite sparse on mesonotum medially where the surface is polished ;

coarse, deep and distinct on clypeus, close and fine along' upper

margin, quite fine and close on face above clypeus; close and fine

on basal and apical abdominal terga, and on the others laterally.

Male sex characters of Megachile (Derotropis) astragali n. sp.

Fig. 1. Fifth sternum. Fig. 2. Sixth sternum. Fig. 3. Eighth

sternum. Fig. 4. Ventral, dorsal and lateral views of genital

armature.

OCT. 1938]

MITCHELL— MEGA CHILE

177

but the discs of the median terga with fine, sparse and rather

indistinct punctures medially.

Color: Black; spurs and claws ferruginous; tegulae pale fer-

ruginous, a small anterior portion blackened; wings hyaline, vio-

laceous, nervures piceous.

Pubescence: Entirely white on head, thorax, first and second

abdominal terga and legs except for under side of tarsi where it

is brownish; black on discs of third, fourth and fifth terga, the

first to the fifth with entire dense white apical fasciae, the sixth

covered with thin silvery pruinose hairs, with no dark hairs in

evidence; scopa white, entirely black on fifth and sixth sterna.

Type. Male: Mojave Desert, 9 miles north of Adelanto, San

Bernardino County, California, April 20, 1937 (C. M. Dammers,

on Astragalus lentiginosus var. fremontii). Allotype: Female,

topotypical. Paratypes : 3 ^ , topotypical.

Longevity in the Cerambycid.®:.

Scattered through entomological literature are a few brief

accounts of adult Cerambycidae emerging from wood which had

been made up into furniture for several years. Since the im-

mature forms of the majority of longicorns require a bark cov-

ering during their early life history, this is generally interpreted

as evidence that larvae were in the wood prior to its manufacture

as furniture. Unfortunately, there are very few statements as to

the actual period of time involved, and, where native species

were involved, perhaps some uncertainty as to when they entered

the wood. It would therefore seem of interest to report that Mr.

P. C. Ting has recently submitted for determination adults of

Stromatium fulvum Villers, a European species, which had

emerged from furniture brought to this country from Italy in

1925. An investigation revealed that several benches imported

in a single lot had been distributed to various places in San

Francisco. Apparently nearly all of the benches were infested

and adults emerged in October 1935, July 1937, and August 1938,

with larvae still present in some numbers. This furniture had

been newly manufactured just prior to its export from Italy in

1925 and it seems quite clear that the larvae must have been in

the wood for periods of ten, twelve, and thirteen years, respec-

tively. — E. Gorton Linsley.

178

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 4

PHOTOPSOID MUTILLIDS COLLECTED BY DR. K. A.

SALMAN AT EAGLE LAKE, CALIFORNIA.

(Hymenoptera) *

BY CLARENCE E. MICKEL

University of Minnesota

Dr. K. A. Salman, Berkeley, California, had the unusual

experience of observing a flight and the mating of a species of

Photo psis at Eagle Lake, Lassen National Forest, Lassen County,

California, July 30 and 31, 1936. He collected several pairs

in copulation and a series of both males and females. The

material was sent to me for study and proved to be a new species,

the male closely related to pedatus Baker and the female to

pygmaea Blake. Baker’s type of pedatus has been available

for comparison. One specimen of a second species of male,

Odontophotopsis, and three specimens of a second female were

also collected, but not in copula. It is probable that this sec-

ond male and female are the two sexes of one species, but since

this is not certain they are described separately. I am pleased

to acknowledge my appreciation to Dr. Salman for the privilege

of studying and describing this material.

Photopsis salmani Mickel, n. sp.

Male. Ferruginous throughout, except the scape yellow, the

flagellum fuscous, the integument beneath felt lines of second

tergite black, and the legs only slightly paler than the body, almost

concolorous; clothed throughout with pale, sparse, erect hairs,

except the front, vertex, mesonotum, scutellum and second abdo-

minal tergite with the hairs very pale ferruginous; second tergite

with a thick fringe of pale, plumose hairs at the posterior margin,

the remaining tergites with thin fringes of similar hairs; man-

dibles edentate at the tip and with two small teeth just within

from the tip, with a strong carina the entire length on the dorsal

surface, strongly emarginate beneath, forming a blunt tooth

subtending the emargination proximally; clypeus considerably

depressed below the dorsal surface of the mandibles, its sur-

face slightly concave, the posterior margin without a median

tubercle; scape shallowly punctate, with a weak, longitudinal

carina anteriorly; first segment of flagellum four-fifths the length

of the second; antennal scrobes carinate on the inner half, with

a small, transverse tubercle slightly anterior to the outer end of

*Paper No. 1612 of the Scientific Journal Series of the Minnesota Agricul-

tural Experiment Station.

OCT. 1938]

MICKEL— PHOTOPSIDS

179

the Carina; front with a shallow, median sulcus extending from a

small pit anterior to the median ocellus to a point between the

antennal tubercles; front, vertex and gense with small, sparse

punctures; ocelli large, the distance between the eye margins and

the lateral ocelli equal to about one and one-half times the greatest

diameter of the latter; lateral areas of pronotum distinctly reti-

culate, the median area with moderate punctures ; mesonotum with

parapsidal furrows distinct their entire length, and with moderate,

separated punctures throughout; scutellum coarsely reticulate, the

meshes small; enclosed area of dorsum of propodeum consisting of

a pair of elongate, subovate areas, each area about twice as long

as wide; dorsum of propodeum evenly rounded into the posterior

face and both broadly, distinctly reticulate except the enclosed area,

the meshes large; propleurse not defined anteriorly by a carina,

rugoso-punctate ; ventral area of mesopleurse distinctly reticulate;

dorsal area of mesopleurse with small, sparse, weak punctures,

except the posterior margin behind the ridge closely, moderately

punctate; metapleurse glabrous, impunctate; sides of propodeum

glabrous, weakly, indistinctly reticulate; mesosternum entirely un-

armed ; tegulse small, convex, glabrous, impunctate, except the

inner margin punctate and with ferruginous pubescence; first

abdominal segment long, about two-thirds the length of the hind

femora; first tergite strongly punctate, the punctures moderately

large, close but distinct medially, becoming closer and confluent

laterally; second tergite glabrous, with small, very sparse punc-

tures; remaining tergites weakly punctate, the punctures small

and shallow; pygidial area not margined laterally, glabrous, very

weakly aciculate, the tergite with a thick fringe of pale, short

hairs at its posterior margin; median, longitudinal carina of first

sternite crenulate; second sternite with moderate, indistinct, sepa-

rated punctures and with short, vestigial felt lines laterally;

remaining sternites with small, weak punctures; wings subfuscous

on the distal half; length of cell 2nd R^ + Rg on the costal mar-

gin equal to the length of the stigma; cell Rg receiving vein

one-third the distance from base to apex; cell R^ obsolete; vein

Mg obsolete; vein m-cu anterior to vein M^+Cu^^ on vein CUj;

calcaria ferruginous. Length, 13 mm.

Female. Entirely ferruginous, the legs concolorous with the

body; head clothed with sparse, pale, recumbent and erect pubes-

cence, except the vertex posteriorly with sparse, golden ferrugi-

nous pubescence; thorax clothed with sparse, long, pale pubescence,

except the dorsum with sparse, golden ferruginous pubescence;

abdomen clothed with sparse, pale pubescence, except the second

tergite excluding narrow lateral areas, with sparse, golden fer-

ruginous pubescence, and all the segments above and beneath,

excepting the first sternite, with thick, posterior, marginal fringes

of pale, plumose hairs; head distinctly narrower than the thorax,

rounded posteriorly; mandibles slender, edentate at the tip and

180

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 4

with a small tooth within, strongly excised beneath near the base

forming a blunt tooth subtending the excision; antennal tubercles

distinctly, but not widely, separated; first segment of flagellum

slightly shorter than the second and third united, the second dis-

tinctly shorter than the third; antennal scrobes distinctly cari-

nate above; front, vertex and genae with moderate, very close

punctures, the puncturation more or less obscured by the pubes-

cence; distance between posterior margin of eyes and postero-

lateral angles equal to somewhat less than half the greatest

diameter of the eyes; thorax as long as broad, slightly narrowed

at thei propodeal spiracles and behind; humeral angles not promi-

nent; dorsum of thorax with very dense, confluent, moderate punc-

tures, becoming subscabrose on the dorsum of propodeum; pos-

terior face of propodeum with moderate, distinct punctures on

the disk; scutellar scale absent; propleurae glabrous, impunctate,

except the dorso-ventral ridge broad, densely punctate, with very

long, erect, pale hairs; metapleurae glabrous, except punctate ven-

trally; sides of propodeum with moderate, shallow, indistinct

punctures; first abdominal segment very small, short, distinctly

constricted from the second; first tergite densely punctate; sec-

ond tergite with moderate punctures, dense and confluent on the

anterior fourth, close on the lateral fourths, separated and shallow

on remainder of tergite; tergites three to five with small, distinct

punctures; pygidial area very large, covering nearly all of last

tergite, distinctly margined laterally, distinctly strongly granu-

late throughout, with an obscure appearance of 'longitudinal

striations in certain lights; first sternite elevated along the longi-

tudinal median line, but not distinctly carinate; second sternite

with a low, median, longitudinal ridge on the anterior third, with

moderate, distinct, close punctures; stemites three to five with

small, distinct, close punctures ; legs clothed with long, pale hairs ;

calcaria ferruginous. Length, 7 mm.

Holotype. Male, Cat. No. 52781 United States National

Museum, Coll. No. 36-7, Eagle Lake, Lassen County, Cali-

fornia, July 30, 1936 (K. A. Salman), {in copula with allo-

type). Allotype: female. Coll. No. 36-7, Eagle Lake, Lassen

County, California, July 30, 1936 (K. A. Salman). Paratypes;

five males, five females [in copula). Coll. No. 36-7, Eagle Lake,

Lassen County, California, July 30, 1936 (K. A. Salman) ;

seventeen males, forty-nine females. Coll. No. 36-8, Eagle Lake,

Lassen County, California, July 31, 1936 (K. A. Salman), in

collections of United States National Museum, University of

Minnesota and K. A. Salman.

OCT. 1938]

MICKEL— PHOTOPSIDS

181

Dr. Salman’s notes, made at the time the specimens were

collected, are as follows:

“Coll. No. 36-7; Eagle Lake, Lassen National Forest, Lassen

County, California, July 30, 1936. Sandy beach on north shore

of lake. Strong wind blowing from southwest. Time of collec-

tion from just before sunset to dusk — 6 to 8 p. m. Many females

crawling over sand, occasionally digging into loose sand. Seemed

to prefer margins of patches of low grass or small open sandy

spots. Few found actually within the larger patches of grass.

Males on ground and in flight in large numbers. They fly low

over ground and approach towards females from windward, sev-

eral usually flying into the wind in the vicinity of each female.

One usually comes on female and copulates, the act taking only

a few seconds. The other males remain around but I observed

no second copulation by another male and the same female. Six

pairs taken in the act of copulation. The attachment of the pair

is quickly broken when they are disturbed. Coll. No. 36-8; Eagle

Lake, Lassen National Forest, Lassen County, California, July

31, 1936. Same species as in Coll. No. 36-7 in flight and crawling

on ground. Much less abundant than on previous evening although

time about the same. August 1, 1936, 1 to 3 p. m. Bongberg and

Eaton noted neither males nor females in evidence at this time

of day although Dasymutilla pacifica var. aureola present on hot

sand. August 4, 1936. No flight occurred on this date late in

the afternoon although conditions about the same as on July 30

and 31. Apparently period of flight is short.”

The male is closely related to pedatus Baker described from

southern California, but differs as follows: clypeal tubercle (a

small, blunt, median tubercle on the posterior margin of clypeus

in pedatus) absent, legs ferruginous, almost concolorous with

the body (in pedatus, legs yellow, much paler than the body),

distal half of wings subfuscous (in pedatus, tinged with yellow,

subhyaline), and mandibles distinctly broader distally than at

narrowest point of emargination (in pedatus, not noticeably

broader distally than at narrowest point of emargination). The

felt lines on the second sternite of many of the male paratypes

are so vestigial that they appear to be absent. The Baker types

of Photopsis have been available for study and comparison with

the type material of salmani; the following couplets may be

used to separate pedatus Baker, ingenuus Baker (very closely

related to pedatus) and salmani:

1. Posterior margin of clypeus with a median, blunt tubercle; legs

yellow, paler than the body; wings subhyaline 2

182

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV, NO. 4

Posterior margin of , clypeus not elevated medially, not tuber-

culate; legs ferruginous, concolorous with the body; wings

subfuscous salmani n. sp,

2. Clypeal tubercle small, obscure; ventral area of mesopleurae

shallowly, indistinctly punctate ingenuus Baker

Clypeal tubercle moderate, distinct; ventral area of meso-

pleurse distinctly reticulate pedatus Baker

The female is related to pygmaea. No specimens of the latter

species are available for comparison at the present time and the

description of pygmaea is not very helpful in indicating dif-

ferences between the two. Pygmaea is said to have white, erect

pubescence on the dorsum of the thorax and abdomen, while

salmani is conspicuously golden ferruginous pubescent on the

posterior part of vertex, and on the thorax and abdomen above.

The type of pygmaea is in the collections of the American Ento-

mological Society and bears a locality label, “Boulder, Colo-

rado.”

Odontophotopsis atripes Mickel, n. sp.

Male. Ferruginous, except the femora, tibiae and tarsi very

dark, almost black, and the flagellum blackish; clothed through-

out with sparse, erect, pale hairs, the hairs on the front, vertex,

pronotum, mesonotum, scutellum, and abdominal tergites tinged

with golden ferruginous; second abdominal tergite with a dis-

tinct, posterior marginal fringe of pale, plumose hairs, the remain-

ing tergites without fringes; head slightly narrower than the

thorax; mandibles with a distinct dorsal carina extending their

entire length, edentate at the tip and apparently with two small

teeth near the tip, distinctly excised beneath, a distinct, blunt

tooth subtending the emargination; clypeus slightly concave, dis-

tinctly depressed below the dorsal margin of the mandibles, the

posterior margin not tuberculate medially; antennal tubercles

distinctly, but not widely, separated; scape moderately punctate,

with a single, longitudinal carina anteriorly; first segment of

flagellum about four-fifths the length of the second; antennal

scrobes not carinate above, but with a small, distinct tubercle

nearer to the antennal tubercles than to the eyes; front with a

small pit in front of the median ocellus and a shallow sulcus

extending forward from it to between the antennal tubercles;

front, vertex and genae with small, very sparse punctures; ocelli

moderate in size, the distance between the lateral ocelli and the

eyes equal to twice the greatest diameter of a lateral ocellus;

lateral areas of pronotum with moderate, close punctures, the

median area almost impunctate; parapsidal furrows complete

OCT. 1938]

MICKEL— PHOTOPSIDS

183

from anterior to posterior margins of mesonotum; mesonotum

with moderately small, sparse punctures; scutellum with mod-

erate, very close, almost dense punctures; enclosed area on dorsum

of propodeum composed of a pair of long, narrow areas, each about

five times as long as broad, and flanked on each side by a broader

area slightly more than half as long and broader anteriorly than

posteriorly; remainder of dorsum and posterior face of pro-

podeum distinctly reticulate; propleurae finely, shallowly punctate;

ventral area of mesopleurae reticulate, except posteriorly glabrous;

dorsal area of mesopleurae finely punctate anteriorly, with mod-

erate, shallow punctures posteriorly; metapleurae glabrous, except

ventrally punctate; sides of propodeum weakly punctate; meso-

sternum with a pair of small, acute teeth at the midline, the

teeth slightly recurved posteriorly; tegulae small, convex, glabrous,

except that the anterior and inner margins are punctate and

ferruginous pubescent; first abdominal segment slender, petiolate,

the first tergite with strong, moderate, close punctures; second

tergite glabrous, with small, very sparse punctures throughout;

remaining tergites with fine, shallow, indistinct punctures; last

tergite obscurely granulate, without a well defined pygidial area;

first sternite with a weak, longitudinal ridge, the latter slightly

elevated anteriorly into a small tooth; second sternite with mod-

erate, separated punctures; felt line present on second sternite

and more than half the length of the felt line on the second ter-

gite; remaining sternites finely punctate; wings slightly infus-

cated; veins dark brown; cell 2nd R^ + Rg acute at the tip, the

length on the costal margin equal to the length of the stigma;

cell R+lst R^ long and narrow, its length equal to the length

of cell 2nd R^ + Rg; cell Rg receiving vein before the

middle; cell R^ and vein Mg entirely obsolete; legs clothed with

sparse, pale hairs; calcaria pale yellowish. Length, 7 mm.

Holotype. Male, Cat. No. 52783 United States National

Museum, Eagle Lake, Lassen County, California, July 31, 1936

(K. A. Salman) .

Near to fallax Viereck and ocellatus Baker, both having the

felt line on the second sternite more than half the length of the

felt line on the second tergite, but differs from both in the almost

black legs and dark fuscous flagellum.

Photopsis minutella Mickel, n. sp.

Female. Entirely ferruginous, except the femora and tibiae

blackish, and the flagellum pale ferruginous, paler than the head;

front and vertex clothed with sparse, long, erect and recumbent,

dark fuscous, almost black hairs; genae and remainder of head

184

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 4

with pale pubescence;' dorsum of thorax clothed with sparse,

erect and recumbent, black hairs; remainder of pubescence of

thorax pale; second abdominal tergite clothed with sparse, long,

erect and recumbent, black hairs; tergites III to V with sparse,

erect, black hairs; tergites II, III, IV and V and sternites II,

III, IV and V, each with a thick fringe of pale, plumose hairs;

remainder of abdominal pubescence above and beneath pale; head

approximately the width of the thorax; mandibles slender, eden-

tate at the tip, distinctly excised beneath near the base; antennal

tubercles distinctly, but not widely, separated; first segment of

flagellum scarcely longer than the pedicel, about equal in length

to the second, and slightly shorter than the third; antennal scrobes

not carinate above; front, vertex and gense with moderate, close,

indistinct punctures; thorax subrectangular, slightly narrowed

anteriorly and posteriorly; humeral angles angulate, but not

prominent; dorsum of thorax with moderate, dense punctures,

becoming recticulate on the dorsum and posterior face of pro-

podeum; propleurae finely, indistinctly punctate; mesopleurae

glabrous, except the dorso-ventral ridge closely punctate and with

long, erect, pale hairs; metapleurae entirely glabrous; sides of

propodeum glabrous, with a few, scattered, indistinct punctures,

and a few, erect, pale hairs; scutellar scale entirely absent; first

abdominal segment entirely sessile with the second; first tergite

with small, close punctures; second tergite with moderately small,

separated punctures; tergites III to V with fine, indistinct punc-

tures; pygidial area distinct, margined laterally, weakly granu-

late and with weak, longitudinal striations visible in certain lights ;

first sternite with a median, longitudinal carina; second with small,

close, indistinct punctures; remaining sternites finely, indistinctly

punctate; legs clothed with pale pubescence; calcaria ferruginous.

Length, 4 mm.

Holotype. Female, Cat. No. 52782 United States National

Museum, Eagle Lake, Lassen County, California, July 31, 1936

(K. A. Salman). Paratypes. Two females. Eagle Lake, Lassen

County, California, July 31, 1936 (K. A. Salman), in the eol-

leictions of University of Minnesota and K. A. Salman.

Related to capricornis Rohwer, but differs in having the abdo-

men ferruginous, the flagellum pale ferruginous and in having

thick fringes of plumose pubescence at the posterior margin of

segments II, III, IV and V, both above and beneath. This is

probably the female of atripes.

References

Baker, C. F., 1905. New Western Mutillidae, I, II. Invertebrata

Pacifica, vol. 1, pp. 93-99, 111-116.

OCT. 1938]

MICKEL— PHOTOPSIDS

185

Blake, Charles A., 1879. Catalogue of the Mutillidse of North

America, with descriptions of new species. Trans. Am. Ent.

Soc., vol. 7, pp. 243-254.

Rohwer, S. A., 1909. New Hymenoptera from Western United

States. Trans. Am. Ent. Soc., vol. 35, pp. 130-134.

Viereck, H. L., 1904. The Species of Odontophotopsis. Trans.

Am. Ent. Soc., vol. 30, pp. 81-92.

THREE NEW SPECIES OF TEXANANUS

BY DWIGHT M. DeLONG

Ohio state University, Columbus

Texananus bialtus DeLong, n. sp.

Resembling latipex in form and general appearance but more

distinctly colored and dorsal portion of the oedeagus tapered and

sharply pointed at apex. Length, 6.5 mm.

Vertex bluntly angled, one and one-half times as wide between

eyes at base as median length.

Color: Vertex yellow with a brownish broken transverse band

between the eyes. Scutellum with anterior portion rather heavily

marked with brown. Elytra creamy-white, rather sparsely marked

with dark brown ramose lines, the two posterior pale commissural

spots distinct.

Genitalia: Male valve rather short and rounded, plates short

with blunt tips. Styles long and narrow. Apices rounded, pointed

on inner margin. In lateral view the ventral portion of the oedaegus

is broader than in latipex, and the dorsal portion is gradually

tapered to a pointed apex which is directed upward and anteriorly.

Holotype male, Davis Mountains, Texas, August 22, 1936,

collected by J. N. Knull, in the author’s collection.

Texananus pergrada DeLong, n. sp.

Resembling ovatus in form and general appearance but with

ventral process of cedeagus very slender and unbranched. Length,

4.5-5.5 mm.

Vertex bluntly angled, about one and one-half times as wide

between eyes at base as the length at middle.

Color variable; in well marked specimens with a brown spot

186

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 4

either side of apex and a broken brown band between the eyes

on disk. Scutellum with four brown spots on anterior margin,

elytra with dark ramose pigment lines and with the three pale

commissural spots distinct.

Genitalia: Female last ventral segment rather strongly and

bluntly excavated, a brown-margined V-shaped notch at apex of

excavation. Male valve triangular; plates broad, short, together

appearing semi-circular; styles elongated, tapering at apex,

bluntly angled. Apices pointed inwardly. CEdeagus in lateral

view with a very slender, delicate ventral process and a broader

sickle shaped process the apex of which is more narrowed and

rounded at the tip.

Holotype male, allotype female, and male and female para-

types from Jemez Springs, New Mexico, June and September,

1919, and paratypes from Uvalde, Texas (Knull), and Mon-

terey, Mexico, in author’s collection. Paratypes male and female

from Modena, Utah; Desert, Utah; and Cedar City, Utah, in

Herbert Osborn collection.

Texananus dolus De Long, n. sp.

Resembling decorus in form and coloration but with longer

male plates and broader aedeagus. Length 6.5 mm.

Vertex broadly rounded, twice as broad between eyes as median

length, produced about half its length before anterior margin

of eyes.

Color: White, a brownish mark either side of apex and a

broad, broken band back of ocelli, between the eyes. Scutellum

with the two round spots on anterior half. Elytra marked as in

decorus with the pale margin and spots along commissural line.

Genitalia: Female, last ventral segment short, almost trun-

cate, posterior margin with a V-shaped notch about two-thirds

the distance to base; a small notch either side of median notch

at base is rounded to posterior margin. Male plates triangular

with slightly divergent, bluntly rounded apices ; oedeagus in lateral

view with a rather broad ventral portion which is pointed at the

apex, the dorsal margin sloping to ventral margin; dorsal por-

tion twice curved, the apical portion sickle-shaped and curved

dorsally and anteriorly.

Holotype male and allotype female, Logan Canyon, Utah,

July 24, 1930 (DeLong).

OCT. 1938]

NOTES

187

Note: Most interesting of the field trips of our Society

members is that of Dr. E. C. Van Dyke who went north to

Washington, then east to the Tetons and north again through

Canada to Banff and back home by the coast. He took a great

amount of material that will be placed in the Van Dyke Collec-

tion at the California Academy of Sciences. Also of much in-

terest was a three months’ trip by Mr. A. E. Michelbacher and

E. S. Ross through Lower California to Cape San Lucas and

back, by auto, bringing home a considerable collection of in-

sects, a portion of which will come to the Academy of Sciences.

Calendra (Sphenophorus) minimus Hart in California

Recently Mr. R. W. Burgess has discovered a colony of the

above-named beetle living about the roots of the Bermuda grass

lawns on the campus of the University of California at Berkeley.

This is, I believe, the first record west of the Rocky Mountains.

Two other species of Calendra, both native to California, how-

ever, have also been found on our university lawns: reticula-

ticollis Boh. for many years, and seqiioi(E V. D. quite recently

by Mr. J. J. du Bois. Other species found from time to time

in the lawns of the San Francisco Bay region are simplex Lee.

and gentilis Lee., common species of reedy marshes. — Edwin C.

Van Dyke.

Dates of Mailing

The numbers of Vol. XIV of the Pan-Pacific Entomologist were

mailed as follows: No. 1, on March 12, 1938; No. 2 on June 13,

1938; No. 3, on August 19, 1938; No. 4, on November 15, 1938.

188

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 4

A NEW SPECIES OF THE GENUS EANUS (COLEOPTERA

ELATERIDyE)

BY M. C. LANE*

Bureau of Entomology and Plant Quarantine

Eanus hatchi Lane, new species

Male. Length 7. 0-9.3 mm., width 2.3-3 mm. Form moderately

elongate, somewhat convex; distinctly shiny dark metallic with

green to purple reflections, except antennae and tibiae which are

brownish piceous, and the tarsi which are light brown. Vestiture

above very short and inconspicuous, beneath short and fine though

more evident and gray in color.

Head quadrate; frons transversely convex between antennae,

flattened between eyes, with a more or less distinct, broad, median,

triangular impression, and smaller round impression on each side;

moderately sparsely and coarsely punctate; antennae extending

about three segments beyond posterior angles of pronotum; seg-

ments II and III small. III slightly longer but similar to II, the

two together nearly as long as IV which is elongate triangular,

VI nearly two-thirds longer than broad, IV to X slightly serrate.

Pronotum one-tenth wider than long, about as wide just in

front of middle as across the base; sides broadly arcuate, sinuate

in front of posterior angles which are divergent, acutely pro-

duced, and obsoletely carinate; disc moderately convex, depressed

to side margins which are somewhat explanate; median line very

slightly impressed in basal portion, with a small round depression

on each side just in front of the middle, about equidistant from

middle and side margins; surface moderately sparsely and coarsely

punctate to margins, punctures separated by considerably more

than their own diameter. Scutellum slightly convex, slightly more

finely and densely punctate than the pronotum, posteriorly some-

what depressed and margined.

Elytra at humeri one-eighth wider than pronotum, nearly two

and one-half times as long as wide, widest a little behind middle,

the sides straight and slightly divergent to apical third, evenly

arcuate to the apices, which are bluntly rounded; each elytron

with nine distinct, moderately deep, punctulate striae, the lateral

margin slightly explanate, more so toward the apex, the intervals

slightly convex, and finely rugosely punctuate. Propleura and

prosternum evenly but somewhat more finely and densely punctate

than pronotum, becoming somewhat more deeply and densely

punctate on the prosternal mucro between the coxae. Metasternum,

abdomen, posterior coxal plates and femora very finely and

sparsely punctate. .^Edeagus as figured.

*United States Department of Agriculture.

OCT. 1938]

LANE— A NEW EANUS

189

Female. Length 8.4 mm., width 3.2 mm. Differs from male in

being slightly more robust and broader in proportion to length.

Antennae barely reaching to posterior angles of pronotum; seg-

ments II and III together longer than IV ; VI only one-fifth longer

than broad; pronotum broader with posterior angles slightly less

acute.

Type locality. Snohomish County, Wash. (Chase Lake). Other

localities, King County, Wash. (Lake Marie), and Seattle, Wash.

Type, allotype, and paratypes. Cat. No. 52793, U. S. Na-

tional Museum. Paratypes in collections of M. C. Lane, M. H.

Hatch, H. P. Lanchester, California Academy of Science, and

Canadian National Collection, Ottawa.

Described from 82 male and two female specimens. Type,

allotype, and 74 paratypes taken at the type locality on April

27, 1931; April 26, 1933; April 29, 1935; April 1936, April

29, 1937; and April 28, 1938, by M. H. Hatch; seven paratypes

collected at Lake Marie, King County, Wash., May 14, 1936, by

Hatch, Lane, and Lanchester; one paratype from Seattle, Wash.,

no date (C. V. Piper).

The paratypes vary in size and color, some being quite green-

ish coppery, others uniformly purple. The impressions on the

front of the head vary greatly, sometimes being barely evident,

and at the other extreme being in the form of a distinct W. The

lateral impression on the pronotum; is absent in only a few speci-

mens. The elytral striae vary somewhat, but they are always dis-

tinct, with the intervals slightly convex in most specimens.

This species has been collected only by sweeping the very low

vegetation of pure sphagnum bogs surrounding small lakes at

low altitudes in the Puget Sound area. The collector actually

has to walk out on the floating sphagnum mat to sweep it. A

few larv^ collected from the sphagnum moss itself are believed

to belong to this species.

This is the second representative of its genus from the Pacific

Northwest with bright metallic color and striate elytra. The first

was striatipermis, described by W. J. Brown of the Canadian

National Museum at Ottawa (Can. Ent., Vol. LXVHI, p. 248,

1936) from two specimens, Mara Mt., B. C., 6,000 feet, June 26,

1929, (Edwards), and Mt. Hood, Oregon, July, 1927 (Darling-

ton). The present author collected a male of striatipennis from

Mt. Rainier, Wash., July 19, 1936 (Reflection Lake, 4,900 feet),

which compares very well with the type; also, there was received

190

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 4

recently from D. M. Fender for determination a series of eight

males from Mt. Hood, Oregon, May 7, 1937 (Government Camp,

4,100 feet). These nine males fit Brown’s description fairly well,

but vary in color from specimens with the head and pronotum

dark cupreous and the elytra green, to others that are entirely

cupreous or even dark purple. They vary in size from 8.5 to

10.5 mm. and the scutellum is not always evidently sulcate. They

were all collected on short grass in mountain meadows at more

than 4,000 feet altitude. Hatchi differs from striatipennis in a

number of particulars, being smaller, more elongate and more

shiny, with the impressions of the head more distinct; antennal

segments II and III combined never longer than IV in male;

intermediate segments considerably longer than wide and not

so serrate; pronotum smaller and more quadrate in shape, the

punctation finer and sparser with the carina of the posterior

angles obsolete; elytra wider than the pronotum and more than

twice as long as wide, with the striae deeper, the intervals convex

and less rugosely punctate; beneath more evenly, finely, and

sparsely punctate. ^Tideagus of male shorter and stouter, with

lateral lobes sinuate on both margins and arcuate on outer angle

of tips.

STR/AT/PENN/S

Male ^deagus of Two Species of Eanus.

The author also has a male specimen of what is probably

striatipennis from Douglas, Alaska, July 25, 1901, but the color

OCT. 1938]

LANE— A NEW EANUS

191

is less brilliant and the elytral striae are shallowly impressed

though evident. It shows a relationship with decor atus (Mann.)

The aedeagus is the same as in striatipennis. These brilliantly

colored species bear a superficial resemblance to Ludius weidti

Angell, and striatipennis at least might be collected in the same

situations, but they are easily differentiated by the characters

given by Brown (Can. Ent., Vol. LXII, p. 161, July, 1930) for

separating Eanus from Ludius.

It is a pleasure to name this species for Dr. Melville H.

Hatch of the University of Washington at Seattle, whose gen-

erosity and encouragement have been very helpful and much

appreciated.

Notice to Members

At the annual meeting on September 24, 1938, it was decided

that membership in the Pacific Coast Entomological Society

will include subscription to its journal, the Pan-Pacific Ento-

mologist. Hence, beginning with Volume XV for 1939, mem-

bers will be billed for the Journal and their dues jointly ($3.00) .

This will effect a considerable economy in secretarial expenses

and will save members the bother of separate payments. — E. G.

Linsley, Secretary.

PROCEEDINGS OF THE PACIFIC COAST

ENTOMOLOGICAL SOCIETY

One Hundred and Forty-fourth Meeting, April 27, 1936

Annual field meeting, held at the lower end of Lake Pilarcitos,

San Mateo County, California. This property is part of the water-

shed of the San Francisco Water Company, permission to enter

it having been obtained through the efforts of Mr. J. B. Stein-

weden. County Entomologist of San Francisco. The affair was

rather exclusive, with a small attendance, but the day was pleas-

ant, the country attractive, and the collecting fair. Mr. Stein-

weden obtained several new species of thrips and Dr. Van Dyke

a new weevil, besides numerous other interesting captures. — E. C.

Van Dyke, Secretary pro tern.

One Hundred and Forty-fifth Meeting, September 12, 1936

Meeting held in the entomological laboratories of the California

Academy of Sciences, San Francisco, California. Members pres-

192

THE PAN-PACIFIC ENTOMOLOGIST [yoL, XIV. NO. 4

ent: C. D. Duncan, E. G. Linsley, E. C. Van Dyke, R. L. Usinger,

M. A. Cazier, E. P. Van Duzee, Wm. Upholt, Edgar Smith, Arthur

Smith G. F. Ferris, A. R. Mead, J. C. von Bloeker, E. R. Leach,

A. T. McClay, H. E. Burke, Elwyn Daybell. Visitors present:

James Elsea, B. E. White, S. Dorman, J. C. Clark, C. D. Michener,

H. Rustad, M. A. Embury, P. W. Pedrotti, B. B. Kessel, R. E.

Heckley, M. F. Blair.

After the transaction of business, the membership committee

recommended the following for membership: Dr. and Mrs. E. L.

Kessel, Mr. M. A. Embury, Mr. Charles D. Michener, Mr. B. E.

White, Mr. James Elsea, Mr. John C. Clark, and Mr. P. W.

Pedrotti. They were unanimously elected.

Upon the recommendation of the Nominating Committee, Mr.

Van Duzee, chairman, the following were elected as officers for

the coming year: Dr. C. D. Duncan, President; Mr. R. L. Usinger,

vice-president, and Mr. E. G. Linsley, secretary-treasurer.

Dr. Van Dyke read a letter from Prof. Essig, written from

the British Museum of Natural History. Prof. Essig described

the fine spirit of co-operation exhibited by the curators there and

also discussed collecting and field work. He stated that he had

had the privilege of copying the diary of Lord Walsingham, which

recorded his famous trip to the west coast of North America.

Dr. Van Dyke also reported the death of Dr. Killeen, a charter

member of the Society and one who had long maintained an in-

terest in the organization. It was unanimously voted that proper

notice of h,is passing should be published in the Pan-Pacific

Entomologist.

Upon the suggestion of Dr. Burke, it was decided that the date

for the annual fall meeting be changed to the Saturday nearest

to the 20th, in order to avoid conflict with holidays.

Prof. Ferris announced that he was preparing an atlas of scale

insects, which it was hoped might ultimately contain illustrations

of all of the species.

Dr. Duncan presented the paper of the afternoon, upon mouth-

part adaptations of Vespula as correlated with feeding habits.

He pointed out the difference in feeding habits between the larvae

and adults and discussed the resultant morphological differences.

Dr. Duncan’s paper was beautifully illustrated with drawings of

the anatomical and morphological details of the mouthparts, em-

phazing in particular the musculature and functions of the com-

ponent parts.

After a general discussion of Dr. Duncan’s paper, the meeting

was adjourned. — E. G. Linsley.

OCT. 1938]

INDEX TO VOLUME XIV

193

Aleutian Isds. Coleoptera of, 145.

Allygianus gutturosus Ball, 153.

merus, Bmr., 153.

varius Bmr., 154.

Amphizoa striata E. C. V., 112.

Amphorophora nervata (Gill.),

91.

Anabolia oslari Ling, 67.

Andrena dinognatha Tmblk., 26.

pensilis Tmblk., 27.

suavis Tmblk., 24.

Aphis gossypii Glover, 91.

Arctocorixa beameri Hungf., 76.

Arctopsyche brevipennis Ling,

64.

californica Ling, 65.

oregonensis Ling, 65.

Astenophylax needhami Ling,

66 .

Atheas mirabilis Drake, 70.

Bailey, S. F., note by, 18.

Bembex nicolai Ckll., 150.

Blattarise of Washington, 120.

Bombus brimeri Swnk., 29.

e. fuscifrons Swnk., 30.

Bonnell & Brugas, note by, 112.

Caddis flies, 59.

California fire ant, 87.

Calendra minimus Hart, 187

Carabus forreri Bates, 95.

Cerambycidae, Longevity in, 177.

Syn. of N. Am. species, 105.

Chelostoma, key to, 37.

bernardinum Mchn., 41, 43.

californicum Cress., 37.

m. cockerelli Mchn., 43.

m. incisulum Mchn., 44.

m. marginatum Mchn., 44.

phaceliae Mchn., 38.

Chilostigma atlinensis Ling, 68.

Chimarrha idahoensis Ling, 64.

Chrysobothris arizonica Chmbl.,

13.

bisinuata Chmbl., 13.

calcarata Chmbl., 12.

grandis Chmbl., 14.

planomarginatus Chmbl., 10.

scotti Chmbl., 11.

Clistoronia bifida Ling, 68.

Coelambus curvipes Leech, 84.

Key to 3 species, 86.

Coleoptera of Aleutian Isds.,

145.

Colpotaulius tehamia Ling, 67.

Creophilus maxillosus L., 148.

Cysteodemus armatus, 124.

Dalmannia of N. Am., key, 135.

blaisdelli Cress, 133.

heterotricha Bohart, 134.

hirsuta M. C. V., 134.

nigriceps Loew., 132.

pacifica Banks, 134.

picta Wlstn., 133.

vitiosa Coq., 133.

Derotropis, 172.

astragali Mtchl., 174.

Dicerca hesperoborealis H. & B.,

151.

Dictydea, key to, 34.

falcata E. P. V., 35.

variegata E. P. V., 34.

Diplectrona oaklandensis Ling,

66 .

Dolophilus arizonensis Ling, 63.

cruzensis Ling, 64.

Donacia, key, 118.

g. flavipennis Mann., 117.

fulvipes Lac., 117.

idola Hatch, 110.

s. magistrigata Mead, 113.

d. occidentalis Mead, 114.

e. pacifica Schffr., 116.

Dyslobus remotus E. C. V., 3.

Eanus hatchi Lane, 188.

Euparagia, key, 137.

maculiceps (Cam.), 137.

platiniceps Bohart, 138.

scutellaris Cress., 138.

Gerridse of Mexico, 73.

Gerrids, striding of, 157.

Gerris ampla D. & H., 73.

firma D. & H., 73.

Glossosoma cregonense Ling, 62.

Graptocorixa emburyi Hungf.,

76.

Graves, H. W., note by, 91.

Gyponinse, Neotropical, notice,

128.

Haplothrips californicus, 18, 19.

Hatch, M. H., note by, 120.

Hesperophylax minutus Ling, 67.

Hinds, W. E,. Necrology, 96.

Hodophylax, aridus James, 129.

basingeri Ptchd., 130.

Hoplandrothrips sycamorensis.

Mason, 20.

Hydrometra risbeci Hungf., 81.

Hydropsychodes arizonensis

Ling, 66.

Idosaulus Zmrn., 158.

abditus Zmrn., 159.

Jaques, H. E., book by, 9.

Leech, H. B., note by, 69, 84.

Leptopharsa hintoni Drake, 71.

usingeri Drake, 72.

Linsley, E. G., note by, 97, 177.

Listrus regalis Blsd., 165.

Lycsena m. penroseae Field, 142.

194

THE PAN-PACIFIC ENTOMOLOGIST [yOL. XIV. NO. 4

Lygaeidse, nymphal scent glands,

83.

Megachile, notes on, 168.

couleeana, Mtchl., 171.

Melanotus longulus Lee., 16.

Metrobates porcus Andsn., 75.

Monocrepidius exsul Sharp, 91.

Mutillids, 178.

Myzus ornatus Laing, 92.

Nemocestes expansus E. C. V., 4.

Neophylax pulchellus Ling., 68.

Notonecta penecompacta Hungf.,

78.

penelobata Hungf., 77.

Odontophotopsis atripes Mckl.,

182.

Oligoplectrum arizonicum Ling,

69.

californicum Ling, 69.

Orsillini from China, 140.

Pacific Coast Ent. Soc., Proc.,

46.

Panscopus michelbacheri Ting,

121 .

Paracimbt>cera E. C. V., 1.

atra E. C. V., 2.

Philopotamus novusamericanus,

Ling, 63.

oregonensis Ling, 63.

Photopsis minutella Mckl., 183.

salmani Mckl., 178.

Phymatodes lecontei Linsl, n. n.,

109.

Plectrura spinicauda Mann., 69.

Pleocoma, 49, 97.

bibliography and synonymy,

100 .

distribution, 97.

blaisdelli Linsl., 55.

carinata Linsl., 56.

crinita Linsl., 53.

d. leachi Linsl., 52.

minor Linsl., 52.

trifoliata Linsl., 57.

h. vandykei Linsl., 56.

Polyphylla barbata Czr., 161.

Pratt, R. Y., notes by, 157, 167.

Prionus, Synonymical notes, 105.

Proranus ghilianii Spinola, 128.

Prothetely in wireworms, 16.

Rhagovelia mira D. & H., 152.

Rhyacophila betteni Ling, 59.

callfornica Ling, 60.

complicata Ling, 60.

doddsi Ling, 61.

novarotunda Ling, 61.

oregonensis Ling, 61.

Sampson, W. W., note by, 91.

Scaphinotus, coll’n of, 167.

Scoliopelta grandis James, 156.

Sinorsillus Usngr., 140.

piliferus Usngr., 140.

Sitona cockerelli Blsd., 31.

Solenopsis x. maniosa Whir., 87.

Texananus bialtus De L., 186.

dolus De L., 187.

pergrada De L., 186.

Thysanocorynus E. C. V., 5.

aridus E. C. V., 6.

Tingitidse of Mexico, 70.

Trepobates becki D. & H., 75.

Trichalophus seminudus E. C.

V., 7.

Triglyphulus nevadensis E. C.

V., 8.

TVpes in Oal. Acad. Sci., 104.

iJsinger, R. L., note by, 9.

Van Duzee, E. P., note by, 128.

Van Dyke, E. C., note by, 95.

Water Bugs from Mexico, 76.

Wilson, G. R., obituary, 143.

Xeromegachile, 168.

THE

Pan -Pacific Entomologist

VOLUME FOURTEEN

19 3 8

E. P. VAN DUZEE, Editor

E. C. VAN DYKE, Associate Editor

E. R. LEACH, Treasurer

R. L. USINGER, Business Manager

Published by the

Pacific Coast Entomological Society

in co-operation with

The California Academy of Sciences

San Francisco, California

1938

CONTENTS OF VOLUME XIV

Armitage, H. M.,

George Ringo Wilson 143

Bailey, Stanley F.,

A redescription of two species of California Thrips 19

Bells in memory of W. E. Hinds 96

Beamer, R. H.,

Two new species of Allygianus 153

Blaisdell, Frank E.,

A new species of Sitona from San Miguel Island 31

A new species of Listrus from Sequoia National Park.. 165

Bohart, George E.,

Synopsis of the genus Dalmannia in North America.... 132

Bohart, Richard M.,

A synopsis of the genus Euparagia 136

Cazier, Mont A.,

A new California Polyphylla, with notes on certain

characters within the genus 161

Chamberlin, W, J.,

Six new species of Chrysobothris from the Western

United States 10

Cockerell, T. D, A.,

A new bembecine wasp from San Nicolas Island, Cali-

ornia, 150

De Long, Dwight M.,

Three new species of Texananus 185

Drake, Carl J,,

Mexican Tingitidae 70

Drake, Carl J., and Harris, H. M.,

Concerning Mexican Gerridae 73

A new Rhagovelia from Cuba 152

Essig, E. 0.,

The ornate aphid, new to North America 92

Field, William D.,

A new race of Lycaena mariposa 142

Hatch, Melville H.,

A new species of Donacia from Washington 110

Report on the Coleoptera collected by Dr. V. B. Schef-

fer on the Aleutian Islands in 1937 145

Ill

Hatch, Melville H. and Beer, Frank M.,

A new species of Dicerca from Washington 151

Hungerford, H. B.,

Report upon some water bugs from Mexico, collected

by Mr, Embury 76

A new Hydrometra from New Caledonia 81

James, Maurice T.,

A second species of Scoliopelta 156

Lane, M. C.,

A new species of the genus Eanus 188

La Rivers, Ira,

Notes on Cysteodemus in Southern Nevada 124

Leech, Hugh B.,

A new species of Ccelambus from California 84

Ling, Shao-Win,,

A few new caddis flies in the collection of the Califor-

nia Academy of Sciences 59

Linsley, E. Gorton,

Notes on the habits, distribution and status of some

species of Pleocoma 49, 97

Synonymical notes on some North American Ceram-

byoddae , 105

Mallis, Arnold,

The California fire ant and its control 87

Mead, Albert R.,

New subspecies and notes on Donacia, with key to the

species of the Pacific States 113

Michener, Charles D.,

American bees of the genus Chelostoma 36

Mickel, Clarence E.,

Photopsid Mutillids collected by K, A. Salman at Eagle

Lake, California 178

Mitchell, Theodore B.,

Notes on the Megachilid subgenera Xeromegachile and

Derotropis 168

Pacific Coast Entomological Society, Proceedings 46, 191

Pritchard, A. E.,

The genus Hodophylax James, with a description of

basingeri, n. sp.

129

Stone, M. W.,

An occurrence of prothetely in Melanotus longulus Lee 16

Swenk, Myron H.,

Two New American Bumblebees 29

Timberlake, P. H.,

New species of Andrena from California 24

Ting, Peter C.,

A new species of Panscopus in the subgenus Nocheles.. 121

Usinger, Robert L.,

Dorsal abdominal scent glands in nymphs of Lygaeidae 83

A new genus and species of Orsillini from China 140

Van Duzee, Edward P.,

Genus Dictydea Uhler 33

Van Dyke, Edwin C.,

New species of Rhynchophora from Western North

America 1

Zimmerman, Elwood C.,

Idosaulus, a new genus of Fijian Cryptorhynchinae 158

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