List of Fascicles issued to 22nd June, 1929 (continued) :—

Part IV. CoLeopTera. a ari

Fasc. |. Carabide. By H. E. es 9 text-figures. Dytiscide. By A. Date Issued.

ermann. 2 ee Staphylinide. By M. Cameron, M.B. 2 text-

ficures. Hydrophil io. ymont. | text-figure Clavicornia and

Lamellicornia. By oe Ti: oe 13 text-figures. Pp. 1-66. 1927, 4to. 3s. 19h December, 1927.

Fasc. 2._ Heteromera, Bostrychoidea, eee ae Buprestide. By K.G.

Blair, BSc. 14 text-figures. pads. . van Fugie Sseaes 10

ee Mel fees Serta z). By ay one Cerambycide. By

uriviilius. late. es e2. By R. Kleine. 4 text-figures.

Anthribide. By Kar ordan, Ph.D. 11 text-figures. Proterhinide. By :

R. C. L. Perkins, DSe., F.R:S. be 67-174. ae se 5s. 25th February, 1928.

Fase. 3. Throscide. By K. G. Blair, B.Sc. neure. Chrysomelide.

By S. Maulik, M.A. 18 text-figures. Pp. 75218" "1629, 4to. 2s. 6d. 23rd February, 1929.

Puc 4: {Ply patidseend Selvidae | Be G ECB ase ee

Feares. Pp 17-248, 1929, Ato. Ds. 6d. eahp aig to 2nd Jie MDB)

Part V. HYMENOPTERA.

Fase. ‘1. pole Sphecoidea, and Vespoidea. By R. C. L. foe DSc

ERS Eyya! Chena, PS BS 12 ek ,

By pee x Wine 12 text-figures. Formicide. By ae Saute

9 text-figures. Pp. 1-58. 1928, 4to. 5s. 25th February, 1928.

Part VI. Diptera.

Fasc. 1. Streblid d Nycteribiid By L. Fal 7 text-figures. Hi

bostide: By'G: Rererae, cide, By Pp. 1-21. 1927, 4t0. 262. 23rd July, 1927.

Fasc. 2. Nematocera. By F.W.Edwards, MA. 20text-fisures. Cecid

RCHLP Bane BA. PAD. deatheucs’ Pps 1B 1928 de a” 23rd June, 1928.

Fasc. 3. Stratiomytide, Tabanide and Soe By Gertrude Ricardo. 6 text-

gures. Larve of eye Sees . A; Buxton, M.A. 2 text-figures

Delchopedie By C. G. Lamb, seb "8 text-figures. PR Ei By

Po vA Buon! MAS! 90. test hence’) a Maced JR. Malloch.

Pp. 109-175. "1929, 4to. 5s: llth May, 1929.

Part VII. Ortner Orpers oF INsEcts.

Fasc. 1. Isoptera: Family Wepre ae Gerald F. Hill. _ 14 text-figures and

i plate. Odonata. By Lt-Col. F , LMS., FES. 5 text-

Pp. 1-44. 1927, dto. 25. 6d. sie ext heures. 6th May, 192f a

Fase. 2. EO ee By R. J. tier. Sc.D. SO Pee “RS: and: |. A.

Be Re kard S Ree ERGE ELS, Costin Pp Be TOR

Jed at ae "3d June, 1928.

Fasc. 3. Mallophaga. By J. Waterston, DSc. 2 Soe ers By

<3 A. ae i =A a optera. ry. Fee cane is a ;

europtera y en-f etersen. text- fae pterygota. ‘

Bee Cecpente D See eo nat fe ee Pe. 1aDS, dto. 26d. 28th July, 1928,

Part VIII. ‘TrrrestriAL ARTHROPODA OTHER THAN INSECTS.

Fasc. 1. Isopoda Terrestria. By Harold G. Jackson, DSc. 2 plates. Scor-

pions: ea. y BAS Pes wae Sey eee aes a Kastner.

text- : text- es

dig POE GES Ce Bie er 23rd July, 1927.

Fasc. 2. Myriopoden (Mi da). By C. Att 4 text-figures. Araign

(Acsnedtay By Pig asia ee 79 text- baee Pp. 29-78 571929, 4to. 2 a 22nd June, 1929.

ee Oe

Keg. cL Enters

ink epee Mee Evormnate BS

Bs S “Refe 2 's Wnty :

iO, i AEN

BRITISH MUSEUM (NATURAL HISTORY) / “©¢% -7- ¥- 77 97_,

INSECTS OF SAMOA

AND OTHER SAMOAN TERRESTRIAL

ARTHROPODA

PART IV. COLEOPTERA

FASC. 5. Pp. 249-346

CURCULIONIDAE

By SIR GUY MARSHALL, C.M.G., D.Sc., F.R.S.

WITH THIRTY-ONE TEXT-FIGURES

= LONDON:

PRINTED BY ORDER OF THE TRUSTEES OF THE BRITISH MUSEUM

SOLD AT

THe British Musrux (Natvrat History), Cromwett Roap, S.W.7

AND BY

B. Quanrrce, Lrp.; Dotac & Co., Ltp.; anp Tue Oxrorp Untversrry PRsss.

1931

Issued 25th April, 1931.) [Price Five Shillings

INSECTS OF SAMOA

AND OTHER SAMOAN TERRESTRIAL

ARTHROPODA

Although a monograph, or series of papers, dealing comprehensively with

the land arthropod fauna of any group of islands in the South Pacific may be

expected to yield valuable results, in connection with distribution, modification

due to isolation, and other problems, no such work is at present in existence.

In order in some measure to remedy this deficiency, and in view of benefits

directly accruing to the National Collections, the Trustees of the British

Museum have undertaken the publication of this account of the Insects and other

Terrestrial Arthropoda collected in the Samoan Islands, in 1924-1925, by

Messrs. P. A. Buxton and G. H. E. Hopkins, during the Expedition of the

London School of Hygiene and Tropical Medicine to the South Pacific.

Advantage has been taken of the opportunity thus afforded, to make the studiés

as complete as possible by including in them all Samoan material of the groups

concerned in both the British Museum (Natural History) and (by courtesy of

the authorities of that institution) the Bishop Museum, Honolulu.

It is not intended that contributors to the text shall be confined to the

Museum Staff or to any one nation, but, so far as possible, the assistance of the

leading authorities on all groups to be dealt with has been obtained,

The work is divided into nine “Parts” (see p. 3 of wrapper), which are

subdivided into “Fascicles.” Each of the latter, which appear as ready in

any order, consists of one or more contributions. On the completion of the

systematic portion of the work it is intended ‘to issue (in Part IX), a general

survey, summarising the whole and drawing from it such conclusions as may

be warranted.

A list of Fascicles already issued will be found on pp. 3 and 4 of this wrapper.

| E: .E: AUSTEN:

Keeper of Entomology.

British Museum (Natura History),

CromMweELL Roap, S.W.7.

INSECTS OF SAMOA

Part IV. Faso. 5

CURCULIONIDAE

By Sir Guy Marswatt, C.M.G., D.Sc., F.R:S.

(With 31 Text-figures.)

THE importance of the collections of CuRCcULIONIDAE here dealt with is sufficiently

indicated by the fact that when a list of the species occurring in the Samoan

Islands was published ten years ago (Proc. Hawai. Ent. Soc., iv, pp. 585-600,

1921) only 22 species, belonging to 15 genera, were recorded ; whereas now these

- numbers have been increased to 86 species and 55 genera, of which 54 species

and 15 genera are here described for the first time. In addition, there are 8 species

represented by single specimens, either in poor condition or of uncertain generic

position, which have not been dealt with.

The following table will give an idea of the distribution of these insects so

far as it is known, the names of the new species and genera being printed in

heavier type.

Upouv. | Tururua.| Savat. FURTHER DISTRIBUTION.

BRACHYDERINAE

Ottinychus buxtoni, n. . 5 ; x

» hopkinsi, n. é ; x

OTIORRHYNCHINAE

Sphaerorrhinus puncticollis, Mshl. . x Manw’a.

Ms mutans, n. : . x

Elytrurus samoensis, Mshl. . : 2

i bicolor, Mshl. : : x x Xx

Trigonops spongicollis, Fairm. : Xx x x Tahiti.

ERIRRHININAE

Nodocnemus subfasciatus, n. . j x

Hesychobius nebulosus, nn. . 5 x

Iv. 5 249 1

250

INSECTS OF SAMOA.

APIONINAE

Cylas formicarius, F.

ANTHONOMINAE

Amblycnemus stevensoni, n. .

Rhynchaenus samoanus, n

TYCHIINAE

Nesendaeus setolineatus, 0

ACICNEMIDINAE

Acicnemis variegata, Fairni.

ee biconifera, Fairm. .

3. . eludens::n, 7:

ITHYPORINAE

Cranopoeus turritus, n :

Spanochelus planirostris, n. .

CRYPTORRHYNCHINAE

Anaballus amplicollis, Fairm.

Elytroteinus subtruncatus, Fairm.

Acalles samoanus, n.

Microcryptorrhynchus analis, n.

Os subscutellatus,n.

glomus, n.

Phanevoorcthus dilophus, n

Deretiosus scutiger, n.

2 gibber, n.

5 wilderi, n

Deretiodes swezeyi, n.

Teleodactylus roscidus, n

Chaetectetorus tutuilae, n.

Upouv.

XXX

xX XK KK HK XX x X

Rhadinomerus atomosparsus, Fairm.

Orochlesis nigrofasciata, Mshl.

Trigonopterus crinipes, 0

submetallicus, Mshl. .

Pst caesipes, n.

aeneoniveus, Fairm. .

55 bicolor, Mshl.

= serratipes,n. .

. bryani, n.

- samoanus, Heller

binotatus, Mshl.

Ampagia ceribrellicollis, Fairm.

An scmhisuturalies n

ZYGOPINAE

Mecopus trilineatus, Guér.

BARIDINAE

Eremonyx samoanus, n

3 rufoplagiatus, n

x xX XXX

x X

TurTuiLa.| SAVAII.

x xX X

FURTHER DISTRIBUTION.

Throughout the Tropics.

Fiji, Tahiti, Tonga, Wallis.

Fiji.

Fiji, Tahiti, New Caledonia.

Fiji, Honolulu.

Fiji.

New Ireland, Fiji,

New Hebrides.

Tonga,

BaRIDINAE—continued.

Omobaris lucens, un.

Nesobaris tutuilae, n.

ue parvungulis, n.

CALANDRINAE

Diathetes buxtoni, n.

= lyriger, n. :

Cosmopolites sordidus, Germ. .

Rhabdocnemis obscura, Boisd.

Polytus mellerborgi, Boh.

Calandra oryzae, L.

Diocalandra taitensis, Guér.

55 Srumenti, F.

CossoNINAE

Dryophthorus muscosus, 0.

ee armaticollis, n. .

Glyphostethus cancellatus, Mshl.

Pentarthrum cylindricum, Woll.

< hirticolle,n.

E naucum, n.

Dynatopechus rubronotatus, n.

Gitonischius tubicollis, n.

Stenotrupis myristicae, n.

Microtribus longiceps, n.

Phloeophagosoma carinirostre, n.

Pseudolus longulus, Boh.

Oxydema fusiforme, Woll.

Poesimplex;neg) |.

Aphanocorynes savaiiensis, 0.

Pa humeralis, n. .

Notiosomus cervicalis, n.

Cossonus platyrrhinus, n.

te dentipes, Mshl.

5 limbaticollis, Mshl.

- quaerens, n. .

Proéces praeustum, n. .

Mystrorrhinus dimorphus, n. .

Rhyncolosoma subsignatum, n.

Ochronanus pumilus, n. 2

Stereoderus binodifrons, Mshl.

Rhyncolus samoanus, Mshl.

is fuscicollis, n..

CURCULIONIDAE.

UPOLv.

x xX X

TUTUILA.

x xX XK XK xX

x XXX xX x

x xX

SAvalIr.

251

FURTHER DISTRIBUTION.

Throughout the Tropics.

Celebes to the Pacific, Aus-

tralia.

Seychelles to the Pacific.

Cosmopolitan.

Fiji, Tonga, Wallis.

East Africa to Papua.

Widely distributed in the

Tropics.

Hawai, Tonga, Marquesas,

Pitcairn IJ.

Mascarenes, Ceylon, Hawaii,

Marquesas.

252 INSECTS OF SAMOA.

From this statement it will be seen that only 8 of the species are known to

occur outside the Pacific islands, and of these all except one (Pentarthrum

cylindricum, Woll.) are associated with cultivated plants, and have therefore

probably been introduced by human agency.

Of the remaining 78 species only 9 occur also in other islands of the Pacific,

so that no less than 69 (80 per cent.) must at present be regarded as being peculiar

to the Samoan Islands.

When we turn to the genera, we find that 15 (Cylas, Rhynchaenus, Acalles,

Mecistocerus, Mecopus, Cosmopolites, Calandra, Diocalandra, Dryophthorus,

Pentarthrum, Stenotrupis, Phloeophagosoma, Cossonus, Proéces, Rhyncolus) are

widely distributed in other regions, these being principally CossonINAE and

CALANDRINAE. Of the remaining genera that are also found outside of the

Pacific islands, 6 occur throughout the Indo-Australian Region (Deretiosus,

Chaetectetorus, Trigonopterus, Ampagia, Diathetes, Rhabdocnemis) ; 9 occur only

in the Oriental and Papuan Sub-regions (Trigonops, Acicnemas, Orochlesis, Omo-

baris, Polytus, Oxydema, Rhyncolosoma, Ochronanus, Stereoderus) ; 3 occur only

in Australia (Microcryptorrhynchus, Aphanocorynes, Notiosomus) ; one in New

Zealand (Mierotribus) ; and one in South America (Anaballus).

There thus remain 20 genera that are restricted to the Pacific islands, namely :

Ottinychus, Sphaerorrhinus, Elytrurus, Nodocnemus,* Hesychobius, Amblycnemus,*

Nesendaeus,* Cranopoeus, Spanochelus,* Hlytrotenus, Phanerostethus,* Dere-

tiodes,* Teleodactylus,* EHremonyx, Nesobaris, Glyphostethus,* Dynatopechus,

Gitonischius,* Pseudolus, and Mystrorrhinus * ; and of these the 10 marked with

an asterisk are known only from the Samoan Islands.

These data suggest that the Samoan fauna has been derived from the Malay

Archipelago by way of New Guinea, and not from the south ; for the three genera

mentioned as occurring elsewhere only in Australia belong to groups that have

not yet been adequately searched for in New Guinea, and their occurrence in that

country may be anticipated with some degree of assurance.

As to the relationship of the Samoan fauna to those of the other Pacific

groups, there is as yet too little information to enable us to come to any satis-

factory conclusions. All that can be said is that the present indications are that

its closest affinities are with Fiji, for of the ten Pacific genera that also occur

outside of Samoa, all are to be found in Fiji. However, when the insects of Tonga

and Tahiti are better known, it seems probable that they will show an even

closer relationship to those of Samoa.

CURCULIONIDAE. 253

It is interesting to note the marked paucity in Samoa of the leaf-eating

groups, represented by the first six sub-families. The sub-cortical CossoNINAE

are the most dominant group (28 species), constituting one-third of all the

species, this being apparently a usual feature in tropical and sub-tropical islands.

The next most numerous group is the CRYPTORRHYNCHINAE (26 species), which

mostly frequent the bark of trees and shrubs. These weevils attain their greatest

development in tropical forests, especially in the Indo-Australian Region and

America ; but for some unexplained reason they are not nearly so numerous, in

proportion to other sub-families, in Africa.

The types of the new species described below are in the British Museum

(Natural History), unless otherwise stated.

BRACHYDERINAE.

Ottinychus, gen. nov.

In Dr. K. M. Heller’s revision of the genera of the tribe OrrisTIRINI (Ween.

Ent. Zg., xl, p. 57, 1925), the species for which this new genus is proposed have

the characters of Ottistira, Pasc., 1875 ; but they differ from this and from all

the other genera of the tribe in having only a single claw to the tarsi—an un-

usual character. Oftvstvra differs, moreover, in having the epistome delimited

posteriorly by a transverse furrow, whereas this furrow is entirely absent in

Ottenychus, a condition that is found in only one other genus of the group, the

monotypic Tistortia, Hilr. 1925. Apart from its tarsal claws, the latter genus

differs from Ottinychus in having the inter-scrobal space on the dorsum of the

rostrum nearly as wide as the forehead, whereas in Ottinychus itis about half that

width.

Genotype, Ottenychus buxtoni, sp. n.

Specimens of this genus have been seen from Fiji.

1. Ottinychus buxtoni, sp. n. (Text-figs. 1, 2).

6g. Derm dull black or piceous, with indistinct, blackish scaling and markings

of green scales; the rostrum with green scales on the basal half of the dorsum

and on the genae ; the head with a ring of green round the eyes, and a few green

scales in the middle of the forehead ; the prothorax, with the pleurae (except

near the base) and a narrow median dorsal stripe, green ; each elytron with the

254 INSECTS OF SAMOA.

following green markings: a very variable, macular patch before the middle

(often broken up into separate spots, but never reaching the base), an elongate,

oblique, sub-elliptical patch at the top of the declivity between striae 1 or 2 and

6, and a short stripe on the lateral margin at the apex; a large, fairly dense

TEXT-FIG. 1.—Ottinychus buxtoni, sp. n.

green patch on each side of the metasternum, and a few green scales at the sides

of the two basal ventrites.

Head with the coarse punctation partly concealed by the scaling; the

forehead almost flat and about as broad as the width of an eye, and the space

between the eye and the prothorax less than the width of the scrobe in its basal

part ; the eyes large, almost circular, and more convex than the head. Rostrum

CURCULIONIDAE. 255

(without the mandibles) much broader than long and shorter than the head, the

dorsal profile forming an almost continuous line with the forehead in the basal

half and steeply declivous in the apical half, which is devoid of scales and bears

a few coarse punctures; the dorsal (longitudinal) portion of the scrobe very

short and broad, being much broader than the space between itself and the eye,

the downward portion almost as broad as the narrowest part of the gena, which

is unusually narrow. Antennae red-brown ; the scape rather stout, curved and

gradually clavate; the funicle with joint 1 slightly longer and much thicker

than 2, joints 3 and 4 about as long as broad, the remainder slightly transverse.

Prothoraz slightly broader than long (7 : 6), rounded at the sides, widest at the

middle, the basal margin truncate and dis-

tinctly wider than the apex, which is arcuate ;

the dorsum gently convex longitudinally

and set throughout with rather coarse

punctures, each containing a very short re-

cumbent seta. Scutellwm small, punctiform,

with dense grey scaling. Llytra ovate,

widest at the prominent and rounded-rect-

angular shoulders, gradually narrowing

behind, and laterally constricted before the

aaa vite LS nS P socmeet un p HREE n Text-Fic. 2.—Ottinychus buxtoni, sp. 0.,

the striae deep, the contained punctures lateral view of head and prothorax.

larger near the base than those on the

pronotum, but diminishing behind ; the intervals rather broader than the striae,

smooth and without granules or prominences, interval 1 being somewhat raised

from before the middle to the declivity ; a single row of very minute, recumbent

setae on each interval. Legs rather stout, black, with fairly dense green scaling

on the outer face of the femora and on the dorsal edge of the tibiae ; the tibiae

only slightly compressed, the external apical angle projecting sharply on the

posterior pairs; the second tarsal joint not overlapping the base of the third.

Sternum with the mesosternal process broader than long, truncate at the apex,

bare and coarsely punctate.

Length: 2-1-3-0 mm.; breadth, 0-9-1-2 mm.

Upolu: Malololelei, 2,000 ft., 6 Jg, 2 99, vi.1924, 1 3, 18.1v.1925.

256 INSECTS OF SAMOA,

2. Ottinychus hopkinsi, sp. n.

39. Derm testaceous brown to piceous, densely covered above with light

brown scaling, which has a more or less coppery reflection, the colouring being

occasionally almost uniform, but usually with very variable, indefinite, dark

brown markings on the elytra and with two ill-defined, admedian, darker, longi-

tudinal stripes on the pronotum ; the sternum (except the middle of the meta-

sternum) and the basal and lateral margins of the venter with pale, opalescent

scaling.

Head with the sculpture entirely hidden by the scaling ; the forehead some-

what flattened, about as broad as the width of an eye, and the space between the

eye and the prothorax much greater than the width of the basal part of the

scrobe ; the eyes very broadly ovate and scarcely more convex than the head.

Rostrum, in its general shape, like that of O. buxtoni, but rather longer and with

the apical slope somewhat less steep ; the dorsal portion of the scrobe short and

about as broad as the space between itself and the eye, the downward portion

not one-third the width of the narrowest part of the gena and hardly so wide

as the space between the scrobe and the eye; the genae much broader than

in O. buatont. Antennae honey-brown ; the scape curved, slender and rather

abruptly clavate ; the funicle with joint 1 a little longer than 2 + 3, joints 3-7

all transverse and becoming progressively wider. Prothorax slightly broader

than long (8:7), rounded at the sides, widest a little beyond the middle, sub-

truncate or feebly bisinuate at the base and much narrower at the apex, which

is gently arcuate ; the dorsum slightly convex longitudinally, closely and strongly

punctate throughout (less coarsely so than in buatonz), but the punctures partly

obscured by the scaling (except in the middle) and each containing a minute,

recumbent seta. Scutellum minute, punctiform, slightly elevated. Hlytra

ovate, widest a little behind the shoulders, which are oblique and much less

prominent than in buxtont, separately rounded at the base, feebly constricted

laterally behind, and with the apical region not produced ; the striae narrower

and shallower than in buxtont, the contained punctures smaller and partly hidden

by scaling ; the intervals much broader than the striae, even, densely squamose,

and without obvious setae ; the suture somewhat elevated on the declivity. Legs

stout, red-brown, densely squamose; the tibiae markedly compressed in the

apical half, so that the dorsal edge is there sub-carinate, and the external apical

angle rounded off on the posterior pairs; the tarsi with the second joint over-

CURCULIONIDAE. 257

lapping the base of the third. Sternum with the mesosternal process longer than

broad, rounded at the apex, and densely squamose.

Length: 2-4-3-0 mm.; breadth, 1-0-1-2 mm.

Upolu: Malololelei, 2,000 ft., 10 gg, 4 29, vi.1924.

OTIORRHYNCHINAE.

3. Sphaerorrhinus puncticollis, Marshall.

Proc. Hawatian Ent. Soc., iv, p. 585, 1921.

Tutuila: centre of island, 700-1,200 ft., vitx.1918 (Kellers—type) ;

Pago Pago, 2 gd, 30.ix.1923 (Swezey and Wilder), 3 gg, 3 99, 1v.1924 (Bryan),

1 3, 14.xii.1925.

Manuw’a: Ofu, 2 fg, 1 2, 27.11.1926 (Judd).

The specimens from Manu’a differ in having the scaling pale, metallic green

instead of greyish white.

4. Sphaerorrhinus mutans, sp. n.

$. Derm black; the rostrum with thin grey scaling ; the head with sparse

brown scaling, becoming paler and denser adjoining the eyes; the pronotum

with black scaling and an indefinite, bilateral stripe of pale fawn or grey extending

from the basal angle to two-thirds of the length ; the elytra with black scaling

and with the following pale fawn or grey markings: a large, irregular patch

between striae 2 and 7, extending from a little before the middle to the top of

the declivity and curving inwards behind, a small spot at the basal angle

adjoining the thoracic stripe, and a broad, common, V-shaped patch at the

apex, which sometimes joins the discal patch and sometimes is absent; the

underside with irregular, sparse, fawn or grey scaling.

Head with strong and close, but not confluent, punctation; the eyes

moderately prominent. Rostrum with the declivous, anterior portion (without

the mandibles) shorter than the horizontal basal part, flat, and with sparse, fine

punctures ; the basal part with coarse punctures that are normally hidden by

scaling, leaving a very narrow, smooth, median line. Antennae red-brown, with

the scape moderately curved, gradually clavate, and with sparse, small, round

scales (often abraded) and sub-recumbent, pale setae; the funicle with all the

joints longer than broad, the order of relative length being: (1, 2), 3, (4, 5, 6, 7).

Prothorax about as long as broad, parallel-sided close to the base, strongly

258 INSECTS OF SAMOA.

rounded anteriorly, widest a little beyond the middle, and with the apex only

slightly narrower than the base ; the sides compressed at the base, and with a

short, longitudinal fold above the compression ; the whole surface strongly and

closely punctate, leaving a very narrow, variable, smooth, median line in the basal

half, the interspaces everywhere (including the pleurae) narrower than the

punctures, each of which contains a minute, transversely recumbent seta. Hlytra

ovate, widest before the middle, rapidly and regularly acuminate behind, only

slightly constricted laterally before the apex; the dorsal outline moderately

convex, not continuous with that of the pronotum, the posterior declivity not

very steep ; the ten rows of deep, separated punctures are fairly regular and not

striate, but behind the middle there are additional, confused punctures between

rows 7 and 9, the punctures separated in the rows by at least their own length

and almost concealed where the scaling is pale ; the intervals broad and smooth,

interval 3 having at the top of the declivity a slight elevation that bears a few

minute, recumbent, white setae ; similar longer setae irregularly scattered on the

declivity. Legs red-brown, with black scaling and sparse, sub-recumbent, pale

setae ; the femora with scattered, pale scales towards the base and apex, and

with a dense, pale patch on the lower surface of the clavate portion.

2. Much broader than the 3, with the elytra narrowing more gradually

behind to near the apex, where they are sharply constricted, the apical portion

being abruptly acuminate and the declivity steeper. The black scales of the

6 are largely or entirely replaced by grey or fawn, so that the pale patches are

much less conspicuous or even quite obliterated. On intervals 3, 5, 6, 7 there

are several variable, small, obtuse elevations (especially about the top of the

declivity), which bear small tufts of erect, white setae, the tufts on interval 3

being longer than the others.

Length: § 3:9-4:2 mm., 94:5-5-4 mm. ; breadth, ¢ 1-8-1-9 mm., 2 2-4-2-7

mm.

Upolu: Malololelei, 2,000 ft., 19 3g (type), 35 29, i11., iv., xi.1924 ; Aleipata

(sea-level), 1 9, iv.1924.

Allied to S. puncticollis, Mshl. 1921, which, however, differs in having much

finer punctures on the elytra,* these being much smaller than those on the

pronotum ; whereas in mutans the punctures are almost similar on these two

areas. Again, the 9 of puncticollis has no elevations or erect setae on the elytra.

* Jn the original description (loc. cit.) these punctures are described as “ finely ”’ separated ;

this is a misprint for “ widely.”

CURCULIONIDAE. 259

5. Elytrurus samoensis, Marshall.

Proc. Hawaiian Ent. Soc., iv, p. 587, 1921.

The typical specimens were labelled Samoa, without any precise locality,

and the species is not represented in the collections now being dealt with.

TExt-FIG. 3.—Llytrurus bicolor, Marshall, 3.

260 INSECTS OF SAMOA.

6. Elytrurus bicolor, Marshall (Text-fig. 3).

Proc. Hawauan Ent. Soc., iv. p. 588, 1921.

E. bwwittatus, Marshall, loc. cit. (n. syn.).

Upolu: Malololelei, rain forest, 2,000 ft., 2 99, 26.iv.1924 (Bryan), 5 gd,

5 9, iv., v1., vi.1924 ; Apia, 1 g, 7.vii.1925 (Wilder).

Savau: Safune, 1 g, 1 9, v.1924 (Bryan).

Tutuila : Leone Road, 1 3, 24.11.1926 (Judd).

With the series now before me I cannot doubt that, in spite of its very

different appearance, HL. bivittatus is merely the male of bicolor.

7. Trigonops spongicollis, Fairmaire.

Rev. Zool., (2) i, p. 505, 1849.

Upolu: Aleipata, 3 gg, 3 29, iv.1924.

Savaii: 1,000 ft., 1 g, 1 9, 21.1x.1925.

Tutuila: Amauli, 1 9, 6.1x.1923 (Swezey and Wilder); Laulu, 3 $9,

31.11.1926 (Judd).

Originally described from Tahiti.

ERIRRHININAE.

Nodocnemus, gen. nov.

Head pyriform; eyes somewhat convex, their curvature not continuous

with that of the temples ; frons narrower than the base of the rostrum. Rostrum

elongate, deflected, dorso-ventrally compressed beyond the antennae, which are

inserted at one-third from the apex in both sexes, with the apical margin sub-

truncate ; scrobes entirely lateral and extending to the eyes ; mandibles sharply

tricuspid, decussate. Antennae elongate and slender; scape reaching the eye,

clavate; funicle 7-jointed; club elongate, elliptical, unsegmented. Prothorax

transverse, sub-conical, almost as wide at the base as the elytra, not marginate

laterally. Scutellum distinct. Llytra not fitting very closely to the abdomen

posteriorly, separately rounded at the apex and leaving the pygidium rather

broadly exposed, and with nine rows of punctures. Legs with the femora

strongly clavate and unarmed ; tibiae straight, without any trace of an apical

mucro, the corbels of the posterior pairs slightly ascending the dorsal edge ;

tarsi broad, the claws simple and divaricate. Sternum with the front coxae

distinctly separated and close to the hind margin of the prosternum, which is

CURCULIONIDAE, 261

elongate in front of the coxae ; the meso-sternal process nearly twice as broad

as long, as wide as a coxa, and broadly truncate behind ; the mesepimera much

larger than the mesepisterna and widely separating them from the elytral margin ;

the mesosternum between the coxae longer than a median coxa. Venter

strongly convex transversely, with the intercoxal process broad and obtusely

angulate ; ventrite 1 with the apical margin deeply sinuate in the middle, and

2 medianly as long as 3 + 4.

Genotype: Nodocnemus subfasciatus, sp. n.

The species for which this genus is proposed is a somewhat aberrant and

comparatively soft-bodied insect ; but in spite of the lack of the lateral margins

on the prothorax and the exposed pygidium, there can be no doubt that it should

be placed in the tribe DERELOMINI, and in these two characters it agrees with

the otherwise very different-looking Derelomorphus, Mshl. 1928, from Malaya.

The solid antennal club is a very unusual character in the ERIRRHININAE.

8. Nodocnemus subfasciatus, sp. n. (Text-fig. 4).

6@. Colour dull black, clothed above with fine, recumbent, blackish pubes-

cence, with markings formed of similar grey pubescence ; pronotum with the

sides very broadly and indefinitely grey ; elytra with a common broad, sinuated

grey band before the middle, attaining the lateral margins and produced forwards

in the middle so as to reach the scutellum on the suture, and a large, transverse,

sub-apical grey patch extending from stria 1 almost to the lateral margin ; the

lower surface thinly clothed throughout with grey pubescence.

Head slightly constricted behind the eyes, closely punctate, the punctures

becoming smaller and denser anteriorly, and entirely bare ; the frons somewhat

flattened and-with a short median sulcus. Rostrum slightly shorter than the

basal width of the pronotum, strongly curved, parallel-sided from the base to the

antennae, and thence gradually dilated to the apex, closely set with fine, elongate

punctures, which are sparser near the apex, and’with a short, fine, median stria

between the antennae ; in the basal half or basal third two very feeble, narrow

carinae, which unite at the base ; scrobes entirely invisible from above. Antennae

red-brown, with the basal half of the club blackish ; funicle with joint 1 nearly

as long as 2-4, 2 as long as 3+-4, 2 and 3 longer than broad, 4—7 moniliform and

262 INSECTS OF SAMOA.

about as long as broad. Prothorax only slightly longer than half the basal

width (11 : 21), widest at the base (which is more than twice as wide as the apex),

gradually narrowing from the base to near the middle, then more rapidly rounded,

and shallowly sub-tubulate at the apex ; the base bisinuate and with the angles

acutely produced backwards, the apex truncate dorsally and vertical laterally ;

dorsum almost flat longitudinally, evenly covered throughout with dense, small

punctures ; the basal margin with a distinct carina in the middle, which gradually

7) \

Trxt-FIc. 4.—Nodocnemus subfasciatus, sp. n., 3; a, lateral view of head and prothorax.

disappears laterally. Scutellum shield-shaped, with grey pubescence. Elytra

ovate, only slightly wider at the obliquely rounded shoulders than the base of

the prothorax, rather rapidly narrowing from behind the shoulders to the broadly

rounded apex, and without any posterior calli or constriction ; the regular rows

of fine, separated punctures scarcely striate, the intervals broad, flat and finely

shagreened. Legs black, finely shagreened and with thin, grey pubescence ;

tarsi with joint 2 transverse and shorter than 3, the claws testaceous brown.

CURCULIONIDAE. 263

Pygidium of 3 with dense, shallow, sub-confluent punctures, broadly rounded at

the apex, and without any impression ; that of 2 more narrowed behind, and

with a shallow, median longitudinal impression near the apex.

Upolu: Malololelei, 1 3, 2 99, in flowers of a native palm, 5.x11.1925.

Hesychobius, gen. nov.

Head, globular, the forehead somewhat narrower than the base of the

rostrum; the eyes rather narrowly separated beneath, their curvature con-

tinuous with that of the head. Rostrwm elongate, deflected, stouter than the club

of the front femora ; the scrobes deep, straight, oblique, not uniting at the base,

and almost reaching the apex; the mandibles decussate and bidentate; the

mentum transverse, smooth and resting on a broad peduncle. Antennae inserted

near the apex of the rostrum; the scape slender, cylindrical and reaching the

eye; the funicle 7-jointed, with the two basal joints elongate and equal; the

club ovate. Prothorax bisinuate at the base, with feeble post-ocular lobes,

which partly conceal the eyes, and the gular margin broadly sinuate. Scutellwm

distinct. Hlytra oblong-ovate, much wider at the shoulders than the prothorax,

separately rounded at the base, with ten complete striae. Legs slender; the

femora strongly clavate and with a sharp tooth, the hind pair not reaching the

apex of the elytra; the tibiae with a long apical mucro ; the tarsi with joint 2

transverse and 4 elongate; the claws large, simple and divaricate. Sternum:

the front coxae inserted far behind the middle of the prosternum ; mesepisterna

separated from the elytra by the mesepimera; metasternum elongate, its

episterna broad and parallel-sided. Venter with the intercoxal process ogival ;

ventrite 2 separated from 1 by a sinuate incision and as long as 3+4.

Genotype, Hesychobius nebulosus, sp. n.

The nearest ally of this genus appears to be the palaearctic Procas, Steph.,

with which it agrees according to Lacordaire’skey. Procas differs, however, inter

alia, in having the femora unarmed, the eyes widely separated beneath, the scrobes

parallel with the long axis of the rostrum, and the elytra jointly sinuate at the

base.

I have seen a very closely allied species from Fiji.

264 INSECTS OF SAMOA.

9. Hesychobius nebulosus, sp. n. (Text-fig. 5):

3d. Derm red-brown to piceous, densely squamose on the upper surface,

and almost entirely bare beneath ; the head and rostrum with pale buff scaling ;

the pronotum buff on the disk, gradually turning to white at the sides and with a

very faint, narrow median paler stripe, the lower edge of the lateral squamose area

aIN*

fk wit

TExt-FIG. 5.—Hesychobius nebulosus, sp. n., 3.

sharply defined and with a strong,

downward angulation at the

middle; the elytra with the

intervals on the inflexed margins

bare from the base to the level of

the apex of ventrite 3, except for

a large patch of white scales

adjoining the metasternum ; the

dorsum buff or greyish, with a

very ill-defined, oblique, whitish

stripe from behind the shoulder

to the suture near the top of

the declivity, becoming narrower

and very indistinct posteriorly,

and with some indefinite, whitish

mottling on the apical area and

around the shoulders; underside

with a few rounded, white scales

on each side of the two basal

ventrites, and sometimes a patch

of buff or grey scales on each side

of the metasternum, all the

punctures bearing a short, white,

recumbent seta.

Head with dense, fine punctation and a few rather larger punctures, all

normally hidden by scaling; the forehead rather abruptly flattened anteriorly

and with a small median forea. Rostrum about as long as the head and prono-

tum, gently curved, sub-cylindrical from the base to the antennae, the apical area

distinctly broader but parallel-sided ; the dorsum convex transversely, finely

and closely punctate, and with numerous, much larger punctures (partly hidden

CURCULIONIDAE. 265

by scaling) ; between the antennae a short median sulcus and a fine, oblique

carina on each side of it. Antennae with the scape gently curved, gradually

clavate and sparsely setose ; joint 3 of the funicle longer than broad, 4 and 5

as long as broad, 6 and 7 transverse. Prothorax as long as broad, parallel-sided

from the base to the middle, and narrowing rather rapidly in front without any

marked constriction, shallowly bisinuate at the base, the apex truncate dorsally ;

the disk flattened in the middle of the basal half, with very fine, close punctation

throughout and irregular, large, shallow punctures; the sculpture hidden by

scaling and sparse, short, recumbent setae. Scutellum sub-quadrate, bare.

Elytra slightly arcuate separately at the base, parallel-sided from the roundly

prominent shoulders to beyond the middle, slightly dehiscent at the apex, and

with the posterior callus obsolescent; the striae appearing fine and shallow

through the scaling and narrower than the punctures ; the intervals with con-

cealed, minute punctation, and each with a row of very short, recumbent setae,

which on intervals 1-3 are borne on minute, concealed granules.

Length, 6-0-7-8 mm. ; breadth, 2-4-3-3 mm.

Samoa: 1 ¢ (Deutsch. Ent. Inst.).

Upolu: Malololelei, 2,000 ft., 2 $3, 24-25.11.1924 (type).

APIONINAE.

10. Cylas formicarius, Fabricius.

Brentus formacarius, Fabricius, Ent. Syst. Suppl., p. 74, 1798.

Cylas turcipennis, Boheman, Schénh. Gen. Curc., 1, p. 369, 1833.

Tutuila: Pago Pago, 1 g, 20.ix.1923 (Swezey and Wilder).

This common pest of sweet potatoes is distributed practically throughout

the tropics.

ANTHONOMINAE.

Amblycnemus, gen. nov.

Head sub-globular, with the frons rather narrower than the base of the

rostrum ; eyes widely separated beneath, their curvature continuous with that

of the head. Rostrum elongate, moderately slender, with the antennae inserted

much beyond the middle in both sexes ; scrobes oblique, rapidly passing beneath

the rostrum; mandibles dentate and decussate. Antennae elongate ; scape

slender, cylindrical and gradually clavate ; funicle with only six joints; club

rather loosely four-jointed. Scuéellum small, but distinct. Hlytra broadly

Iv. 5 2

266 INSECTS OF SAMOA.

ovate, much broader at the sub-rectangular shoulders than the base of the pro-

thorax, with ten striae (the tenth abbreviated), and without posterior calli ;

the suture curving to the left at the apex, so that interval 1 of the right elytron

is there much broader than interval 1 of the left. Wangs functional. Sternum :

prosternum distinctly excavated in front of the coxae, and there slightly

longer than behind the coxae, which are very narrowly separated, but the

apical margin hardly sinuate; mesosternum with the side-pieces fused, the

intercoxal process sloping forward, broadly truncate behind, being there

nearly as wide as a coxa; metasternum between the coxae about as long

as the median coxa and tumid, with three rounded impressions along the

hind margin, and the episternal suture very fine, but complete. Legs rather

long and slender; femora moderately clavate and unarmed, the hind pair

reaching to about the apex of the elytra; tibiae sub-compressed, quite

straight on the lower edge, with a fine, dorsal carina, and without any trace

of an apical mucro; tarsi with joint 1 as long as 2+3, 2 trapezoidal, 3 longer

than 2, very broad and deeply bilobate, the claws divaricate and obtusely

appendiculate at the base. Venter with the intercoxal process gently arcuate

and about as broad as one of the coxae, which do not reach the elytra ; ventrite

1 fused in the middle with 2; 2 as long as 3+-4.

Genotype, Amblycnemus stevenson, sp. 0.

A somewhat aberrant genus, perhaps nearest to the African Thamnobius,

Schénh. 1836, but differing from all the other genera of the sub-family known to

me in its excavate prosternum and narrowly separated front coxae. The com-

plete absence of an apical mucro on the tibiae is also an unusual character (the

only other case in the sub-family known to me being the genus Huclyptus, Dietz

1891), and this, together with the 6-jointed funicle, the very broad, mesosternal

process, and the fusion of the two basal visible ventrites, sufficiently distinguish

the genus.

11. Amblycnemus stevensoni, sp. n. (Text-fig. 6).

$@. Colour rather dull black, with a few scattered, elongate, white scales,

mostly on the lower surface ; rostrum often piceous or red-brown; antennae

and tarsi testaceous brown.

Head with coarse, separated punctures, each containing a short, recumbent,

CURCULIONIDAE. 267

pale seta ; frons with a short median sulcus. Rostrum of J as long as the head

and pronotum, gently curved, parallel-sided in the basal half and then slightly

widening to the apex, with the antennae inserted at one-fifth from the apex ;

the dorsum with a distinct median carina and two shorter ones on each side, the

intervening sulci opaque, obsoletely punctate and with rows of setiform scales,

which are directed backwards on the dorsum and transverse laterally ; rostrum

of 9 a little longer, without any carinae or scales, and with the antennae inserted

TExtT-FIG. 6.—Amblycnemus stevensont, sp. n., 9.

at one-fourth from the apex; the dorsum broadly impunctate down the middle

(the area regularly widening from base to apex), with a single row of punctures

on each side, and below this two shallowly punctate sulci. Antennae with the

funicular joints successively diminishing in length, 1-4 longer than broad, 5 as

long as broad, and 6 slightly transverse. Prothoraz transverse, gently rounded

at the sides, broadest behind the middle, broadly and shallowly constricted at

the apex, the constriction not continued across the dorsum ; the apical margin

268 INSECTS OF SAMOA.

truncate dorsally and somewhat oblique laterally, the base shallowly bisinuate ;

the dorsum slightly convex longitudinally, closely set with coarse punctures and

with a broad, impunctate median line on the basal half, the punctures on the

pleurae more sparse and irregular ; the dorsal punctures each with a small,

recumbent, pale seta, and in the middle of the basal margin a transverse patch

of small setiform scales ; the lower pleural punctures with comparatively large,

ovate or lanceolate, white scales. Scutellum ovate, bare, opaque. Llytra ovate,

almost parallel-sided from the prominent and roundly rectangular shoulders to

the middle, jointly rounded and obtusely acuminate at the apex, and sloping

rather steeply forwards at the extreme base; the striae broad and strongly

punctate, the punctures scarcely diminishing behind; the intervals gently

convex, about as broad as the striae, smooth and impunctate, with a few scattered,

lanceolate white scales and sparse, recumbent, pale setae (apparently easily

abraded). Legs with the femora rather coarsely but shallowly punctate, and

with short, recumbent, white setae ; tibiae opaque, with a distinct dorsal carina

and obsolescent Jateral ones. Venter with the two basal ventrites shiny, the

remainder opaque ; ventrite 1 with a coarsely punctate basal sulcus, and a few

strong punctures on the disk of 1 and 2, sometimes forming two irregular, trans-

verse rows on each; the punctures on the remaining ventrites obsolescent.

Length : 2:2-2-3 mm. ; breadth, 1-2-1-3 mm.

Upolu: Apia, 1 g, x.1925 (Buxton and Hopkins—type), 1 9, on leaf of

coconut on R. L. Stevenson’s grave, 13.1x.1923 (Swezey and Wilder) ; Mt. Vaea,

1,500 ft., Apia, 1 g, 1 9, 20.11.1924; Vailima, 1 9, 24.v.1924, 1 g, 1.1925;

Tuaefu, 1 9, 16.ix.1923 (8. & W.); Vaea, 400 ft., 1 9, 25.iv.1924 (Bryan) ;

Malololelei, rain forest, 2,000 ft., 1 9, 26.1v.1924 (Bryan).

Tutuila: Pago Pago, 1 4, 9.1x.1923 (Swezey and Wilder), 1 9, 14.x11.1925

(Buxton and Hopkins).

Rhynchaenus, Clairv. 1798.

No species of these small, jumping weevils appears to have been recorded

previously from the Pacific islands, but this is probably due to the fact that

they have not been adequately collected. A good many species are known

to me from the tropics of the Old World, but practically all of them are

undescribed.

CURCULIONIDAE. 269

12. Rhynchaenus samoanus, sp. n.

32. Derm piceous ; the head and prothorax thinly, the elytra more closely,

covered with short, recumbent, grey setae, usually having a brassy reflection ;

there are often variable, darker patches on the elytra where the setae are more

sparse ; the underside with the setae very sparse, except on the side-pieces of

the mesosternum and metasternum, where they are rather more dense than on

the elytra.

Head with the eyes quite contiguous and only shghtly projecting from the

head. Rostrum nearly as long as the head and pronotum, stout, moderately

curved, with the antennae inserted at one-third from the base in the 9 and nearer

the middle in the 3, and the basal portion with five carinae. Antennae testa-

ceous ; the funicle with six joints, the order of length being: 1, 2, 3 (4, 5, 6),

the last three transverse. Prothorax transverse, widest actually at the base,

rapidly narrowing with a curve to the apex, and without any sub-apical constric-

tion ; the dorsum convex longitudinally (the apex lower than the base), closely

set throughout with very shallow, confluent punctures, sometimes forming

irregular, transverse wrinkles, and without any median longitudinal impression ;

the setae lying longitudinally, except at the sides of the apex and base, where

they are transverse ; no projecting lateral setae. Scwtellwm small, concolorous.

Elytra broadly sub-elliptical, very oblique at the shoulders, broadly rounded at the

apex, and without dorsal or sub-apical impressions ; the striae moderately deep,

with shallow punctures each containing a recumbent seta ; the intervals broader

than the striae and with very shallow, transversely rugose punctures ; the setae

all recumbent and rather denser along the suture than elsewhere. Legs red-brown,

with the hind femora and tibiae darker, and all the tarsi paler ; the hind femora

very broad, with two minute, blunt teeth and a few erect setae along the lower

edge.

Length : 2:0-2:4 mm. ; breadth, 0-9-1-1 mm.

Tutuila: Pago Pago, 1 3, 14.xii.1925 (Buxton and Hopkins—type), 1 9,

30.1x.1923 (Swezey and Wilder).

Savaii: Safune, 1 9, 3.v.1924, rain forest, 2,000-4,000 ft., 2 29, 5.v.1924,

lower forest, 1,000-2,000 ft. (Bryan).

270 INSECTS OF SAMOA.

TYCHIINAE.

Nesendaeus, gen. nov. ©

Head with the eyes large, very convex, coarsely faceted; the forehead

nearly as broad as the base of the rostrum. Rostrum rather narrow, elongate,

somewhat compressed dorso-ventrally near the apex; the scrobes straight and

running obliquely to beneath the base of the rostrum ; the mandibles bidentate,

decussate. Antennae inserted beyond the middle of the rostrum; the scape

reaching the eye, slender, straight, clavate; the funicle 7-jointed; the club

rather large, ovate. Prothoraz of almost equal width at base and apex, with the

gular margin truncate. Elytra ovate, much broader at the shoulders than the

prothorax, with ten punctate striae (stria 10 abbreviated), not constricted behind,

jointly rounded at the apex, and concealing the pygidium. Wangs functional.

Sternum with the front coxae contiguous and nearer to the base than to the

apex of the prosternum. Legs: all the femora with a stout, sharp tooth; the

tibiae widened in the distal half and with a small uncus on the anterior pairs ;

the tarsi short, with the claws appendiculate. Venter: ventrite 2 hardly as

long as 3+-4 and with its lateral, apical angle produced backwards.

Genotype, Nesendacus setolineatus, sp. n.

This genus belongs to Lacordaire’s group ELLEScHIDES, being nearly related

to the African and Oriental genus Endaeus, Schonh. 1826, which differs in having

only six joints to the funicle and the prothorax much narrower at the apex than

at the base.

13. Nesendaeus setolineatus, sp. n. (Text-fig. 7).

32. Uniform honey-brown, with the eyes black.

Head with strong, close punctation throughout and sub-recumbent pale

setae. Rostrum of 3 a little longer than the pronotum, almost straight, parallel-

sided to the antennae, which are inserted at about one-fourth from the apex,

slightly wider in the apical part, with four shallow rows of punctures and a fine,

abbreviated median stria; of 9, a little longer than the head and pronotum,

more curved, with the antennae inserted at two-fifths from the apex, the puncta-

tion being almost similar to that in ¢. Antennae with the scape rather longer

than the funicle; joint 1 of the funicle as long as 2+3-+4, 2 longer than

CURCULIONIDAE. 271

broad (equal to 3+4), the rest transverse, 3-6 equal, 7 broader. Prothorax

broader than long (5: 4), strongly rounded at the sides, widest at the middle,

only slightly narrower at the apex

than at the base, and with the

apical constriction almost obsolete ;

the dorsum flat longitudinally,

closely punctate, with sparse, fine

pubescence and _ transverse or

oblique recumbent setae. Scutellum

dark brown, bare. Elytra ovate,

with the close punctures in the

striae only slightly diminishing

behind ; the intervals broader than

the striae, with minute, shallow

punctures, sparsely pubescent, and

each with a row of short, recumbent

setae aligned so that the apex of

one seta usually touches the base of

the next. Legs finely pubescent ;

the femora with a small tuft of

erect setae between the sharp, tri-

angular tooth and the apex.

Length : 2-0-2-4 mm. ; breadth,

1-0-1-:1 mm.

Upolu: Malololelei, 2,000 ft., 1 ¢ (type), 22.xi.1924, 1 J, 18.iv.1925 ; Vailima,

600 ft., 1 2, 18.x.1924,

Text-Fic. 7.—WNesendaeus setolineatus, sp. n., 2.

ACICNEMIDINAE.

14. Acicnemis variegata, Fairmaire.

Rev. Zool., (2) i, p. 511, 1849; Ann. Soc. Ent. France, (6) i, p. 298, 1881 ; Hubenthal, Arch. Naturg.,

83, A. 8, p. 158, 1919.

A. alboguttata, Chevrolat, Pet. Nowv. Ent., i, p. 227, 1878.

A. foveicollis, Heller, Denks. K. Akad. Wiss. Wien., Math.-Naturw. Kl., 89, p. 695, 1915 ; Huben-

thal, op. cit., A. 9, p. 53, 1919 (n. syn.).

In his revision of the genus Acicnemis, Hubenthal (l.c.) treats A. foveicollis

as a distinct species occurring only in Samoa, whereas A. variegata is recorded

272 INSECTS OF SAMOA.

from Fiji, Tahiti, Tonga and Wallis Islands. But after careful examination of a

fairly long series of specimens from Fiji, Samoa and Tahiti (type locality), it

seems clear that the distinctions cited by Hubenthal are merely minor individual

differences that are not even of sufficient importance to justify the use of a varietal

name. The specimens in the present collection are from the following localities.

Upolu: Apia, 11 gg, 10 99, i1.1924—xii1.1925 ; Malololelei, 2 gg, iv.1924 ;

Aleipata, 1 3, x1.1924.

Tutuila: Amauli, 1 4, 5.ix.1923 (Bryan) ; Leone Road, 1 4g, 7.1x.1923

(Swezey and Wilder), 1 9, 24.11.1926 (Judd); Pago Pago, 8 gg, 6 99, under

rotten bark, ix.1923 (Swezey and Wilder), 1 3, 14.xii.1925.

15. Acicnemis biconifera, F'airmaire.

Pet. Nouv. Ent., 1, p. 286, 1878; Ann. Soc. Ent. France, (6) i, p. 802, 1881; Hubenthal, Arch.

Naturg., 83, A. 9, p. 56, 1919.

A. kraatzi, Hubenthal, op. cit., p. 54 (n. syn.).

Upolu: Malololelei, 1 3, 2 99, 11, vii.1924.

There is in the British Museum a cotype female of A. beconifera, from Fiji,

and through the kindness of Dr. Walther Horn I have been able to compare it

with a female of A. kraatzi named by Hubenthal; they are undoubtedly con-

specific.

16. Acicnemis eludens, sp. n.

62. Derm piceous, with dense, mottled, greyish-brown scaling above ; the

prothorax with very indefinite, paler markings, including a transverse row of

four rounded patches across the middle and two short, lateral stripes on each side

of the base ; the elytra with the following markings on interval 1 : a dark brown,

post-scutellar patch about as long as the scutellum, followed by a whitish stripe

1 mm. long, then a mottled brown and buff patch 0-6 mm. long ; immediately

behind this a common, transverse, buff band uniting the tubercles on interval 3,

and a very faint, common, V-shaped mark on the declivity ; the underside grey.

Rostrum as in A. variegata. Antennae with joint 2 of the funicle 1-7 times

as long as 2, 3 and 4 longer than broad, 5-7 about as long as broad ; the club not

stalked, elliptical in 9, narrower and almost cylindrical in 3. Prothorax trans-

verse, rounded at the sides, widest at about the middle, narrowly constricted at

the base and with the angles projecting slightly, strongly constricted and sub-

CURCULIONIDAE. 273

tubular at the apex; the dorsum evenly convex and without depressions or

granules in either sex ; the setae very small, quite recumbent and inconspicuous.

Scutellum with coffee-brown scaling. Hlytra much wider than the prothorax,

slightly narrower in g than in 9, widest at the shoulders and gradually narrowing

behind, with the lateral margins sinuate just before the apex, which is sub-truncate

in both sexes and somewhat produced downwards like a beak in 2; the striae

usually rendered rather indistinct by the dense scaling and the punctures normally

invisible ; the usual posterior callus well developed, the intervals all similar,

except for a low tubercle behind the middle on interval 3 (less distinct in J) and

another close to the apex ; the scaling overlapping, smooth ; the setae small and

quite recumbent. Legs with the hind femora not exceeding the apex of the elytra ;

all the femora slender at the base, more strongly clavate than in A. variegata,

with a smaller and sharper tooth, the distal edge of which slopes less steeply

and does not form a sharp knife-edge, but merely a low, uneven carina; the

tibiae narrowing from the middle to the apex and without a sharp, projecting

tooth at the inner apical angle, the front tibiae of J with a thin fringe of long

hairs on the apical half of the lower edge. Venter of § with a large median

impression on the two basal ventrites, and another on the anal ventrite devoid

of scaling and set with dense, long, erect setae.

Length: 5-1-5:-4 mm.; breadth, 2:1-2:3 mm.

Tutuila: Pago Pago, 1 3, under rotten bark, 21.1x.1923 (Swezey), 1 9,

2.xi1.1924 (Buxton and Hopkins—type) ; Amauli, 1 9, 6.1x.1923 (Swezey and

Wilder).

The g cotype has the general colouring somewhat darker above and the

markings almost obliterated, even the white patch on the elytra being shortened

and indistinct. The Tutuila specimen is darker still, and the pale buff markings

on the pronotum stand out conspicuously, the basal lateral stripes uniting with

the discal spots, and there is an additional pale median stripe; on the dark

brown elytra the whitish sutural patch has practically disappeared, the trans-

verse buff band is broken into three spots, and there is an elongate buff patch

on interval 6 behind the middle.

From the other two Samoan Acicnemis this species may be distinguished,

unter alia, by the much more slender antennal club, the evenly convex and uni-

formly scaled pronotum, the complete absence of granules on the pronotum and

elytra, the concealment of the punctures on the elytra, and the absence of the

sharp, internal, apical tooth on the tibiae.

274 INSECTS OF SAMOA.

In Hubenthal’s key to the genus (op. cit.) A. eludens runs down to sanno,

Pasc. 1872, a New Guinea species, which is a much larger insect with a very

different colour pattern ; it also differs, inter alia, in having the distal joints of

the funicle much longer than broad and clavate, and the club shortly pedunculate ;

on the pronotum the coarse punctures on the disk are visible, each containing

a broad scale ; on the elytra the striae are distinct, and there is no trace of a

tubercle on interval 3; the tooth on the femora is very large, with a knife-lke

distal edge.

16a. Acicnemis eludens, var. signifera, nov.

A single female taken at Malololelei, Upolu, 18.1v.1925, differs strikingly in

colour from the Tutuila specimens, but no structural differences can be detected.

Head fawn-coloured, with a dark brown, V-shaped mark. Pronotum fawn,

with a large, transverse, oblong patch of mottled fawn and brown scales at the

base, a few scattered brown scales in front of it, and an oblique, lateral, brown

stripe on each side of the anterior half. Elytra mottled grey and brown above,

with a dark brown sutural patch from the base to the tubercles, not extending

laterally beyond stria 2 except on the tubercles, and containing in its middle a

conspicuous, whitish, oblong, sutural patch confined to interval 1; the lateral

margins below stria 7 dark chocolate-brown, with sparse, white, recumbent setae,

the brown colour encroaching irregularly on the disk before the middle. Under-

side dark chocolate-brown, with sparse, whitish scales and a bilateral patch of

fawn scaling on the two basal ventrites.

JTHYPORINAE.

Cranopoeus, gen. nov.

Head globular, immersed in the prothorax; eyes lateral, short, oval,

separated above by the width of the rostrum and even further apart beneath,

and partly covered by the post-ocular lobes when the rostrum is retracted.

Rostrum almost straight, slender, very elongate, with the antennae inserted at

about one-third from the apex in f and at about middle in 9 ; the scrobes passing

rapidly to the lower surface, but not uniting at base and not continued beyond

the antennae; mandibles strongly dentate and decussate. Antennae slender,

elongate ; scape about as long as the funicle and club ; funicle 7-jointed and with

CURCULIONIDAE. 275

joint 1 much longer than 2; club 4-jointed, the sutures transverse. Prothorax

transverse, almost concealing the head from above, with feeble, post-ocular lobes

bearing short vibrissae. Scewtellum minute or concealed. Elytra very short and

broad, much broader at the shoulders than the prothorax, with ten deeply

punctate striae (the 10th abbreviated), and without any posterior calli. Wangs

functional. Sternum: prosternum broadly and shallowly excavated in front

of the contiguous coxae, and with its apical margin deeply sinuate ; mesosternal

process sloping forwards, plane, and broadly rounded behind; mesepimeron

much smaller than the mesepisternum; metasternum much shorter between

the coxae than the median coxa ; metepisternum moderately broad and reaching

the venter, the adjoining suture either complete or partly obliterated. Venter

with the intercoxal process broadly rounded ; ventrite 1 truncate behind, 2-4

sub-equal and with deep, straight sutures ; pygidium entirely concealed. Legs

with the femora clavate and unarmed, the hind pair not exceeding the elytra ;

tibiae compressed, finely uncinate at the apex; tarsi with joint 3 longer than 2

and deeply bilobed, the claws small, connate at the base and strongly bent

inwards.

Genotype, Cranopoeus turritus, sp. 0.

The pronotum and elytra normally bear striking prominences formed from

a waxy secretion.

In general facies very much like one of the small, sub-quadrate species of

Conotrachelus, which, however, differ principally in their strongly developed

post-ocular lobes, the inferiorly approximate eyes, the toothed femora, and the

appendiculate or toothed, divergent tarsal claws.

I have seen other undescribed species from the Marquesas Is. and Fiji.

17. Cranopoeus turritus, sp. n. (Text-figs. 8, 9).

6. Integument piceous brown, rostrum and antennae red-brown, and legs

testaceous brown; rostrum, head and pronotum covered with a brown to

fulvous waxy secretion, which is usually paler on the head and which is

developed into a high vertical prominence in the middle of the pronotum ; elytra

with a broad band of fulvous secretion across the base and over the whole of

the declivity, but the basal band sometimes interrupted on the suture, the median

area being dark brown with variable patches of fulvous secretion, and with a

276 INSECTS OF SAMOA.

large erect waxy prominence on the disk of each elytron ; legs with dense, pale,

fulvous secretion.

Head smooth and impunctate, with a distinct median fovea, but the whole

surface hidden by secretion ; two long, erect setae adjoining each eye. Rostrum

elongate, cylindrical in the basal half and dorso-ventrally compressed towards

the apex, with close, rather rugose, longitudinally confluent punctures, a distinct

low median carina in the basal half, and a shallow elongate median fovea between

‘TERZIWD

Text-Fic. 8.—Cranopoeus turritus, sp. D., 3.

the antennae; the whole surface behind the antennae normally hidden by

secretion and with scattered, short, erect, pale setae. Antennae with the scape

gradually clavate ; funicle with joint 1 as long as 2+3, 2 longer than 3, and 3

than 4, all being longer than broad, 5-7 as long as broad and moniliform.

Prothorax transverse (11: 8), widest at the base, gradually narrowing to beyond

the middle, and there abruptly and very deeply constricted, the constriction

being continued across the dorsum but interrupted in the middle by a carina

that bears the anterior flange of the discal waxy process; the base deeply

bisinuate, the apex arcuate dorsally and somewhat oblique laterally ; dorsum

CURCULIONIDAE. 277

strongly convex longitudinally, the apex being well below tne level of the base,

shiny and impunctate when denuded, clothed with recumbent setiform scales

that are pale in the middle and at the sides and dark in between; normally

these scales are hidden by secretion, and in the middle of the disk arises a high

sub-pyramidal wax process having four flanges, of which the longitudinal are

longer than the transverse, and on each side (just behind the constriction) a

small sub-conical wax process ; a row of 8 stout erect setae across the apical

margin and a few others about the middle of the disk. lytra only a little longer

than broad, jointly trisinuate at the

base, with the shoulders obtusely

prominent laterally, parallel-sided

from behind the shoulders to beyond

the middle, and then rapidly

narrowed to the apices, which are

jointly and broadly rounded; the

dorsal outline almost flat from the

base only to the middle and then

sloping very steeply to the apex ;

the striae deep and_ strongly

punctate, but normally concealed

by secretion, and intervals 3 and 5

a little higher than the others ; on !

each elytron at the middle an erect Text-Fic. 9.—Cranopoeus turritus, lateral view.

waxy process with four flanges, like

that on the pronotum, the longitudinal flanges being on interval 3, the inner lateral

one reaching only to interval 2, and the outer one to 5 ; two small wax tubercles

on interval 4, one before and the other behind the middle, but the former usually

lacking ; a few scattered, short, erect, white setae, especially towards the apex.

Legs normally covered with dense secretion and with numerous stout, erect,

sharp, white setae ; tibiae sub-compressed, stout and straight ; tarsi rather short

and broad, joint 2 strongly transverse.

Length: 2-1-3 mm.; breadth, 1-2-2-1 mm.

Upolu: Malololelei, 2,000 ft., 7 jg, 22.x1.1924.

278 INSECTS OF SAMOA.

Spanochelus, gen. nov.

Closely allied to the preceding genus, Cranopoeus, and differing principally

in the following particulars :-—

Antennae inserted at one-third from the apex of the rostrum in both sexes,

the scape shorter than the funicle and club together. Front coxae extremely

narrowly separated ; mesosternal process very short and vertical, the space

between the median coxae being as broad as a coxa (half the width in Cranopoeus) ;

metasternum between the coxae as long as the median coxa. Tarsi with only a

single claw ; joint 4 very short and not exceeding the apical setae on joint 3.

Genotype, Spanochelus planirostris, sp. 0.

The genotype also presents remarkable peculiarities in the form of the

rostrum and of the anal ventrite in the female.

18. Spanochelus planirostris, sp. n. (Text-fig. 10).

$9. Derm red-brown; prothorax with the following markings formed of

greyish or yellowish setiform scaling, more or less covered with a waxy secretion ;

a median stripe from the base (where it extends somewhat laterally) to the sub-

apical constriction, a broad lateral stripe, a transverse band in the sub-apical

constriction, a dense fringe along the whole apical margin and continued along

the lower and basal margins of the prosternum (all liable to be more or less

abraded) ; elytra with indefinite macular stripes of small pale scales on intervals

3, 5, 7 and the apical half of 1, and with a short transverse band across the

summit of the declivity extending to interval 3 on each side ; all the margins of

the meso- and metasternum with fringes of ceriferous setae.

Head with very fine sparse punctures and setiform scales, the scales becoming

denser and coarser anteriorly ; frons as wide as the base of the rostrum, flattened

or shallowly impressed, and with a small median fovea. Rostrum of ° a little

longer than a front femur, very broad and entirely flat dorsally, shallowly con-

stricted at the base, widest at about one-fifth, then gradually narrowing to near

the apex and there roundly dilated ; the dorsum strigulose, with dense, longi-

tudinally confluent punctures, the lateral margins widely overhanging the recessed

and deeply impressed lateral areas ; rostrum of j normally convex, not constricted

at the base, gently narrowing to beyond the middle and then gradually widening

CURCULIONIDAE. 279

to the apex, the dorsum with close confluent punctures but not strigulose ; the

lateral areas vertical (not impressed) and strigulose. Antennae with the scape

slender and clavate; funicle with joint 1 as long as 2+3, 3-5 sub-equal and as

long as or slightly longer than broad, 6 and 7 slightly transverse. Prothorax

trapezoidal, somewhat broader than long, widest at the base, which is distinctly

bisinuate, strongly narrowed to the apex; which is gently arcuate, only slightly

Text-Fic. 10.—Spanochelus planirostris, sp. n., 3; a, lateral view of head.

rounded at the sides, and with a shallow sub-apical constriction, which is continued

broadly across the dorsum; dorsum gently convex longitudinally, highest at

the middle, with the dark areas on each side of the pale median stripe almost

bare and shiny, elsewhere with rather sparse brown setiform scaling. Scutellum

very small, elongate, bare. Hlytra sub-quadrate (9: 8), gently trisinuate at the

base, not very much broader at the roundly prominent shoulders than the base

280 INSECTS OF SAMOA.

of the prothorax, subparallel-sided to beyond the middle, broadly rounded

behind (viewed directly from above), the posterior declivity being almost per-

pendicular and very deep, and the dorsum flat longitudinally from the base to

three-fourths ; the striae strongly and closely punctate; the intervals not or

but little broader than the striae, gently convex, the alternate ones being slightly

more raised in the posterior half, with the scales minute and ovate, and without

perceptible setae. Legs comparatively short and stout, red-brown, with sparse

elongate scales; the femora apparently having normally a dorsal and ventral

ceriferous fringe, which is often abraded; the tibiae in the apical half with a

dense dorsal fringe, the setae in which become rapidly longer distally and are

matted with secretion, so that superficially the tibiae appear to be dilated api-

cally ; the tarsi broad, joint 2 nearly twice as broad as long. Venter of 2 with

the lateral and apical margins of the anal ventrite carinately elevated and deeply

bi-emarginate at the apex ; anal ventrite of J normal.

Length : 1-6-2:0 mm. ; breadth, 1-0-1-1 mm.

Upolu: Malololelei, 2,000 ft., 2 3g, 5 99, 22 and 30.x1.1924.

CRYPTORRHYNCHINAE.

19. Anaballus amplicollis, Fairmaire.

Rev. Zool., (2) i, pp. 36, 514, 1849.

Upolu: Apia, 1 9, 23.v.1924.

The species occurs also in Fiji, Tahiti (type locality), and New Caledonia.

20. Elytroteinus subtruncatus, Fairmaire.

Pteroporus subtruncatus, Fairmaire, Ann. Soc. Ent. France, (6) 1, p. 807, 1881.

Elytroteinus subtruncatus, Fairm., Marshall, Bull. Ent. Res., xi, p. 276, pl. vii, fig. 8, 1920.

Upolu: Apia, 1 g, xi.1912, 1 J, 1 9, in rotten coconut palm, 1.1913 (K.

Friederichs) ; Puipaa, 1 9, in dead tree stump (Friederichs).

Originally described from Fiji, and recently found in Honolulu attacking

the roots of ginger (Hedychium coronarvum).

21. Acalles samoanus, sp. n.

39. Derm black, with dense dark brown scaling variegated with yellowish

patches ; pronotum with a broad longitudinal pale patch of varying length on

CURCULIONIDAE. 281

each side of the base opposite interval 5 on the elytra; elytra with indefinite

irregular variable pale patches.

Head with the coarse punctation concealed by brown scaling ; the forehead

gently convex, as broad as the base of the rostrum, with a few sub-erect squami-

form pale setae on each side ; the eyes flat. Rostrum gradually narrowing from

the base to the antennae and then widening again to the apex, which is as broad

as the base ; in g, with four rows of coarse sub-reticulate punctures on the basal

portion, which become confused on the apical area; in 9, the apical half with

much smaller separated punctures on the disk. Antennae red-brown ; joint 2

of the funicle a little longer than 1, 3 longer than broad, 4-6 about as long as

broad, 7 transverse. Prothorax slightly broader than long (6:5), strongly

rounded at the sides, widest behind the middle, shallowly constricted near the

apex, and subtruncate at the base ; the dorsum gently convex longitudinally,

sloping anteriorly, set throughout with coarse reticulate punctures (normally

hidden by scaling) and with small shiny granules here and there on the intervals ;

the punctures each with a short, erect, spatulate, brown seta. Scutellum invisible.

Elytra broadly ovate, widest before the middle, feebly arcuate jointly at the base,

with the basal angles projecting slightly beyond those of the prothorax, and

broadly rounded at the apex; the nine deep striae containing deep rounded

punctures, the septa between which are almost or quite as wide as the intervals ;

the latter not wider than the striae, and each with a row of rounded granules

alternating with very short sub-erect spatulate setae, the granules on interval 1

extending only from the base to near the middle, those on the inflexed margins

much larger and obtuse ; a granular callus at the apex of intervals 3 and 9. Legs

black, with the tibiae and tarsi red-brown, sparsely set with recumbent spatulate

pale setae ; the femora with coarse, shallow punctation ; the tibiae with a fine

dorsal carina, and a very small tooth at the inner apical angle. Venter with

the intercoxal process broadly arcuate ; ventrites 1 and 2 fused in the middle

and on a higher level than the apical ones, set with coarse separated punctures

containing short recumbent setae and without scaling; 1 shorter than 2+3+4,

2 much longer than 3+4, the latter costiform, bare and impunctate.

Length: 2-7-3-5 mm.; breadth, 1-4-1-8 mm.

Upolu: Apia, 1 9, x1.1924 (type) ; Aleipata, 1 3,1 9, 1v.1924.

IV.

282 INSECTS OF SAMOA.

22. Microcryptorrhynchus analis, sp. n. (Text-fig. 11, c).

o¢. Derm black; the apex of the rostrum, the antennae and tarsi red-

brown, the anal ventrite yellow-brown ; the upper surface closely covered with

an amorphous earth-brown incrustation and apparently without true scales.

Head with dense incrustation and a few very short erect squamiform setae.

Rostrum narrowly tricarinate, the median carina more distinct ; the basal half

encrusted and with some very short erect clavate setae, the bare apical half

with four rows of confluent punctures. Prothorax longer than broad (11 : 9),

moderately rounded at the sides, widest at the middle, shallowly constricted

near the apex, the constriction broadly and shallowly continued across the dor-

sum; the postocular lobes prominent ; the dorsum longitudinally convex and

set with coarse sub-reticulate punctures (concealed), the interspaces being equally

narrow on the pleurae ; the short, erect, clavate setae rather sparse on the disk

and forming a single projecting row along the apical margin. Llytra ovate,

widest at about the middle, obtusely acuminate at the apex, and truncate at

the base; the shallow striae with regular deep sub-quadrate punctures (con-

cealed), which diminish behind and are largest in striae 5 and 6; the intervals

narrower than the striae, the alternate ones bearing a widely spaced row of long,

erect, compressed setae ; the dorsal outline forming a very flat curve, the posterior

CURCULIONIDAE. 283

declivity steep. Legs encrusted and with rather sparse, long, erect setae. Under-

side: the overhanging part of the mesosternal cavity short and with a broad

U-shaped sinuation ; ventrite 2 much longer than 3+4, the latter costiform

and impunctate.

Length : 1-6-1-7 mm. ; breadth, 0-7 mm.

Upolu: Malololelei, 2,000 ft., 6 dg, 6 99, vi. and x1.1924.

Closely allied to M. vitiensis, Lea 1928, from Fiji, which differs principally

in its much more convex elytra, much paler antennae and tarsi, and in the

absence of the fine median carina on the rostrum.

23. Microcryptorrhynchus subscutellatus, sp. n. (Text-fig. 11, 6).

3?. Derm black, rather thinly clothed with grey scales, which are more

or less covered with a brownish incrustation, especially on the dorsum; a

median stripe on the pronotum and the scutellar area on the elytra usually grey.

Head with dense scaling, which is brownish on the vertex and grey in front.

Rostrum of 3 rather densely squamose throughout, with a narrow median carina

showing through, and on each side in the basal half a dense row of erect scales,

otherwise all the scales lying transversely except close to the base; 9 with the

apical half devoid of scales, with a broader, median, smooth stripe and strongly

punctate at the sides. Prothorax a little longer than broad, strongly rounded

at the sides, widest at the middle, shallowly constricted near the apex, the

constriction broadly, but very shallowly, continued across the dorsum; the

post-ocular lobes prominent; the dorsum convex longitudinally behind the

constriction, with close, sub-reticulate punctures (concealed) throughout, the

interspaces becoming wider on the pleurae ; each puncture covered by a rather

narrow, recumbent scale, the interspaces showing through here and there like

flattened, shiny granules ; the short, erect, clavate setae more numerous in the

middle of the disk and on the apical area. Hlytra narrowly ovate, widest at

one-third from the base, and rather broadly rounded behind ; a deep, triangular

cavity in the scutellar area, in which the apex of the steeply immersed scutellum

can be seen, and a well-marked sinuation on the basal margin at the base of

striae 5 and 6; the striae narrow and rather shallow, containing close, small

punctures, but on the humeral area the punctures much larger and sub-reticulate

(usually concealed) ; the intervals much broader than the striae, the alternate

ones bearing a row of stout, erect, pale setae, which are short and closely set near

284 INSECTS OF SAMOA.

the base (especially on interval 3) and much longer and widely spaced behind ;

the scales, when visible, very small and fairly dense; the dorsal outline rising

from the base to before the middle, then sloping regularly to the apex. Legs

with rather dense, small scales and with erect setae, which are much longer on

the dorsal edge of the femora. Underside: the overhanging part of the meso-

sternal cavity comparatively long and with a sub-rectangular sinuation ; ventrite

2 about as long as 3+-4, the latter flat and sparsely squamose.

Length : 1-8-2-0 mm. ; breadth, 0-7-0-8 mm.

Upolu: Malololelei, 2 3g, 2 29, vii.1924.

The scutellar cavity and the sinuation in the base of the elytra will dis-

tinguish this species from any of those that have been previously described.

24. Microcryptorrhynchus glomus, sp. n. (Text-fig. 11, a).

9g. Derm black, covered with a dense, amorphous, earth-brown incrusta-

tion above and below, but with a band of true scaling along the basal margin

of the pronotum, and set with short, stout, erect, compressed setae.

Head with rugose, confluent punctation (concealed), and very short, erect

squamiform setae. Rostrum tricarinate and with four rows of erect, squamiform

setae, the sulci being filled with scaling. Prothorax transverse, rounded at the

sides, widest behind the middle, strongly constricted near the apex, the con-

striction continued deeply and broadly across the dorsum ; the post-ocular lobes

not very prominent ; the dorsum longitudinally convex behind the constriction,

set throughout with deep, sub-hexagonal, reticulated punctures (concealed) ; the

setae stout, erect and clavate, shorter and denser along the apical margin and

absent from the transverse furrow. Hlytra sub-rotund, only a little longer than

broad (9 : 8), jointly sinuate at the base, widest at the middle, and broadly rounded

behind ; the punctures (concealed) large and sub-quadrate, the intervals between

the rows very narrow, and but little wider than the septa between the punctures ;

the dorsal outline gently convex, highest at about the middle, the posterior

declivity steep and almost perpendicular near the apex; the setae in regular

rows along the alternate intervals. Legs with true scaling, the incrustation being

confined to the dorsal edge of the femora, the setae stout and erect. Underside :

the overhanging part of the mesosternal cavity short and with a U-shaped

emargination ; ventrite 2 much longer than 3+-4, the latter costiform and bare.

Length: 1-7-2:0 mm.; breadth, 1-:0-1-2 mm.

CURCULIONIDAE. 285

Upolu: Malololelei, 3 99, vi-vu.1924 (type).

Tutuila: Pago Pago, 2 99, ix.1923 (Swezey and Wilder), 1 g, 18.1x.1924

(Bryan).

Phanerostethus, gen. nov.

Head convex, not entirely concealed by the pronotum, with the forehead

narrower. than the base of the rostrum. Rostrum much compressed dorso-

ventrally, with the antennae inserted at or behind the middle. Antennae with

the scape much shorter than the funicle, gradually clavate; the funicle with

the two basal joints elongate; the club ovate, 4-jointed, the first joint as long

as the rest. Prothorax pulvinate, rather strongly compressed laterally at the

base, and with feeble, post-ocular lobes. Scwtellwm small, but distinct. LHlytra

sub-truncate at the base, and there not wider than the base of the prothorax,

without humeral calli, and with the tenth stria abbreviated. Wings not func-

tional. Legs comparatively slender and elongate ; the femora only moderately

clavate and edentate, the hind pair reaching the apex of the elytra; the tibiae

sub-cylindrical, quite straight, with an almost longitudinal uncus and no tooth

at the inner apical angle; the tarsi with joint 2 not transverse, the claws stout

and divaricate. Sternum with the pectoral furrow squamose (except between

the front coxae) and the mesosternal cavity quite open; the metasternum

between the mid and hind coxae half the length of a coxa, the metepisternal

suture invisible. Venter with the intercoxal process broadly arcuate, as wide

as a coxa; ventrite 1 about as long as 2+3+-4, separated from 2 by a distinct,

curved suture, 2 as long as 3+4.

Genotype, Phanerostethus dilophus, sp. un.

Most nearly allied to the Australian Pteroporopterus, Lea 1912, which,

however, differs in the following characters: the antennae are inserted beyond

the middle of the rostrum ; the mesosternal receptacle is bare and raised above

the level of the metasternum, with its posterior margin overhanging ; stria 10

on the elytra is complete; the intercoxal process of the venter is ogival and

much narrower than a coxa; the femora bear a small tooth*; and the tarsal

claws are not divaricate.

* Mr. Lea describes the femora as edentate, but I have before me a specimen of the geno-

type, P. lacunosus, Lea, named by the author, in which they are certainly dentate, though the

tooth is small and almost hidden by dense scaling.

286 INSECTS OF SAMOA.

25. Phanerostethus dilophus, sp. n. (Text-fig. 12).

32. Derm black, with dense brown scaling, which appears to be partly

amorphous, variegated with paler and darker markings; the pronotum with

two admedian whitish spots on the disk, each sometimes surrounded by an

indefinite, blackish ring, and an ill-defined, yellowish or tawny patch in the middle

of the base; the elytra with an elongate, tawny patch (sometimes indistinct)

starting at the two juxta-sutural tufts at the top of the declivity and widening

to the apex, being bounded externally by stria 3; the disk of the elytra with

very indefinite and variable, darker mottling, and a rounded whitish spot at the

middle on interval 8 and a contiguous one just behind it on interval 7; the

underside with fairly dense, pale grey scaling, but denser, pale buff Scala on

the metasternum and mesosternal receptacle.

Text-ric. 12.—Phanerostethus dilophus, sp. n., 3, lateral view.

Head with dense brown scaling and short, sub-recumbent squamiform setae.

Rostrum of 3 with dense grey or yellowishscalingin the basal half, with an elongate,

darker, median patch and with traces of three fine, sinuous, median carinae, the

apical half with fine, dense, elongate, sub-confluent punctures ; 2 with a smaller

squamose area at the base and no trace of the carinae, the punctures on the distal

part extremely fine, separated and not elongate. Antennae with joint 1 of the

funicle longer and stouter than 2, as long as 2+3, 3-6 as long as or a little longer

than broad, 7 a little wider and transverse. Prothorax as long as broad, strongly

rounded at the sides, widest at about the middle, the sides being almost straight

for some distance from the base, more rapidly narrowed in front, and shallowly

constricted near the apex ; the base feebly bisinuate and the angles sub-rectangu-

lar; the dorsum strongly convex longitudinally, rising very steeply from the base

CURCULIONIDAE. 287

and highest at about one-third, the apical area being somewhat depressed ; the

sculpture consisting of fairly large, separated, oval punctures, but entirely hidden

by the matted scaling; the numerous setae short, stiff, and erect, pointed

in g and much shorter and clavate in 2. Sceutellum punctiform, with dense,

yellowish scales. Elytra elongate-ovate in 3, widest at about one-fourth from the

base, broadly rounded or even sub-truncate atthe apex, without any sub-apical

callus, the dorsal outlme almost flat from the base to beyond the middle, the

declivity having a slope of about 45°; in 9 shorter and broader, widest at the

middle, the dorsal outline convex, and the declivity steeper ; the striae somewhat

irregular and containing very large, closely set punctures (partly hidden by

scaling) ; the intervals not broader than the punctures, 3, 5 and 7 bemg more

raised than the others and bearing small, distant, shiny granules (especially in 3),

3 being widened at the top of the declivity and with an elevation bearing a tuft

of erect, yellowish scales ; all the intervals with a row of small, stout, sub-erect,

pale setae, which are pointed in 3 and more scale-like in 9. Legs with dense

scaling and short, stout, sub-recumbent, white setae; the femora grey at the

base, dark brown in the middle, and paler brown at the apex; the tibiae dark

brown, with the apical third and a band near the base grey or pale brown.

Length: § 3-5, 2 2:6-3-25 mm.; breadth, J 1-4, 2 1-2-1-4 mm.

Upolu: Malololelei, 2,000 ft., 2 3g, 3 Q, iv, vi, xi, x11.1924.

26. Deretiosus scutiger, sp. n.

9. Derm testaceous brown, hidden by dense scaling; head and pronotum

greyish buff, base of rostrum and sides of prothorax brown; scutellum white ;

elytra pale greyish brown, with the extreme base of interval 2 blackish brown and

a curved, dark brown stripe on the basal fifth of interval 3; a rather indefinite,

brown, common shield-shaped patch about the middle, with its apex posteriorly

on the suture at about two-thirds of the length, its base at about one-third,

sinuate and extending on each side to stria 4; the declivity with a very indefinite,

broad, transverse, darker band, and the whole disk with numerous scattered,

small, round pustules formed of erect, light or dark brown scales; the lower

surface greyish white in the middle, turning to light brown at the sides and on

the last three ventrites.

Head with the dense scales erect and curled, producing a sponge-like appear-

288 INSECTS OF SAMOA.

ance, and with numerous short, stout, erect setae, which are only slightly longer

than the scales; the frons broadly and shallowly impressed. Rostrum rather

slender, gradually narrowed from the base to the antennae, which are inserted

at the middle, and subparallel-sided thence to the apex ; the basal half densely

squamose, and with sparse, short, erect setae ; the apical half bare and with close

separated punctures. Antennae testaceous brown; the funicle with joimt 2 a

little longer than 1. Prothorax transverse (13:11), almost parallel-sided from

the base to the middle, then roundly narrowing, and broadly constricted and

sub-tubulate at the apex; the post-ocular lobes rather feeble; the dorsum

higher on the basal than on the apical half, with a group of very short, erect

setae on each side of the apex and a transverse row of four low fascicles about

the middle, the median pair being less prominent; the general scaling flat,

except in the fascicles, where it is erect and sponge-like. Elytra oblong-ovate,

almost truncate at the base, subparallel-sided from the roundly rectangular

shoulders to beyond the middle, and obtusely acuminate at the apex ; the striae

distinct and more or less sinuous, the punctures being almost entirely concealed

by the scaling ; interval 3 with a broad, elongate elevation near the base, and a

lower, narrower one on the base of 5; all the intervals with small, round pustules,

formed of erect scales round a short, thick seta, those on intervals 1, 3, 5, 7

slightly larger than the others. Legs with fawn-coloured scaling and scattered,

short, stout, sub-erect, pale setae ; femora with two indefinite, darker bands, and

the posterior pairs with their posterior and lower surfaces whitish, the femoral

tooth small but sharp ; tibiae somewhat darker on the basal half, the front pair

almost straight on the lower edge and shallowly sinuate on the dorsal edge.

Length : 4-8 mm. ; breadth, 2:3 mm.

Upolu: Malololelei, 1 9, 25.1v.1924.

Apparently the nearest ally of this species is, judging from the description

only, D. lectus, Lea 1928, from Fiji, which is, however, a larger insect (6 mm.) ;

moreover, the prothorax has dark setae near the apex, and the median fascicles

are blackish; the elytra lack the shield-shaped patch, there is an additional

smaller fascicle on interval 3, and the even-numbered intervals have no pustules

except on the declivity.

CURCULIONIDAE. 289

27. Deretiosus gibber, sp. n. (Text-fig. 13).

9. Derm piceous, hidden by dense brown scaling ; elytra with a common,

blackish-brown, V-shaped marking, having its apex on the suture at the top of

the declivity and its arms extending forwards to one-fourth from the base on

interval 5, and with a very indefinite, broad, transverse, paler band across the

Text-Fic. 13.—Deretiosus gibber, sp. n., &.

declivity ; the lower surface with grey scaling, turning to brownish laterally '

on the sternum.

Head with recumbent, concave scales and with extremely short, sparse, erect,

scale-like setae ; the frons somewhat flattened but not impressed. Rostrum rather

slender, somewhat narrowed from the base to the antennae, which are inserted

beyond the middle, and thence gradually widening to the apex ; squamose and

with rugose, confluent punctation on the basal third, elsewhere rather sparsely

punctate, the punctures mostly forming two irregular dorsal rows. Antennae

290 INSECTS OF SAMOA.

testaceous brown; the funicle with joint 2 slightly longer than 1. Prothorax

transverse (11 : 8), widest at the base, gradually narrowing with a curve anteriorly,

and with the apical portion broadly, but not very abruptly, constricted beyond

the middle ; the dorsum rather higher in the basal than in the apical half, with a

large cluster of short, erect, brown setae on each side at the apex and a transverse

row of four equal brown fascicles at about the middle ; the scales concave and

producing a honeycomb appearance. Scutellwm rounded, with brown scaling.

Elytra oblong-ovate, very feebly trisinuate at the base, parallel-sided from the

roundly rectangular shoulders to two-thirds, and broadly rounded at the apex ;

the striae distinct and regular laterally, but the first 4 indistinct and sinuous,

and the punctures in all of them concealed by the scaling; interval 3 with a

medium-sized, rounded fascicle near the base and a very large, elongate one ending

at a little beyond the middle, between these a small fascicle on interval 5, a trans-

verse row of larger pustules across the declivity on intervals 3, 5, 7, and several

smaller ones along 5 and 7, there being none on the alternate intervals. Legs

with uniform brown scaling and sparse, short, erect, pale setae ; the femora with

a small sharp tooth ; the front tibiae straight on the upper and lower edges.

Length: 3-6 mm.; breadth, 1-8 mm.

Upolu: Tuaefu, 1 9, 16.1x.1923 (Swezey and Wilder).

Type in the Bishop Museum, Honolulu.

Distinguished by the linear arrangement of the punctures on the rostrum,

the V-shaped dark mark on the elytra, and the very large median fasciculate

elevation on interval 3.

28. Deretiosus wilderi, sp. n.

§. Derm red-brown, hidden above and below with dense isabelline grey

scaling, except on the apical two-fifths of the rostrum, which is bare ; pronotum

with the setae in the two apical and the two median fascicles blackish, and a

very irregular, macular, median stripe of brown scales ; elytra with a short, basal,

brown stripe on interval 3, a small blackish-brown spot just before the middle

on intervals 8 and 9, and some brown scales round the sub-median fascicle on

interval 3 (type). In a second specimen (damaged) the whole disk of the pro-

notum is dark brown, and the general colour of the elytra is darker than in the

type, there being a common, pale, V-shaped marking behind the middle which

is sharply defined on its anterior edge and indefinite behind.

CURCULIONIDAE. 291

Head with dense hollowed scales and scattered, minute, dark setae that are

but little higher than the scales; frons shallowly impressed transversely, with

a distinct, small, median puncture and a group of longer, erect setae on each side

next the eye. Rostrum almost parallel-sided, with the antennae inserted at

one-third from the apex ; the basal area quite even, and with dense, concave

scaling and very short, erect setae ; the bare apical area with very dense, small,

sub-confluent punctures. Antennae testaceous brown; scape with a distinct

apical fringe of setae ; funicle with joint 2 definitely longer than 1, joints 4-7

stout, bead-like and slightly broader than long. Prothorax transverse (5: 4),

parallel-sided from the base to a little beyond the middle, then rapidly narrowing

anteriorly (the sides forming an obtuse angle), and with a broad, shallow, apical

constriction ; the post-ocular lobes strongly developed ; the dorsum higher in

the basal half than in front, with a definite fascicle of peg-like setae on each side

of the apex and a curved, transverse row of four fascicles near the middle, the

inner pair being behind the outer and much less prominent, and the outer pair

not situated at the lateral angulations but inside them; the scales comparatively

very large (4 or 5 times the size of those on the elytra), recumbent and deeply

concave, those on the post-ocular lobes being larger still and quite flat. Hlytra

oblong-ovate, sub-truncate at the base, slightly widening behind the roundly

rectangular shoulders and broadly rounded at the apex; the striae compara-

tively straight, the punctures showing distinctly through the scaling, but very

small, each containing a small scale-like seta ; interval 3 with a small fascicle

at one-fifth from the base, a longer but not very large one near the middle, and

a row of 4 or 5 small pustules behind it ; interval 5 with a pustule at one-sixth

from the base, one or two before the middle, two behind it, and an elongate

fascicle on the posterior callus ; interval 7 with a few scattered, indefinite pustules,

and a row of minute ones on the apical half of interval 1 ; the even-numbered

intervals without pustules. Legs with sandy or fawn scaling and two indefinite,

variable dark patches on each of the femora and tibiae ; the femoral tooth rather

large and sharp ; the tibiae strongly arcuate dorsally in the basal half.

Length: 6-0-6-5 mm.; breadth, 3-1-3-4 mm.

Tutuila: Pago Pago, 2 gg, under rotten bark, 21.1x.1923 (Swezey and

Wilder).

Type in the Bishop Museum, Honolulu.

This species differs from the two preceding ones inter alia in its larger size,

densely punctate rostrum, the curved row of fascicles on the pronotum and

292 INSECTS OF SAMOA.

the situation of the outer ones inside the lateral angulation, the very large scales

on the pronotum and especially those on the more prominent post-ocular lobes,

the arcuate tibiae, etc.

- From the description, it appears to be nearly related to D. lectus, Lea 1928,

from Fiji, which, however, has the prothorax sub-conical ; on interval 3 the basal

fascicle is larger than the median one ; and there are pustules posteriorly on the

even-numbered intervals.

Deretiodes, gen. nov.

Closely allied to Deretiosus, Pasc. 1871, and especially in the complete

absence of the usual mesosternal receptacle, the sternal furrow terminating

instead in a slightly over-arched cavity in the metasternum ; but differing from

that genus in the following characters :—

Funicle of the antennae with 6 joints only, the 7th being entirely fused

with the club; femora without any tooth, the tibiae not sinuate or carinate

on the lower edge ; mesosternum without any tubercle on its anterior edge in

front of the median coxae.

Genotype, Deretiodes swezeyt, sp. n.

29. Deretiodes swezeyi, sp. n. (Text-fig. 14).

9. Derm red-brown, everywhere concealed by dense scaling ; head brown,

with a narrow median stripe, a small spot on each side of the vertex, a variable

patch on the forehead, and a narrow line above each eye, greyish white ; pro-

thorax greyish or yellowish white, with a small blackish patch on each side of

the middle of the base, an indefinite, broad, curved, brownish stripe from each

patch to beyond the middle, and a variable, ill-defined, pale brownish area on

each side at the apex; scutellum white; elytra dorsally with greyish-brown

scaling, having a distinct opalescent reflection, and with the following markings :

a supra-humeral greyish white patch between striae 3 and 7 and from the base

to one-fifth, but indefinite posteriorly ; an infra-humeral blackish brown patch

from the base nearly to the middle (and there broadly truncate), reaching the

lateral margin and extending broadly inwards behind the shoulder as far as

stria 5; an oblong patch on the suture in the middle of the declivity, a small

spot at the apex, and some variable and irregular spots behind the middle on

CURCULIONIDAE. 293

intervals 7-9, blackish ; an elevated brown stripe on interval 3 from the base

to one-fifth, and numerous rounded, raised, brown spots at and behind the middle

on intervals 1-5 ; a sub-quadrate whitish patch above and adjoining the sutural

black patch on the declivity, and irregular whitish markings and raised spots

behind the middle on intervals 3-9 ; the lower surface uniformly greyish white.

Head with fairly dense, erect, curved scales and very short, erect, scale-like

setae. Rostrum only slightly curved, distinctly narrowed from the base to the

Text-Fic. 14.—Deretiodes swezeyi, sp. n., Q.

middle, and thence slightly widening to the apex, with the antennae inserted at the

middle ; the apical half bare, and with fairly dense, small, separated punctures,

the basal half densely squamose. Antennae testaceous brown; funicle with

joint 1 a little longer and much wider than 2, 3-5 equal and as long as broad,

6 a little longer and broader. Prothorax a little broader than long (6 : 5), gently

rounded at the sides, widest at about the middle, deeply constricted and sub-

tubulate at the apex, the apical margin strongly arcuate and the base shallowly

294 INSECTS OF SAMOA.

bisinuate ; the dorsum feebly convex longitudinally, densely squamose, the

apical half of the scales being erect and concave, and just behind the constriction

a transverse row of four low elevations formed of groups of very stout, short, erect,

scale-like setae and erect scales; similar isolated erect setae scattered over the

dorsum, being most numerous near the apex. Scutellwm sub-quadrate, with dense,

overlapping, white scales. Hlytra comparatively elongate, sub-oblong, almost

parallel-sided from the shoulders to two-thirds, and broadly rounded at the apex ;

the more or less sinuous striae appearing narrow owing to the scaling and with

the punctures partly concealed ; interval 3 with a broad elevation from the

base to one-fifth, immediately behind which is a very shallow, broad, transverse

impression extending to stria 4 on each side; all the intervals with numerous,

irregular and variable pustules, formed of erect scales surrounding a very stout,

short, erect seta, the remaining scales being flat, overlapping and fluted ; interval

4 much narrower near the base than any of the others. Legs with dense, greyish

white scaling and scattered, stout, short, erect setae ; the femora with an indefinite

dorsal brown patch at the middle and another beyond the middle, the former

much reduced on the front pair, and much larger and darker on the hind pair ;

the tibiae greyish white with a brown basal patch.

Length: 3-9-4-2 mm. ; breadth, 1-7-1-8 mm.

Tutuila: Leone Road, 3 99, 7.ix.1923, under rotten bark (Swezey and

Wilder).

Type in the Bishop Museum, Honolulu.

Teleodactylus, gen. nov.

Another member of the Deretiosus group, agreeing with that genus and with

Deretiodes, gen. n., in the structure of the sternal furrow, but differig from

them both in the very unusual form of the third tarsal jomt, which, instead of

being deeply bilobate for the reception of the claw-joint, is broadly truncate on

its distal margin, the claw-joint being attached in a dorsal fovea, as in the

CALANDRINAE.

Differing also from Deretiosus in having only 6 funicular joimts to the

antennae and in the absence of the small tubercles in front of the median coxae ;

and from Deretiodes in having a small sharp tooth on all the femora.

Genotype, Teleodactylus roscidus, sp. n.

CURCULIONIDAE. 29

30. Teleodactylus roscidus, sp. n.

9. Derm piceous, hidden by dense scaling ; head fulvous, with two darker

patches in the middle, the base of the rostrum grey ; pronotum fulvous brown,

becoming paler laterally and with a sub-quadrate whitish patch in the basal

angles ; elytra fulvous brown, with an irregular mottling of dark brown and

numerous small whitish spots on the basal half and at the sides, a narrow macular

whitish line across the top of the declivity, and two conspicuous whitish spots

on each side of the apex; underside greyish white, with a brown patch at the

side of the mesosternum and the metasternum, and a brown apical border to

the anal ventrite.

Head with dense, recumbent, concave scales. Rostrum gently curved, almost

parallel-sided, with the antennae inserted at the middle; the basal half more

or less confluently punctate beneath the scaling, the apical half bare and with

fine, separated punctures. Antennae testaceous, slender ; joint 1 of the funicle

slightly shorter and much broader than 2, 3 twice as long as broad, 4 and 5

sub-quadrate, 6 broader and trapezoidal. Prothorax almost parallel-sided in

the basal half, then smuately narrowed to the broadly arcuate apex, the base

sub-truncate; the dorsum with dense, recumbent, concave scales, producing

a regular honeycomb appearance, and the following stout, erect, peg-like setae :

a group of 8 or 9 dark brown ones on each side of the apical area, a transverse

row of four groups of 2 or 3 setae just behind the constriction, and isolated, pale

setae along the lateral margin. Hlytra parallel-sided from the shoulders to

two-thirds and broadly rounded at the apex ; the striae straight, with the close,

shallow punctures entirely concealed by scaling ; the intervals without pustules,

but 3 with a short, low elevation near the base, 4 not noticeably narrowed at the

base, the alternate intervals each with a row of short, broad, erect, scale-like

setae ; the scales densely overlapping and not fluted. Legs densely squamose

and with short, stout, erect setae ; the femora whitish at the base turning to pale

fulvous at the apex, the hind pair with a broad median brown band, all bearing

a small sharp tooth at about the middle ; the tibiae varying from grey to fawn.

Length: 3-1-3-3 mm.; breadth, 1-4-1-5 mm.

Upolu: Malololelei, 2 99, xi.1924 (type), iv.1925.

296 INSECTS OF SAMOA.

31. Chaetectetorus tutuilae, sp. n. (Text-fig. 15).

32. Derm black to red-brown, clothed with dense, light yellowish-brown

scaling ; the pronotum with an indefinite bilobate blackish patch in the middle

of the base ; the elytra mottled with indefinite and variable blackish markings ;

underside uniform yellowish brown.

Head with dense, slightly concave scaling concealing the sculpture; the

forehead with a row of three or four erect spatulate setae along each eye margin.

Text-ric. 15.—Chaetectetorus tutuilae, sp. n., 3.

Rostrum closely punctate and densely squamose almost to the apex in 3, with

a feeble abbreviated median carina, the apical area finely and sparsely punctate ;

in Q the squamose area restricted to the basal half. Antennae with joint 1 of

the funicle much larger than any of the others and as long as 2+3+4; 2

longer than 3, about as long as broad ; 3~7 transverse and very slightly widening

distally. Prothorax about as long as broad, strongly rounded at the sides,

widest at the middle, regularly narrowing to the base, broadly and deeply

CURCULIONIDAE. 297

constricted near the apex, which is rounded, the base being somewhat broader

and bisinuate; the dorsum rather uneven, with a shallow median furrow which

does not quite reach the base and ends at some distance from the apex, and on

each side of it about the middle a deep rounded impression ; the close sub-

confluent punctation everywhere concealed by the dense scaling, which forms

an amorphous incrustation, the individual scales being scarcely discernible ;

the setae sparse, erect, and spatulate. Scutellwm punctiform, yellow. LElytra

oblong-ovate, short, 1-4 times as long as broad, with the shoulders moderately

prominent and parallel-sided from there to only a little behind the middle, the

sub-apical constriction being strong; the striae with large close punctures in

the basal half which suddenly become much smaller behind; the intervals

actually rather narrower than the striae, but appearing broader when the scaling

is intact, and each with a row of erect spatulate setae, these being denser in the

middle of interval 3, which is also somewhat elevated at the base. Legs with

dense yellowish-brown scaling, the posterior pairs of femora with an indefinite

darker median dorsal patch.

Length : 2-6-2:8; breadth, 1-2-1-3 mm.

Tutuila: Pago Pago, 9 specimens, 21—25.ix.1923 (Swezey and Wilder).

Type in the Bishop Museum, Honolulu.

The smallest species of the genus known to me and coming nearest to C.

hisirio, Pasc., from Yule Island, which differs in its conspicuous black-and-white

colouring, and, ter alia, in having the prothorax parallel-sided in the basal

half, the elytra much more oblong and elongate (the length being 1-65 times the

breadth), and the two basal joints of the funicle equal.

32. Rhadinomerus atomosparsus, Fairmaire.

Cyamobolus atomosparsus, Fairmaire, Pet. Nouv. Ent., ii, p. 282, 1878; Ann. Soc. Ent. France,

(6) i, p. 311, 1881.

Tutuila: Pago Pago, 1 9, 14.1x.1923 (J. Steffany). Originally recorded

from Fiji.

33. Orochlesis nigrofasciata, Marshall.

Proc. Hawaii. Ent. Soc., iv, p. 593, 1921,

Upolu: Malololelei, 1 9, 25.iv.1925.

Savaii: Fagamalo, 1 9, xi.1925.

Iv. 5 4

298 INSECTS OF SAMOA.

34. Trigonopterus crinipes, sp. n. (Text-figs. 16, b ; 17, 6).

do. Colour uniform shining bronze or blue-black, with a small elongate

patch of a few narrow white scales near the apex of each elytron between striae

3 and 6.

Head with rather fine separated punctures, which become much coarser

and confluent on the forehead; the latter with short sub-erect white setae.

Rostrum of 3 with three rather variable dorsal carinae, of which the median one

is rather higher and wider than the others in the middle, extending to one-fourth

(i ©

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Trext-Fic. 16.—(a) Trigonopterus bryani, sp. n.; (b) T. crinipes, sp. n.; (c) ZT. serratipes, sp. n.

from the apex, the apical area being rugosely and shallowly punctate, and the

punctate spaces between the carinae with the usual rows of obliquely raised

setae; that of 9 with the dorsal carinae only from the base to near the middle,

the apical half smooth, with two very irregular rows of small punctures and with

a deep sulcus on each side. Prothorax wider than the elytra in g, broadest not

far from the base and narrowing in a curve to the apex without any constriction ;

in 9, as wide as the elytra at the base and narrowing from there to the apex ;

the apical margin gently arcuate and half as wide as the base ; the dorsal punc-

tures fine and distant, being unusually even in both size and spacing, and with

a transverse basal row of punctures, the margin being impressed only at the

CURCULIONIDAE. 299

sides ; the dorsal punctures with very minute recumbent setae on the apical

half ; the pleurae with numerous large punctures, each containing a recumbent

seta on the apical half, and with only a few much smaller ones in the basal

impression. Hlyéra sub-triangular in g, widest at the base and rapidly narrowing

to the broadly rounded apex, the sides being almost straight ; in 2, parallel-sided

for a short distance from the base and then narrowed to the apex ; the rows of

punctures complete, but extremely small and distant, and not striate except

at the apex, with a fovea at the base of each row ; the punctures on the inflexed

—=

ESOS ES es

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Stee eS

ee sm aoe

©.

”

Text-ric. 17.—Legs of Trigonopterus : a, front femur of 7. serratipes, sp. n.; b, hind tibia of 7.

crinipes, sp. n., 3; ¢, front tibia of 7’. caesipes, sp. n., 3; d, hind tibia of 7. submetallicus, Mshl.

margins slightly larger than those on the disk, and row 9 with three or four

large punctures at the base; the discal intervals each with a row of minute

punctures of the same size as those in the typical rows but much more numerous,

those on interval 1 being irregularly duplicated, and those on the lateral intervals

more sparse or obsolete; the basal foveae and the coarser apical punctures

with small recumbent pale setae, sometimes minute. Legs with the femora not

toothed and the punctures coarser and denser on the apical half, usually with

two irregular rows of punctures on the outer face and two on the dorsal edge

extending almost to the base, the doubled fringe on the lower edge longer than

300 INSECTS OF SAMOA.

usual ; the front tibiae with the inner apical angle produced into a short, sharp

tooth, the middle pair broadly dilated inwardly at the apex (4), and the hind

pair with a fringe of long curled hairs on the inner face (4) (text-fig. 17, b) and a

short, sharp spine above the base of the uncus (often broken). Venter with a

rather irregular transverse row of small punctures on ventrites 3 and 4; the

anal ventrite without obvious setae, and in f with two large shallow impressions

in the apical half that are set with very fine shallow confluent punctures, in 9

with coarse separated punctures in the apical half and no impressions.

Length : 3-0-3-6 mm.; breadth, 1-2-1-4 mm.

Upolu: Apia, 1 9, xu.1924; Mt. Vaea, 1,500 ft., Apia, 1 g, 20.x11.1924 ;

Malololelei, 4 gg, ll., vi., x1.1924, vil.1925 (type).

Savai: Safune, 1 J, 13.v.1924 (Bryan) ; Salailua, 1 ¢, 22.v.1924 (Bryan).

35. Trigonopterus submetallicus, Marshall (Text-fig. 17, d).

Proc. Hawatt. Ent. Soc., iv, p. 590, 1921.

Tutuila: Pago Pago, 3 gg, 1 9, 16.1v.1924 (Bryan), 4 gg, 14.x1.1925.

In the original description there is a misprint; on page 591, line 2, for

“behind ” read “ beyond.”

35A. Trigonopterus submetallicus mendax, subsp. mn:

The specimens of this species from Upolu appear to differ fairly constantly

from those taken on Tutuila (typical form) in the following particulars :—

In submetallicus the minute hairs on the disk of the pronotum (a magnifi-

cation of at least 40 is needed in order to see them) are closely recumbent, ven-

trites 3 and 4 bear a complete transverse row of punctures, and ventrite 5 has

only sparse, short, recumbent hairs on each side.

In submetallicus mendazx the hairs on the pronotum are quite erect, ventrites

3 and 4 have punctures at the sides only and not in the middle, and ventrite 5

bears more numerous longer, stouter, sub-erect setae on each side.

Upolu: Apia, 1 g, 1 9, xi1.1924; Vailima, 1 3, 2 99, 13.1x.1925 (type) ;

Malololelei, 1 ¢, 4 99, vi., xi.1924, iv., viil.1925.

Savail: Safune, 1 9, 13.v.1924.

CURCULIONIDAH. 301

36. Trigonopterus caesipes, sp. n. (Text-fig. 17, c).

dg. Derm shiny black, the only markings being an elongate dense patch

of narrow white scales near the apex of each elytron between striae 3 and 6.

Head with a few sparse punctures on the vertex, these becoming much more

dense in front and rugosely confluent on the forehead, which bears minute, erect,

pale hairs. Rostrum with three well-marked dorsal carinae extending almost to

the apex, the adjoining spaces shagreened and bearing in the basal half four rows

of backwardly directed stout sub-erect white setae, and on the apical half much

finer, transversely placed hairs. Prothorax a little broader than long (11: 9),

parallel-sided from the base to the middle, then rapidly narrowed to the apex,

but without any sub-apical constriction, and the apical margin strongly arcuate

dorsally ; the dorsal punctures fine and well separated, becoming finer and

sparser basally (especially towards the sides) and larger and denser near the apex,

but with a sparsely punctate area at the side of the dorsum near the apex and

with a transverse row of close small punctures along the basal margin ; all the

dorsal punctures with a very short, erect, pale seta; the pleurae set with very

large, but not confluent, punctures, which are less closely set in the basal de-

pression. Hlytra elongate-ovate, widening from the base to one-fourth and then

rapidly narrowing to the broadly rounded apex, the sides being almost straight,

and the basal margin truncate and slightly raised ; the rows of punctures all

complete, distinct and very shallowly striate, the punctures being larger than

those in the middle of the disk of the pronotum, and those at the base of each

row much larger than any of the others and elongate ; striae 8 and 9 deeper than

the others, the six basal punctures in stria 9 being all very large and contiguous,

and stria 10 represented only by a few small punctures at the base and apex ;

the intervals each with a row of fine punctures, the punctures more or less

duplicated on the basal half of intervals 1 and 3 and becoming much more sparse

on the lateral intervals ; in addition to the elongate white sub-apical patches

there are only a few minute pale setae at the base of the intervals and along the

apical margin. Legs with rather sparse, recumbent, pale setae ; the femora not

toothed, but the front pair obtusely angulate beyond the middle on the lower

edge, and the hind pair with a row of white scales along the dorsal edge; the

front tibiae with a small tooth at the inner apical angle, and with the inner face

shallowly excised on the apical third, forming an obtuse angulation at one-third

from the apex (probably a male character only) (text-fig. 17, c); the hind tibiae

302 INSECTS OF SAMOA.

with a small acute projection just above the base of the uncus. Venter with a

row of punctures across ventrites 3 and 4.

Length: 3-6 mm. ; breadth, 1-5 mm.

Upolu: Malololelei, 2,000 ft., 1 g, vi.1924.

37. Trigonopterus aeneoniveus, Fairmaire.

Le Naturaliste, i, p. 19, 1879; Ann. Soc. Ent. France, (6) i, p. 315, 1881.

Upolu: Malololelei, 1 ¢, iv.1924 ; Vailima, 1 ¢, 1 9, 13.1x.1925.

Savau: Safune, 8 gg, 1 9, v.1924 (Bryan).

38. Trigonopterus bicolor, Marshall.

Proc. Hawau. Ent. Soc., iv, p. 592, 1921.

Tutuila: Pago Pago, 3 gg, iv. 1924 (Bryan).

39. Trigonopterus serratipes, sp. n. (Text-figs. 16, ¢; 17, a).

9. Colour black, rather shiny ; the elytra red-brown, with the apex and

the extreme basal margin blackish ; devoid of scaling, and the setae on the upper

side minute and inconspicuous.

Head with remote punctures on the vertex, those on the forehead coarse

and confluent. Rostrum with four rows of coarse punctures near the base, but

scarcely carinate, anteriorly smooth, with two irregular rows of fine punctures

and a sulcus on each side. Prothorax slightly broader than long (9 : 8), rounded

at the sides, widest at the middle, gently narrowing to the base, more strongly

narrowed in front, and shallowly constricted near the apex, with the apical

margin dorsally truncate ; the dorsum with an abbreviated smooth median line,

the punctures on each side of it being rather small, deep and separated, but

becoming rapidly larger laterally, and very large and sub-reticulate on the

prosternum, which is punctate throughout; a scarcely impressed transverse

row of small punctures across the base ; the setae in the dorsal punctures minute,

but becoming rapidly longer laterally. Elytra ovate, strongly rounded laterally

in the basal half, widest at about one-fourth from the base, rapidly narrowing

behind and broadly rounded at the apex, the basal margin markedly elevated

as a broad costa; the rows of punctures deep and well-marked throughout and

feebly striate on the dorsum, the basal punctures in each row not or but little

CURCULIONIDAE. 303

larger than the succeeding punctures; the dorsal intervals each with a row of

minute closely set punctures which disappear posteriorly, except interval 1,

which has an irregularly duplicated row from the base to the top of the declivity

and a single row thence to the apex ; the punctures bearing very minute recum-

bent setae which are only slightly longer towards the apex. Legs with the

femora closely serrate on the lower edge (more marked on the front pair) (text-

fig. 17, a), the punctures coarser and closer on the apical half, the hind pair

with a single dorsal row of squamiform setae; the front tibiae with the inner

apical angle rounded, the hind pair with a rudimentary projection above the

base of the uncus. Venter with a complete row of punctures across ventrites

3 and 4.

Length: 2:8 mm.; breadth, 1-3 mm.

Savail: Safune, 2,000-4,000 ft., in rain forest, 1 9, 3.v.1924 (Bryan).

Type in the Bishop Museum, Honolulu.

40. Trigonopterus bryani, sp. n. (Text-fig. 16, a).

6@. Colour black, shiny, devoid of scaling or conspicuous setae.

Head with scattered strong punctures on the vertex, those on the forehead

rugosely confluent. Rostrum of ¢ tricarinate almost to the apex, the median

carina scarcely wider than the lateral ones but distinctly higher on the basal

half, the shallowly punctate sulci with short and rather inconspicuous setae ;

that of 2 tricarinate to three-fourths, the apical area with two admedian rows

of punctures and a deep sulcus on each side. Prothorax slightly broader than

long and distinctly constricted at the apex ; sub-parallel-sided in the basal third

in g and then narrowing in a curve to the apex, in 2 narrowing directly from the

base ; the apical margin arcuate dorsally and half the width of the base; the

dorsum with large and fairly close punctures on the disk, where they are of

approximately equal size but becoming rather denser in front, especially in Q,

rather smaller and much sparser laterally, particularly towards the basal angles ;

in ¢ a variable median impunctate line, which is more conspicuous and usually

sub-costate in 2; the pleurae with rather larger punctures than the disk, very

close or sub-reticulate in front but sparse near the base; all the punctures with

a short pale recumbent seta. LHlytra elongate-ovate, widening from the base

to one-fourth, then rapidly narrowing to the apex, which is broadly rounded

with a small sinuation at the suture ; the basal margin truncate and not elevated ;

304 INSECTS OF SAMOA.

the rows of punctures well marked throughout, shallowly striate even on the

disk (though the striation is occasionally obsolete in 3), each with a much larger

puncture at the base, except rows 7 and 8 which unite at a little distance before

reaching the base ; the intervals each with a single row of widely spaced minute

punctures, but on interval 1 these punctures are very numerous and smaller

than those in stria 1; a few minute setae near the apex only. Legs with short,

sparse, recumbent, white setae, without any scales ; the femora not toothed, the

outer face with two rows of punctures that become sulcate apically, the dorsal

surface rather irregularly punctate ; the front tibiae with the inner apical angle

rounded, the hind pair with no spine above the base of the uncus, and no fringe

in g.

Length : 2-5-2-8 mm.; breadth, 1-3-1-4 mm.

Tutuila: Pago Pago, 12 3g, 12 99, iv.1924 (Bryan).

Type in the Bishop Museum, Honolulu.

41. Trigonopterus samoanus, Heller.

Idotasia samoana, Heller, Denks. K. Akad. Wiss. Wien, Math.-Naturw. K1., 89, p. 696, 1913.

Upolu: 2 gg, 1905 (Dr. Rechinger).

This species is not represented in the collections here dealt with, but,

thanks to the courtesy of Dr. van Emden, I have been able to examine the

typical specimens from the Dresden Museum.

42. Trigonopterus binotatus, Marshall.

Proc. Hawaii. Ent. Soc., iv, p. 591, 1921.

Tutuila: 1 g, 22.ix.1918 (Dr. H. C. Kellers).

This species likewise is unrepresented in the material now before me.

The following key will probably facilitate the identification of the nine

Samoan species of this somewhat difficult genus.

1 (6). Inner apical angle of front tibiae produced into a sharp point ;

pronotum finely punctate ; hind tibiae with a short sub-apical

spine on the dorsal edge just above the base of the uncus (some-

times broken off) (text-fig. 17, d).

2 (5). Punctures on lateral inflexed area of elytra extremely minute or

obsolete, except at base and apex ; front tibiae of $ not excised

on the apical half of the inner face.

1 (12).

12 (11).

13 (14).

14 (13).

15 (16).

16 (15).

CURCULIONIDAE.

. Elytra at their widest not wider than prothorax in 9, narrower in

6; basal puncture in stria 1 as large as that in 2; ¢ with the

mid tibiae broadly dilated inwardly at the apex, and the hind

tibiae fringed with long, curled hairs (text-fig. 17, b) .

. Elytra distinctly Gee than the prothorax in both sexes, the

basal puncture in stria 1 much smaller than that in 2; tibiae

of 3 simple

. Punctures on lateral Ratikesze area oi alyers Berone ome cig

throughout ; front tibiae of 3 excised on the apical third of

the inner face, forming an obtuse angulation at one-third from

apex (text-fig. 17,c) . ‘ : : : °

. Inner apical angle of front tibiae pecnded:

. Pronotum fade punctate ; hind tibiae with a short sub-apical

spine on the dorsal ee colour, metallic bronze; length,

4-2-4-5 mm.

. Pronotum coarsely pleeree hind tibiae without a sub-apical

spine ; colour, black or chestnut-brown ; length, 2-7-3-3 mm.

. Prothorax not constricted at apex; row 8 on elytra much

abbreviated, visible only on the apical half

. Prothorax constricted at apex; row 8 on elytra nearly enphitie

the base.

Front femora closely serrate on the lower edge (text-fig. 17, a) ;

prothorax gradually narrowing from middle to base; basal

margin of elytra strongly costate, the basal puncture in each

row not or but slightly larger than the succeeding punctures,

the punctures on interval 1 much smaller and much more

numerous than those in stria | :

Front femora not serrate ; posterior half of prothorax Parallel:

sided or widening from middle to base; basal margin of elytra

not or but slightly costate Gene) the basal puncture in

each row much larger than the others.

Prothorax with a smooth median line in g, which is usually sub-

costate in 9; punctures on interval 1 of elytra much smaller

and much more numerous than those in stria | ; median carina

on rostrum higher than the lateral ones ; hind femora without

scales 3 . 3

Prothorax without a eroern spain FAO punctures on

interval 1 of the same size as and but little more numerous on

the disk than those in stria 1; median carina on rostrum not

higher than the lateral ones.

Median carina on rostrum not broader than the lateral ones ;

elytra without a sub-apical patch of dense scales ; Sane

pairs of femora without scales

Median carina on rostrum much broader ‘iho the eel ones ;

elytra with an elongate sub-apical patch of dense scales between

striae 3 and 6; posterior pairs of femora with a dorsal row of

elongate white scales . : : . :

crinipes, Sp. D.

submetallicus, Mshl.

caesvpes, Sp. Ne

305

aeneoniveus, Fairm.

bicolor, Mshl.

serratupes, Sp. D.

bryant, sp. n.

samoanus, Hlr.

binotatus, Mshl.

306 INSECTS OF SAMOA.

43. Ampagia cribrellicollis, Fairmaire.

Trigonopterus cribrellicollis, Fairmaire, Ann. Soc. Ent. France, (6) i, p. 316, 1881.

The type of this species cannot now be traced, and the description does not

agree with any species of Trigonopterus known to me. Fairmaire states that

his specimen had lost both its head and its legs, and it is therefore not unreason-

able to assume that it was also abraded. Allowing for this, his description agrees

quite satisfactorily with an Ampagia that occurs on Upolu and Tutuila, the

scaling of which appears to be easily rubbed off. The following is a fuller

description.

Colour piceous black, with the antennae, apex (or whole) of tarsi, tibiae

(occasionally), and sometimes the dorsal part of the elytra above row 5, red-

brown; the dorsum only of the prothorax with moderately dense blackish-

brown and fulvous scales, sometimes one and sometimes the other predominating,

and with a few scattered whitish scales; the pleurae with very sparse brown

scales ; the elytra dorsally (as far as row 5) with similar fulvous scales and very

variable patches of white and blackish scaling, the lateral areas quite bare.

Head with dense black, brown or fulvous scales and a row of sub-erect pale

scales round the eye-margins. Rostrum as wide at base as at apex, with the

sides sinuate ; in ¢ closely and strongly punctate in apical half, longitudinally

rugose in basal half; in 9, the punctures much finer and separated, rugose only

at extreme base. Prothorax conical, almost straight at the sides, not constricted

in front, the apical margin broadly arcuate, the base shallowly bisinuate ; the

dorsum strongly convex longitudinally, closely punctate throughout, the

punctures becoming larger laterally and showing a slight tendency to become

longitudinally confluent in front; the pleurae much more sparsely punctate,

especially in the middle; the dorsal scales all rather broadly sub-triangular,

those on the pleurae somewhat narrower. Elytra narrowly sub-elliptical, roundly

narrowing to the apex; the punctures in rows 1-4 small and widely separated,

except at the base and apex where they are rather larger and close, those in row 5

equally numerous but much larger than the ones in 1-4; the punctures in rows

6-7 larger still, but fewer in the basal two-thirds and much reduced towards

the apex, in row 7 a larger space between the 2nd and 8rd (or 3rd and 4th)

punctures, and a similar or larger one in row 8 between the 8rd and 4th punctures ;

the punctures again slightly smaller and more numerous in row 9, which is

distinctly striate in the apical third or fourth ; and row 10 ceasing entirely at

CURCULIONIDAE. 307

the hind coxa. Venter with the elevated median area of the basal ventrite

quite flat and rather rugosely punctate throughout ; the anal ventrite only half

as long as its basal width and rugosely punctate.

Length: 3-0-3-3 mm. ; breadth, 1-2-1-4 mm.

Upolu: Apia, 1 9, 8.v.1925 (Wilder) ; Malololelei, 1 g, 1 9, iv.1925.

Tutuila: Pago Pago, 1 g, 12.iv.1924 (Bryan); Fagasa, 1 9, 8.1x.1923

(Swezey and Wilder).

Savaii: Safune, 1 ¢, 12.v.1924 (Bryan).

The male specimen from Malololelei is treated as a neotype.

44, Ampagia semisuturalis, sp. n.

§. Colour shiny black, the basal half of the elytra (except the actual base)

as far as row 6 or 7, the basal half of the venter, and the apex of the tarsi, red-

brown ; prothorax rather thinly clothed with black scales, with a few white

ones scattered on the middle of the disk in the basal half and others along the

apical margin down to the front coxae ; elytra with a narrow common band of

black scales along the basal margin as far as row 7, a broad stripe of dense fulvous

scales on interval 1 from the basal band to the middle, which continues as a

broader stripe (on intervals 1 and 2) of less dense black scales, ultimately ex-

panding to cover the whole apex except for some indefinite patches of white

scales externally ; a few white squamiform setae in the fulvous sutural stripe

and a few more on the adjoining bare intervals; legs with black scales and

scattered white ones, with a dense stripe of white scales along the upper and

lower edges of the femora.

Structurally very similar to A. cribrellicollis and differing principally as

follows: Rostrum of g with a smooth median stripe on the apical half. Prothorax

with thespunctures on the dorsum rather more elongate and much more definitely

confluent longitudinally in front, those on the pleurae more numerous and more

evenly distributed. Hlytra narrowly ovate, more rapidly narrowed behind the

middle, the sides being there almost straight ; the posterior declivity less steep ;

the punctures in the rows 1-4 distinctly smaller than in A. cribrellicollis, those

in 5 hardly smaller than in the upper rows, no definite spaces in rows 7 and 8,

and row 10 continued to the apex as a sharp, shallowly punctate stria. Venter

with the elevated area of the basal ventrite () shallowly impressed down the

308 INSECTS OF SAMOA.

middle and there devoid of punctures ; the length of the anal ventrite two-thirds

of the basal width, the punctures close and deep but not rugose.

Length : 3-3 mm.; breadth, 1-2 mm.

Upolu: Malololelei, 1 3, 20.iv.1925.

ZYGOPINAE.

45. Mecopus trilineatus, Guérin.

Voy. Coquille, p. 126, 1830 ; Icon. Réqne Anim., v, pl. 39, fig. 8.

Upolu: Apia, 17 gg, 14 29, v., vil.1924.

BARIDINAE.

Eremonyx, gen. nov.

Head separated from the rostrum by a transverse depression ; the frons as

broad as the rostrum in its basal half. Rostrum comparatively short and stout,

more or less compressed at the base, scarcely narrowed dorso-ventrally from

base to apex, and with the antennae inserted at or a little beyond the middle ;

the mandibles bidentate and decussate. Antennae with joint 7 of the funicle

not annexed to the club, and the basal joint of the club shiny and sparsely

setose. Legs with the posterior pairs of femora shallowly sulcate beneath ; the

tarsi with the claw joint unusually short and bearing only a single claw ; tro-

chanters with a single seta. Sternum with a shallow prosternal furrow, the

space between the front coxae at least as broad as a coxa, and the median

post-coxal piece not produced backwards; the mesosterum depressed trans-

versely at the base, and the intercoxal process much wider than a coxa.

Pygidium vertical, short, strongly transverse, and more or less impressed.

Genotype, Hremonyx samoanus, sp. n.

This genus is the only one of the BarrpinaE known to me that has only a

single claw on the tarsi. It belongs to Casey’s group Bartni, and in general

facies closely resembles Baris, but this latter genus, in addition to its two free

tarsal claws, differs in having the front coxae much more closely approximated ;

the femora are not sulcate beneath; the trochanters bear no seta; and the

pygidium is much longer, almost semicircular, and distinctly convex.

CURCULIONIDAE. 309

46. Eremonyx samoanus, sp. n.

®. Uniformly black, not very shiny, entirely devoid of scaling.

Head separated from the rostrum by a rather shallow transverse impression

containing a deep median fovea ; the forehead with large close punctures, which

rapidly become small and sparse behind and are entirely lacking on the vertex.

Rostrum rather strongly and regularly curved, reaching to about the hind margin

of the prosternum, parallel-sided to near the apex and there slightly dilated,

strongly and confusedly punctate at the base and then with four dorsal rows of

punctures to the antennae, leaving a smooth median line that widens anteriorly ;

the apical area with rather smaller and less regular punctures. Antennae with

the scape about as long as joints 1-4 of the funicle; the latter with joint 1 as

long as 2+4 and bearing a patch of stiff dark setae at its apex, and joints 3-7

transverse and very gradually widening distally. Prothorax about as long as

broad, almost parallel-sided from the base to the middle, then narrowing in a

curve to the apex, and with the sub-apical constriction invisible from above ;

the dorsum convex longitudinally, highest a little behind the middle, fairly

evenly set throughout with large round separated punctures leaving an irregular

and variable smooth median line, the interspaces being always narrower than

the punctures; the pleurae with the punctures closer together. Scutellum

broadly rounded at the apex and very shallowly impressed in the middle. Elytra

narrowly ovate, widest a little behind the oblique and only slightly prominent

shoulders, very gradually narrowing behind, broadly rounded at the apex,

without any dorsal impressions, and with the posterior callus very feeble; the

striae strong, broader at the base and apex, and containing shallow distant

punctures that are not broader than the striae ; the intervals flat, more or less

alutaceous, each with a row of spaced punctures, which are larger at the base.

Legs black, coarsely punctate; the front femora obtusely denticulate on the

lower edge in the basal half. Sternwm with coarse, close punctures, but those

on the middle of the metasternum smaller and less close. Venter with the

punctures on the two basal ventrites like those on the middle of the metasternum

but rather more distant ; ventrites 3 and 4 (5 and 6) with a single transverse

row of punctures in the middle and two at the sides.

Length : 2:25-2:75 mm.; breadth, 0-75-0-9 mm.

Upolu: Malololelei, 1 9, 20.iv.1925 (type).

Tutuila: 1 Q (Swezey and Wildet).

310 INSECTS OF SAMOA.

The Tutuila specimen is larger, and has the punctures on the elytra smaller

and those on the venter rather larger than in the type.

47. Eremonyx rufoplagiatus, sp. n.

9. Black, not very shiny; the elytra with a large ill-defined, common,

red-brown patch extending from before the middle to the top of the declivity,

almost reaching the lateral margins, and deeply sinuate in front and behind.

Nearly allied to H. samoanus, but differing from it iter ala in the following

characters: Head separated from the rostrum by a deep stria, which contains

no fovea. Rostrum gently curved in the basal half and straight in the apical

half, and extending well beyond the hind margin of the prosternum. Antennae

with the scape as long as joints 1-6 of the funicle ; joint 1 of the latter as long

as 2+3-+4 and bearing a patch of pale setae at the apex. Prothorax with a

feeble sub-apical constriction visible from above; the punctures smaller and

sub-confluent laterally in the apical half, larger and more distant in the basal

half, where the interspaces are sometimes even wider than the punctures. Elytra

with the punctures on the intervals much reduced, being practically obliterated

on the disk. Legs with two sharp teeth on the basal half of the front femora.

Venter with the punctures much smaller than those on the middle of the meta-

sternum.

Length: 2-25 mm.; breadth, 0:75 mm.

Tutuila: 1 9 (Swezey and Wilder).

Type in the Bishop Museum, Honolulu.

48. Omobaris lucens, sp. n. (Text-figs. 18, 19, a).

9. Black, very shiny, bare, except for some elongate whitish scales laterally

on the basal half of the rostrum, and similar scales down the middle of the

prosternum.

Head with the vertex almost impunctate, the forehead with close, strong

punctures and a median fovea. Rostrum stout, gently curved, about as long as

the pronotum, with strong, dense punctures at the base, which rapidly become

much finer and sparser to the middle, the apical half being impunctate. Antennae

black ; joint 1 of the funicle somewhat longer than 2+3, 2-4 a little longer than

broad, 5 and 6 sub-quadrate, 7 transverse. Prothorax a little broader than long,

CURCULIONIDAE. 311

narrowing with a slight curve from base to apex, without any sub-apical con-

striction; the apex truncate dorsally and two-thirds the width of the base ;

Text-ricg. 18,—Omobaris lucens, sp. n., 9.

the dorsum longitudinally convex, highest at the middle, strongly punctate,

the interspaces being about as wide as the punctures, and with a well-defined

complete median impunctate line; the pleurae with similar but more distant

312 INSECTS OF SAMOA.

punctures. Scutellum small, rounded, with a transverse impressed line. Elytra

sub-triangular, widest just behind the obtusely rounded shoulders, and rapidly

narrowing from there to the narrowly rounded apex, without any sub-apical

constriction or posterior calli; the striae fine but deep, containing small punc-

tures that are larger and closer near the base and become much smaller and

more distant behind, the punctures slightly indenting the margins of the striae ;

the intervals broad, flat and shiny, with extremely minute punctures, usually

forming an irregular row. Legs black, with very sparse minute sub-recumbent

setae, only the tarsal claws and tibial uncus red; the femora comparatively

Text-ric. 19.—Head and prothorax, lateral view, of: (a) Omobaris lucens, sp. n., 9;

(b) Nesobaris tutuilae, sp. n., 3.

slender ; feebly clavate, with fine sparse punctures on the basal half or two-

thirds, the apical area coarsely punctate; the tibiae opaque, with obsolescent

punctures and no carinae ; the tarsi long and slender, joint 2 longer than broad.

Underside coarsely punctate on the sternum; the basal ventrite with smaller,

more distant punctures, the remaining ventrites with very sparse, minute

punctures.

Length: 3-7 mm.; breadth, 1-4 mm.

Upolu: Malololelei, 2,000 ft., 1 9, vi.1924.

In its general form and shiny surface this insect strongly resembles certain

species of the Cryptorrhynchine genus Trigonopterus. It is provisionally

CURCULIONIDAE. 318

referred to the Malayan genus Omobaris, Marshall (Bull. Ent. Res., xvi, p. 217,

1927),* but differs from the only other known species in its sub-conical prothorax,

tapering elytra, slender tarsi, and the spine at the inner apical angle of the tibiae.

Nesobaris, gen. nov.

Head with the eyes very large and the frons much narrower than the base

of the rostrum. Rostrwm with its dorsal outline continuous with that of the

head, narrowed dorso-ventrally in its apical half, and with the antennae inserted

well beyond the middle; the mandibles bidentate and decussate. Antennae

with joint 7 of the funicle closely annexed to the club. Prothorax with the apex

truncate dorsally and laterally, and the base shallowly bisinuate. Legs with

the femora only slightly clavate, not sulcate or toothed beneath; the tibiae

not widening distally, the inner apical angle acute at least on the front pair ;

the tarsi with the claws free and very small; the trochanters with an erect

seta.. Sternum: the prosternum deeply sulcate in front, truncate at the base ;

the mesosternum transversely impressed, the intercoxal space wider than a

coxa. Pygidium concealed from above, but narrowly visible ventrally.

Genotype, Nesobaris tutuilae, sp. n.

This genus appears to agree in many respects with the description of Soleno-

baris, Lea 1906, but the latter differs in having the antennae inserted in the

middle of the rostrum, the prosternal furrow invades the mesosternum, and the

pygidium is distinctly exposed.

49. Nesobaris tutuilae, sp. n. (Text-figs. 19, b; 20).

g. Colour black, not very shiny, bare, with the legs piceous.

Head quite continuous with the rostrum, alutaceous and scarcely punctate,

except on the frons, which is much narrower than the base of the rostrum and

bears a few punctures but no fovea. Rostrum not reaching the base of the

prosternum, rather strongly curved dorsally, distinctly narrowed dorso-ventrally

towards the apex, and with the antennae inserted in front of the middle; the

dorsum with irregular rows of punctures in the basal half leaving a narrow

abbreviated smooth median line; the punctures with extremely minute setae.

* In the description of this genus it is erroneously stated that the outer apical angle of the

tibiae is not produced ; for “ outer’’ read “ inner.”

Iv. 5 9)

Sai sRna SD Ghiemmeneiimmmemmmenmen nmap ea

314 INSECTS OF SAMOA.

Antennae with the scape about as long as joints 1-5 of the funicle, the latter with

joints 3-7 transverse and scarcely widening distally ; the basal joint of the club

transverse and shorter than the rest of the club. Prothorax about as long as

broad, widest at the base and gradually narrowing to the apex, with the sides

gently rounded and the very shallow sub-apical constriction scarcely noticeable

from above; the dorsum feebly convex longitudinally, highest at one-third

p ‘

TEext-F1G. 20.—Nesobaris tutuilae, sp. n., 3.

from the base, alutaceous, with fairly large separated shallow punctures and

without any definite smooth median line, the spaces between the punctures

mostly much wider than the punctures ; the pleurae with the upper half more

deeply and closely punctate than the dorsum, the lower half impunctate.

Scutellum transverse and shallowly impressed in the middle. Elytra ovate,

widest at the very prominent shoulders and gradually narrowing behind, without

CURCULIONIDAE. 315

any discal impressions or posterior calli ; the striae deep, but becoming shallower

towards the apex and containing deep, distant punctures, which are slightly

wider than the striae and also diminish behind, the punctures in striae 1 and 2

being rather more numerous than in the others ; the intervals broader than the

striae, flat, alutaceous, and each with a row of fine spaced punctures, which

contain minute, speck-like, pale setae. Legs comparatively long and slender,

with scattered shallow punctures and very short, pale, recumbent setae; the

posterior pairs of femora feebly sulcate on the lower face ; only the front tibiae

dilated at the apex and with a short, sharp tooth at the inner angle; the tarsi

with the claw-joint of normal length, the claws small and dark, the third joint

with the lobes rather widely spread and sub-equal, the second as long as or longer

than broad. Sternwm with the lateral ridges of the pectoral furrow showing a

short continuation behind the front coxae, a very large deep fovea on each side

of the furrow, the piece between the front coxae much narrower than the antennal

club, and the hind margin of the prosternum arcuate in the middle ; the meso-

sternal process wider than a coxa. Venter with two transverse rows of punctures

on ventrite 2 (4), and ventrites 3 and 4 (5 and 6) with a single row and addi-

tional punctures at the sides.

Length: 1-6-1:8 mm.; breadth, 0-6-0-7 mm.

Tutuila: Pago Pago, 2 gg, 16-18.iv.1924 (Bryan).

Type in the Bishop Museum, Honolulu.

50. Nesobaris parvungulis, sp. n.

g- Colour uniform dull black, without scaling.

Head quite continuous with the rostrum, alutaceous and with a few shallow

punctures ; the eyes large, the frons narrower than the base of the rostrum

and without any fovea. Rostrwm not reaching the base of the prosternum,

not very stout, only slightly curved, not narrowed dorso-ventrally at the

apex, and with the antennae inserted at one-third from the apex; four rows

of confluent punctures in the basal half, the median space the broadest ; each

puncture containing a short recumbent pale seta. Antennae with the scape

about as long as the funicle, the latter with joints 3-7 transverse and slightly

widening distally ; the basal joint of the club a little longer than broad and

much longer than the rest together. Prothorax a little broader than long (5: 4),

gently rounded at the sides, widest behind the middle, distinctly constricted

316 INSECTS OF SAMOA.

near the apex, and with the constriction continued shallowly across the disk ;

the dorsum distinctly convex longitudinally, highest behind the middle, fairly

evenly set with strong separated punctures, without any smooth median line,

the interspaces often as wide as the punctures on the disk but not laterally, and

without any setae ; the pleurae closely punctate down to the coxae. Scutellum

small and circular. Elytra oblong-ovate, with the shoulders oblique and not

very prominent, almost parallel-sided from there to the middle, and then

gradually narrowing behind, without any discal impressions or posterior calli ;

the striae equally deep throughout and containing distant shallow punctures,

which are slightly wider than the striae only near the base ; the intervals broader

than the striae, flat, alutaceous, and each with a row of small shallow spaced

punctures. Legs with sparse short pale setae ; the femora shallowly punctate,

the posterior pairs flattened or feebly sulcate on the lower face; the tibiae not

dilated apically, the front pair with a short, sharp tooth at the inner apical

angle; the tarsi with the claw-joint comparatively short and the claws minute

and pale, the third joint with one lobe markedly larger than the other, the second

joint transverse. Sternwm with the lateral ridges of the pectoral furrow not

continued behind the coxae, the fovea on each side of the furrow inconspicuous,

the piece between the front coxae as wide as the antennal club ; the hind margin

of the prosternum arcuate in the middle; the mesosternal process wider than

a coxa. Venter with two transverse rows of punctures on ventrite 2 (4), and

ventrites 3 and 4 (5 and 6) with a single row and additional punctures at the

sides.

Length: 1-8 mm.; breadth, 0-6 mm.

Upolu: Malololelei, 2,000 ft., 1 g, 22.x1.1924.

This is a somewhat aberrant species, which in its general shape quite

resembles a diminutive Baris ; its tarsal structure is also unusual.

CALANDRINAE.

51. Diathetes buxtoni, sp. n.

¢. Colour black, with the elytra chestnut-brown ; the pronotum shiny,

with a bi-lateral, grey, sericeous stripe; the mesepimeron also with a grey,

sericeous indumentum.

Head moderately shiny, with small, scattered, shallow punctures and with

a fine stria round the posterior margin of the eyes. Rostrum regularly curved,

CURCULIONIDAE. 317

parallel-sided from the base to the insertion of the antennae, there distinctly

narrowed, and thence sub-cylindrical to the apex, which is not dilated ; the basal

portion with fairly numerous, distinct, separated punctures and with a shallow

median stria, which terminates at the extreme base in a very deep, round fovea ;

the cylindrical portion with irregularly distributed smaller punctures dorsally

and laterally in its basal half only; the underside with rather irregular rows

of coarse, subrugose punctures. Antennae with the club almost as broad as long

and distinctly asymmetrical, the outer (or lower) edge being more strongly

angulated. Prothorax broadest at the base and narrowing anteriorly with a

gradual curve, constricted close to the apex, but not tubulate, the constriction

not extending across the dorsum, and the apical margin shallowly sinuate in

the middle; the dorsum shiny, with extremely minute distant punctures in

the basal half, these becoming gradually stronger and denser towards the apex ;

the lateral thoracic stripes reaching the base, but ceasing at some distance

behind the apical constriction and covering scattered punctures that each

contain a very small recumbent seta ; the pleurae with coarse, often somewhat

wrinkled punctures, except in the area above the coxa, where the punctures

are much smaller. Hlytra ovate, widest at the very oblique shoulders and dis-

tinctly narrowing from there to the apex; striae 1-4 very deep and containing

feeble, remote punctures, the outer striae shallow and with more distinct punc-

tures, stria 2 curving strongly inwards at the base, so that interval 2 is there

narrower than the others (except 1), 3 is as broad as 4+-5, and 4 is about as wide

as 6 and narrower than 5; the intervals slightly convex and impunctate,

probably covered normally with dull pruinosity, but partly abraded and shiny

in the type. Legs black, stout; the femora with minute scattered punctures,

which become larger and squamose on the apical fourth, the lower surface

densely punctate and bearing an erect fringe of short, stiff, red setae (probably

a male character only) ; the front tibiae alone with a very short process at the

outer apical angle; only the front coxae with a small tuft of red setae. Sternum:

the prosternum with deep, distant punctures in front of the coxae ; the meso-

sternum with only a few fine punctures on the episterna ; the metasternum with

strong, remote punctures at the sides, dense, fine ones in the median area, and

almost impunctate elsewhere. Pygidium broadly rounded at the apex and fairly

closely set with coarse punctures, each containing a very short recumbent seta.

Length: 13-25 mm.; breadth, 5:75 mm.

Upolu: Apia, 1 3, 5.iv.1924.

318 INSECTS OF SAMOA.

52. Diathetes lyriger, sp. n. (Text-fig. 21).

6. Head and rostrum black ; prothorax black beneath, pale, testaceous

above, with the apical collar black, a large median lyre-shaped black patch

extending from base to apex, and a small black patch on each side in front of

TExt-FIG. 21.—Dnvathetes lyriger, sp. n., 3d.

the middle, which is connected with the inferior black area; the elytra darker

than the pronotum and more or less pruinose, with the suture and humeral

callus somewhat infuscated ; the underside shiny black, with'a large sub-oblong

testaceous patch on each side of the metasternum.

CURCULIONIDAE. 319

Head shiny, with obsolescent punctures and no post-ocular stria. Rostrum

short and regularly curved, very gradually narrowing from the base to the

middle and thence parallel-sided ; the basal part with fine, obsolescent punc-

tures and a shallow median stria that terminates in a large basal fovea; else-

where impunctate ; the underside with two rows of small, very obtuse denticles.

Antennae with the club longer than broad, almost symmetrical, and scarcely

angulated at the sides. Prothorax almost parallel-sided from the base to one-

third, thence gradually narrowed anteriorly and deeply constricted at some

distance from the apex, the constriction being continued across the dorsum ;

the apical portion tubulate and as long as the greatest width of the antennal

club, its front margin being shallowly sinuate in the middle ; the dorsum very

shiny, the punctures everywhere very minute and obsolescent ; the pleurae with

a few larger punctures. Llytra narrowly ovate, widest at the very oblique

shoulders and very gradually narrowing behind; striae 1-4 moderately deep

and with distinct, shallow punctures, the outer striae shallow, stria 2 only slightly

curved inwards at the base, intervals 2, 4, 5, 6 being sub-equal at the base and

3 somewhat broader ; the intervals slightly convex and impunctate, with more

or less dull pruinosity. Legs slender; the coxae and tarsi black; the femora

testaceous, with the base and apex blackish, impunctate, and with a very short,

sparse, fringe of pale setae on the lower surface ; the tibiae testaceous brown

with the base and apex and the dorsal edge blackish, the external apical angle

being produced into a sharp point on every pair; the front coxae without a

tuft of setae. Sternuwm with only a few small, sparse punctures on the proster-

num and at the sides of the metasternum. Pygidiwm broadly truncate at the

apex, the coarse punctures almost concealed by an indumentum, and each con-

taining a short, sub-erect seta, the lateral and apical margins with a dense fringe

of golden setae.

Length: 10-5 mm.; breadth, 4:0 mm.

Upolu: Malololelei, 2,000 ft., 1 g, 28.vi.1924.

53. Cosmopolites sordidus, Germar.

Calandra sordida, Germar, Ins. Spec. nov., p. 299, 1824.

Sphenophorus striatus, Fahraeus, Schoenh. Gen. Curc., viii, pt. 2, p. 251, 1845.

Sphenophorus cribricollis, Walker, Ann. Mag. Nat. Hist., (3) iv, p. 218, 1859.

Upolu: Apia, 2 gg, 7 99, ix.1923; 21 gg, 14 99, from rotten banana

stumps, xi.1924; Tuaefu, 1 9, 16.ix.1923 (Swezey and Wilder).

320 INSECTS OF SAMOA.

Tutuila : Pago Pago, 3 gg, 1 9, ix.—x.1923 (J. Steffany) ; Leone Road, 2 3d,

3 99, 7.ix.1923 ; Fagasa, 2 gg, 1 9, in banana, 8.1x.1923 (Swezey and Wilder).

A pest of bananas; distributed throughout the tropics.

54. Rhabdocnemis obscura, Boisduval.

Calandra obscura, Boisduval, d’Urville’s Voy. de Astrolabe, Ent., 1, p. 448, 1835.

Sphenophorus insularis, Boheman, Eugenies Resa, Ins., p. 148, 1859.

Sphenophorus nudicollis, Kirsch, Mitt. Mus. Dresden, ii, p. 156, 1877.

S. promissus, Pascoe, Ann. Mus. Genova, (2) 1, p. 300 1885 (n. syn.).

S. tincturatus, Pascoe, op. cit., p. 301.

S. beccarit, Pascoe, loc. cit.

S. interruptocostatus, Schaufuss, Hor. Soc. Ent. Ross., xix, p. 204, 1885.

Upolu: Apia, 1 g, 1 9, 14.ix.1923 (Swezey and Wilder), 7 gg, 8 29, v.—xil.

1924; Malololelei, 1 3, 2 99, vi-vwun.1924; Aleipata, 2 99, x1.1924.

Tutuila: Pago Pago, 3 J, 1 9, 20.1x.1923 ; Fagasa, 4 3g, 7 22, in coconut

and sugar-cane, 8.1x.1923 (Swezey and Wilder); Amauli 1 @, 5.ix.1923

(Bryan), 1 3, 6.1x.1923 (Swezey and Wilder).

A common pest of sugar-cane, occurring from Celebes to the Pacific

islands and Australia.

55. Polytus mellerborgi, Boheman.

Sitophilus mellerborgi, Boheman, Schoenh. Gen. Curc., iv, p. 976, 1837.

Calandra remota, Sharp, Trans. Roy. Dublin Soc., (2) iii, pp. 183, 254, 1885.

Polytus mellenborgi, Faust, Ann. Mus. Genova, xxxiv, p. 353, 1894.

Upolu: Apia, 2 gg, 2 2, in rotten banana stem, x1.1924, 1 9, x.1925.

A tropical species ranging from the Seychelles to the Pacific.

56. Calandra oryzae, Linnaeus.

Curculio oryzae, Linnaeus, Amoen. Ac., vi, p. 395, 1763.

Cossonus quadrimacula, Walker, Ann. Mag. Nat. Hist., (3) iv, p. 219, 1859.

Upolu: Apia, 12 gg, 1 9, in oats, iv.1924.

57. Diocalandra taitensis, Guérin.

Calandra tailensis, Guérin, Icon. Régne anim., v, pl. xxxix bis, fig. 4, 1844.

Upolu: Apia, 1 3, vil.1924, 4g, 4 99, in spathe of coconut, x.1924, 6 $3,

2 99, x1.1924; 1 9, v.1925; Lalomanu, 1 9, xi.1924.

Tutuila: Amauli, 4 Jd, 4 29, xi.1923 (Bryan).

Manu’a: Tau, 1 J, 1 9, 27.ix.1923 (Swezey and Wilder).

CURCULIONIDAE. 321

58. Diocalandra frumenti, Fabricius.

Calandra frumenti, Fabricius, Syst. El., 1, p. 488, 1801.

Sitophilus stigmaticollis, Gyllenhal, Schoenh. Gen. Cure., iv, p. 972, 1837.

Sitophilus subsignatus, Boheman, Schoenh. Gen. Curc., iv, p. 973, 1837.

Sphenophorus cruciger, Motchulsky, Etud. Ent., vii, p. 69, 1858.

Calandra punctigera, Pascoe, Ann. Mus. Genova, (2) ii, p. 305, 1885 (n. syn.).

Calandra sechellarum, Kolbe, Mitt. Zool. Mus. Berlin, v, p. 46, 1910.

Tutuila: Amauli, 1 3, 6.1x.1923 (Swezey and Wilder).

This species ranges from Hast Africa (Tanganyika Territory) eastwards to

Papua, but the specimen here recorded is the first that I have seen from any

Pacific island.

COSSONINAE.

59. Dryophthorus muscosus, sp. n. (Text-fig. 22, a).

. Derm black, with patches and tufts of yellowish grey pubescence.

Head with reticulate punctation, the forehead with a median impression

and a patch of very short, erect setae on each side of it; eyes quite flat.

Rostrum parallel-sided from the base to the middle (apart from the usual angular

projection of the lower edge of the scrobes) and thence rapidly widening to the

apex; the apical area very shiny and impunctate, its anterior edge broadly

arcuate with a small median emargination and a small projection on each side

of it; the remainder with dense, matted pubescence concealing the sculpture,

except for an indefinite median impression near the base. Prothorax very

nearly as long as broad, gradually widening from the base, then strongly rounded

beyond the middle, and very deeply constricted near the apex, the constriction

continued on the dorsum and running obliquely backwards to join a deep median

depression at about one-third from the apex ; in the basal half a similar large,

rounded depression on each side ; the rest of the surface with large, sub-reticulate

punctures, which are for the most part hidden by matted pubescence mingled

with short, erect setae ; a complete, narrow, smooth median line. Elytra ovate,

widest before the middle, rounded at the apex, and sub-truncate at the base ;

the striae coarsely punctate, and all the intervals with more or less interrupted

ridges of matted pubescence, those on intervals 3 and 5 higher than the others,

and the major interruption caused by an oblique, bare band running from a

little behind the shoulder to the suture behind the middle; on interval 3 the

ridge is divided into three patches: a small one at the base, a long one before

322 INSECTS OF SAMOA.

and a long one behind the middle; on interval 5 there are three long patches :

near the base, at the middle, and near the apex; on the other intervals the

Text-Fric. 22.—(a) Dryophthorus muscosus, sp. n., 2; (b) D. armaticollis, sp. n., 3.

ridges are more irregularly interrupted ; interval 7 elevated into a high carina

at the apex. |

Length: 3-5 mm.; breadth, 1-5 mm.

Upolu: Malololelei, 2,000 ft., 1 9, vi.1924.

60. Dryophthorus armaticollis, sp. n. (Text-fig. 22, 0).

3. Derm black, with patches and ridges of yellowish grey pubescence.

Head with sub-reticulate punctation and with a very shallow, indefinite,

transverse impression behind the eyes, the forehead with very short, erect setae ;

eyes quite flat. Rostrum parallel-sided from the base to the antennae, there

widening slightly, and again parallel-sided thence to the apex ; the shiny, apical

area shorter than usual, its anterior edge not emarginate but asymmetrical,

CURCULIONIDAE. 323

with a small projection to the right of the middle; the remainder covered

with matted pubescence and with a broad, transverse impression across the

basal half. Prothorax about as long as broad, gradually widening from the

base, then strongly rounded (widest beyond the middle), and very deeply con-

stricted near the apex; on the anterior half of the dorsum a very deep, large,

sub-triangular excavation (with the apex of the triangle direct backwards), the

floor of which is bare, shiny and impunctate; the anterior transverse side of

the triangle bears a broad, truncate, bare process projecting backwards over

the cavity, and the two oblique sides have each in the middle of their length

a small, bare, projecting tooth; the rest of the dorsum with large, sub-reticulate

punctures; the apical margin and a broad area on each side of the cavity

clothed with matted pubescence. LElytra oblong-ovate, widest before the

middle, the sides sub-angulated behind, the apex rather narrowly rounded,

and the base truncate; the striae coarsely punctate, and only the alternate,

dorsal intervals with ridges of matted pubescence: interval 1 with a very

short ridge a little before the middle ; intervals 3 and 5 with the ridges com-

plete, except for a broad, oblique interruption before the middle, and interval 5

elevated into a sharp carina on the declivity ; interval 7 with a much lower

and shorter ridge, which is interrupted before and again behind the middle ;

intervals 8 and 9 each with a short, low ridge before the middle.

Length: 2-5 mm.; breadth, 1-9 mm.

Savaii: Safune, 1 9, 13.v.1924 (Bryan).

Type in the Bishop Museum, Honolulu.

The nearest ally of these two striking species is the Hawauan D. insignis,

Sharp 1878, but in this species the triangular anterior impression on the pro-

notum is shallow and distinctly punctate, having no trace of the remarkable

projections characteristic of armaticollis, and the smooth median line and two

posterior depressions of muscosus are also lacking; the arrangement of the

elytral ridges is very similar to that in armaticollis, but they are borne on well-

marked carinae, that on interval 7 is not interrupted, and there is no tuft on

interval 1.

61. Glyphostethus cancellatus, Marshall.

Proc. Hawati. Ent. Soc., iv, p. 596, 1921.

Upolu: Apia, 1916 (Dr. H. Swale).

This species is not represented in the collections now being dealt with.

324 INSECTS OF SAMOA.

62. Pentarthrum cylindricum, Wollaston.

Trans. Ent. Soc. Lond., (2) v, p. 398, pl. xix, fig. 5, 1861.

Upolu: Apia, 3 specimens, v.1924; 1.1925; Malololelei, 1 specimen,

25.1V.1924,

63. Pentarthrum hirticolle, sp. n.

g. Piceous to black, the anterior part of the rostrum, the lateral margins

of the elytra, the antennae and legs, red-brown.

Head very deeply constricted immediately behind the eyes, which are

prominent ; the globular vertex with a few very minute punctures, the fore-

head almost on a level with the inner margin of the eyes, strongly and closely

punctate, without any median fovea. Rostrum rather stout, gently curved,

slightly widening from the base to the middle, parallel-sided beyond; the

punctures more or less longitudinally confluent at the base (especially at the

sides), becoming rapidly smaller and sparser in front. Prothoraz a little longer

than broad, rounded at the sides, widest far behind the middle, broadly con-

stricted at the apex, the constriction continued shallowly across the dorsum,

which is markedly flattened and strongly and closely punctate throughout, the

interspaces being narrower than the punctures, which become denser laterally

and sub-confluent on the pleurae ; the sides of the pronotum thinly clothed with

rather long, fine, recumbent setae directed obliquely backwards. Elytra some-

what flattened, a little broader than the prothorax, deeply striate, the punctures

large, separated and wider than the striae; the intervals each with a row of

fine spaced punctures, those on interval 1 much denser, interval 9 only slightly

costate at the apex; minute recumbent setae (not easily seen) at the sides

and apex. Underside strongly and closely punctate.

Length : 2-0-2-3 mm.; breadth, 0-6-0-7 mm.

Upolu: Malololelei, 1 ¢ (type), iv.1924, 1 g, vi.1924; Apia, 1 3, v.1924.

64. Pentarthrum naucum, sp. n.

. Chestnut-brown, moderately shiny, bare.

Allied to P. hirticolle, sp. n.; but much narrower, more finely punctate

and not flattened dorsally. Differing also in the following characters: Rostrum

longer, more slender and almost straight. Prothorax distinctly longer than

broad, the anterior constriction not continued across the dorsum; the punc-

CURCULIONIDAE. 325

tures much smaller, not wider than their interspaces (except near the base),

and becoming finer anteriorly ; no lateral setae. Hlytra not broader than the

prothorax, with the dorsal punctures not wider than the striae, the intervals

without setae.

Length: 2:4-2-5 mm.; breadth, 0-6 mm.

Upolu: Apia, 2 29, xi.1924.

From the two new species of Pentarthrum here described, P. cylindricum

differs in lacking the very deep constriction immediately behind the eyes; the

prothorax also is almost cylindrical, and joint 3 of the tarsi is not wider than 2.

Dynatopechus, gen. nov.

Head sub-conical, not constricted, the forehead narrower than the base of

the rostrum; eyes widely separated beneath. Rostrwm with the antennae

inserted at the middle; scrobes oblique, the upper edge reaching the lower

margin of the eyes. Antennae stout, with the funicle 5-jointed, the basal joint

sub-triangular and not much longer than broad, jot 2 transverse and only

slightly larger than 3; the club ovate, slightly compressed, distinctly 4-jointed,

the basal joint sparsely pubescent. Prothorax sub-conical, shallowly bisinuate

at the base. LHlytra as wide as the prothorax, less than twice as long as broad,

with ten deep striae, the tenth being entire, and the intervals with one edge

narrowly carinate, the outer edge on intervals 1-3 and the inner edge on the

remainder. Legs short and very stout, the front femora being unusually

inflated ; the tibiae not much longer than the tarsi (4: 3), dilated from base to

apex, with a very stout uncus (especially on the front pair), and a sub-median

sharp tooth on the lower edge of the front pair; the tarsi short and broad, joint

2 twice as broad as long, 3 strongly dilated and deeply bilobate, and 4 parallel-

sided and exceeding 3 by only half its own length ; trochanters without a seta.

Sternum with the front coxae nearly as widely separated as the median pair,

the metepisterna very narrow. Venter with the inter-coxal process truncate,

ventrite 2 laterally as long as 3+4.

Genotype, Dynatopechus rubronotatus, sp. n.

Amorphocerus aureopilosus, Fairm. 1849, must undoubtedly be referred to

this genus; I have seen several specimens from Fiji which appear to agree

adequately with Fairmaire’s description.

326 INSECTS OF SAMOA.

An isolated genus, the species of which superficially resemble small

specimens of Calandra linearis, Hbst. The salient characters are the finely

carinate and pubescent elytra, unusually large front femora, 5-jointed funicle,

and the short, broad tarsi with the deeply lobate third joint, which is spongy

beneath.

65. Dynatopechus rubronotatus, sp. n. (Text-fig. 23).

2. Colour piceous, the elytra with an indefinite reddish patch near the

base, between striae 1 and 3, a similar one slightly behind the middle between

striae 2 and 5, a small humeral spot, and the lateral margin narrowly reddish.

Head with fine separated punctures

all over the vertex, the forehead with

slightly larger closer punctures and a very

small median fovea, the lower surface

with several deep curved transverse

striae ; eyes moderately convex, a little

longer than the temples. Rostrum much

shorter than the pronotum (5:8),

moderately stout, sub-cylindrical, slightly

curved, finely and closely punctate, the

punctures becoming larger at the extreme

base. Antennae red-brown; the funicle

eradually widening distally, joints 3-5

strongly transverse, more than twice as

broad as long; all the joints of the club

with an apical fringe of pale pubescence.

Prothorax slightly longer than broad,

widest close to the base, rapidly narrow-

ing in front with a slight curve, strongly

constricted near the apex, the constric-

tion shallowly continued across the disk; the dorsum somewhat flattened,

finely and closely punctate, with an abbreviated smooth median line, the

interspaces in the middle of the disk as wide as the punctures, which become

much denser, but not actually confluent, laterally, each puncture with a

short, recumbent, golden seta; the pleurae with the punctures for the most

part longitudinally confluent. Elytra parallel-sided to three-fifths, jointly

TEext-FIc. 23.—Dynatopechus rubronotatus,

sp. ni,’ 9.

CURCULIONIDAE. 327

rounded at the apex, with the deep, broad striae catenulately punctate ; the

intervals flat (apart from the carinate edges), a little wider than the striae, and

each with a row of close, strong punctures, which are duplicated towards the

base on intervals 2 and 3, each puncture with a short, recumbent, golden seta,

the carinae more prominent laterally and at the apex. Legs closely and

strongly punctate; the front femora almost semicircular in shape; the upper

edge being very strongly arched; the tibiae with the punctures longitudinally

confluent. Underside finely and evenly punctate throughout.

Length: 3-2 mm.; breadth, 1-1 mm.

Upolu: Apia, 1 9, xu.1924.

The species provisionally identified as D. aureopilosus, Fairm., is usually

red-brown above with a broad median blackish stripe on the pronotum, but

four indefinite blackish patches sometimes occur on the elytra, and the head

and underside may be black ; the rostrum is much broader, and the punctures

on the basal half are longitudinally confluent; the greatest width of the pro-

thorax is at about one-third from the base, and on the lateral third of the

dorsum the punctures are entirely confluent, the interspaces appearing like

broken sinuous ridges; and the golden setae on the pronotum and elytra are

longer and more conspicuous. The species was originally recorded from Tahiti.

Gitonischius, gen. nov.

Head sub-conical, the eyes separated from the prothorax by more than their

own length. Rostrum sub-cylindrical, the scrobes curving down to the lower

anterior margin of the eyes. Antennae inserted at about the middle of the

rostrum ; the funicle 5-jointed, only the basal joint elongate ; the club ovate,

3-jointed. Prothorax sub-cylindrical, as broad at the apex as at the base.

Elyira sub-cylindrical, distinctly wider than the prothorax, with prominent

sub-rectangular shoulders, and stria 10 abbreviated. Legs slender, the third

tarsal joint not lobate. Underside with the front coxae very closely approxi-

mated ; ventrite 1 longer than 2, and 2 a little longer than 3+-4.

Genotype, Gitonischius tubicollis, sp. n.

Most nearly allied to Microtrupis, Champ. 1914, but differing from this

and from such other related genera as Pentarthrum, Woll. 1854, and Steno-

pentarthrum, Champ. 1914, in its sub-contiguous front coxae, cylindrical pro-

thorax, and unconstricted head.

328

INSECTS OF SAMOA.

66. Gitonischius tubicollis, sp. n. (Text-fig. 24).

Colour uniform piceous brown, not very shiny.

Head about as long as the width across the eyes, narrowing from base to

apex, with the sides straight, the distance from an eye to the prothorax about

Z4i o

ANDADS S29,

Pa Mestre

SS SOS

04)

1a)

(é)

(2)

Text-FIG. 24.—Gitonischius

tubrcollis, sp. n.

twice the length of the eye; the vertex with fine

separated punctures ; the forehead similarly punctate,

slightly flattened in the middle, without any median

fovea. Rostrum gently curved, not dilated at the

apex, the punctures on the basal half like those on

the head, but becoming indistinct anteriorly. Antennae

with the apical half of the scape clavate; the funicle

with joint 1 as long as the next three together, 2 as

long as broad, the rest transverse. Prothorax sub-

cylindrical, a little longer than broad, slightly rounded

at the sides, widest at or before the middle, and with

a narrow, shallow constriction close to the apex; the

base truncate and not marginate; the dorsum even,

minutely aciculate, and set throughout with fine,

distant punctures, which are not larger than those on

the head. Scutellum small, rounded. Elytra sub-

cylindrical, parallel-sided from the shoulders to the

middle then gradually narrowed to the apex, and

truncate at the base, the posterior declivity rather

steep ; the striae very shallow, with small, fairly close

punctures, which become obsolescent on the declivity ;

the intervals about as wide as the striae, impunctate. Underside opaque,

aciculate, with small, shallow, distant punctures, each containing a minute,

recumbent seta.

Length: 1-5-1-6 mm. ; breadth, 0-3 mm.

Tutuila: Fagasa, 17 specimens, in nutmeg tree, 9.1x.1923 (Swezey and

Wilder).

Type in the Bishop Museum, Honolulu.

CURCULIONIDAE. 329

67. Stenotrupis myristicae, sp. n.

3. Colour uniform reddish brown, rather dull.

Head distinctly longer than broad, of about the same length in the two

sexes, but slightly broader in 9, strongly constricted at the base, the stricture

being as deep dorsally as it is laterally ; the distance between the eye and the

constriction about twice the length of the eye; the dorsum convex longitu-

dinally, with close, shallow, sub-reticulate punctation ; the forehead flattened,

without a median fovea, distinctly narrower than the base of the rostrum.

Rostrum slightly longer than the head (including the basal constriction) in 3

(11 : 13) and nearly twice as long in Q (11: 20), with a distinct lateral angula-

tion above the insertion of the antennae and thence gradually widening to the

apex, broader and with close, shallow, rugulose punctation in g, narrower in 9

and with much finer punctation beyond the antennae. Antennae with joint 2

of the funicle longer than broad; the club rather narrowly elliptical. Pro-

thorax longer than broad (4:3), pyriform, widest at one-third from the base,

shallowly constricted quite close to the apical margin, and with strong, close,

subreticulate punctation throughout. lytra of the usual narrowly elongate

form, parallel-sided from the shoulders to about the middle of ventrite 2, with

shallow striae containing strong, close punctures ; the intervals narrower than

the striae, very finely rugulose, and bearing rows of minute, sloping, pale setae

on the apical third, the sutural margin sub-carinate from near the base to the

top of the declivity. Legs with the front tibiae not mucronate at the inner

apical angle; joint 3 of the tarsi distinctly broader than 2. Underside sub-

opaque, minutely pubescent, and with fine separated punctures.

Length: 2:0-2:7 mm.; breadth, 0-5-0:6 mm.

Tutuila: Fagasa, gg, 29, 9.1x.1923, on nutmeg tree (Swezey and Wilder).

Type in the Bishop Museum, Honolulu.

This species is chiefly characterised by the depth of the cephalic constric-

tion dorsally and the elevation of the elytral suture. S. tarsalis, Champ., from

the Seychelles, closely resembles this species in colour and general facies but

differs, inter alia, in its finer punctation, the punctures on the upper surface

being separated at least by a space equal to their own diameters ; the very deep

prothoracic constriction, which is twice as far from the apex ; and by the much

more dilated third tarsal joint.

The genotype, S. crassifrons, Woll., is a larger, darker insect, with a simi-

Iv. 5 6

330 INSECTS OF SAMOA.

larly shaped prothorax, but again much more finely punctate ; joint 2 of the

funicle is not longer than broad ; the front tibiae are strongly mucronate, and

joint 3 of the tarsi is not broader than 2.

68. Microtribus longiceps, sp. n. (Text-fig. 25).

Q. Colour dark piceous, with the legs and antennae paler.

Head about as long as the width across the eyes, which are oval and

somewhat prominent, gradually widening from the eyes to the base without any

constriction, finely alutaceous, strongly

and closely punctate, the punctures

becoming smaller and sparser towards

the vertex, which is not globose; the

forehead slightly flattened, with an

inconspicuous median fovea. Rostrum

elongate, about three-fourths the length

of the pronotum, almost straight in the

basal half and rather steeply declivous in

front, parallel-sided from the base to the

middle and somewhat broader in the

apical half, closely punctate throughout,

the punctures becoming smaller and

longitudinally confluent —_ anteriorly.

Antennae with the scape a little longer

than the funicle, the latter with joint 2

almost as long as 3+4, 3 to 5 transverse

and equal. Prothorax slightly longer

than broad, strongly rounded at the

sides, widest at the middle, deeply and

Bera narrowly constricted quite close to the

TES eet BPs LEROICEES 8B apex, the constriction continued shallowly

am across the dorsum, which is closely set

with large, deep punctures that are much wider than the interspaces ; each

puncture with a long, recumbent, pale seta. Scutellum minute. Hlytra narrower

at the shoulders than the widest part of the prothorax, very slightly widening

to behind the middle, truncate at the base, and jointly rounded at the apex ;

CURCULIONIDAE. 331

the striae broad and distinct throughout, containing strong, close rounded

punctures, but stria 7 present only in the apical two-thirds; the intervals

rather narrower than the striae and impunctate, interval 9 not elevated at the

apex. Legs with the femora shiny and sparsely punctate ; the tibiae impunctate,

thinly pubescent and with a fine spine at the inner apical angle. Venter

with coarse, diffuse punctation.

Length: 2-5-2-6 mm.; breadth, 0-7 mm.

Tutuila: Amauli, 1 g, 1 9, 6.1x.1923 (Swezey and Wilder).

Type in the Bishop Museum, Honolulu.

Differs from the two New Zealand species, WM. huttoni, Woll., and M.

pictonensis, Shp., in its longer sub-quadrate

head, larger and much more prominent eyes,

and much coarser punctation ; also in having

the antennae inserted distinctly in front of

the middle and with the scape longer than the

funicle, and in the presence of a spine atthe ==

inner apical angle of the tibiae. \\

ae (>

Ratry CD

69. Phloeophagosoma carinirostre, sp. n.

(Text-fig. 26).

o?. Colour piceous black, rather shiny,

quite bare; the apical half or three-fourths

of the rostrum red-brown; the elytra with

a red-brown stripe between striae 4 and 6,

invading the whole apex, and extending more

or less distinctly across the base, but the red-

brown markings occasionally more extensive

or reduced to no more than a small humeral

patch.

Head with a well-marked constriction

distant from the eye about three-fourths the

longitudinal diameter of the eye; the anterior

d TExT-FIG. 26.—Phloeophagosoma

part moderately convex, with fine, strong COO, a oO

punctures separated by at least their own

diameters, without any frontal fovea ; the eyes almost flat. Rostrwm much shorter

than the pronotum in ° (3: 5), slightly longer in than in 9, curved, rather stout,

332 INSECTS OF SAMOA.

narrowing from the base to the middle with a slight curve, thence parallel-sided

to the apex; the punctures at the base like those on the forehead but rapidly

diminishing in size and density anteriorly, especially in 9 ; the scrobes extending

from the base to the middle () or beyond it (g), their upper edge narrowly

carinate right up to the eye, with a stria beside the carina above. Antennae

with the second joint of the funicle transverse. Prothorax sub-pyriform, widest

behind the middle, gently rounded at the sides, gradually narrowing in front,

and shallowly constricted at the apex, the constriction continued faintly across

the disk ; the dorsum flattened, finely and evenly punctate, the punctures being

usually separated by more than their own diameters, and without any smooth

median line. lytra a little wider than the prothorax, gradually narrowing in

the posterior half, distinctly striate, the punctures separated, broader than

the striae and diminishing behind; the intervals each with a row of minute

punctures.

Length : 2-8-3:0 mm.; breadth, 0-7-0-8 mm.

Upolu: Vailima, 1 ? (type), 3.vi.1924; Malololelei, 1 3, 1 9, vi.1924.

Tutuila: Pago Pago, 1 g, 2 99, 20, 24.1x.1923 (Swezey and Wilder).

Savaii: Salailua, 1 ¢, 22.v.1924 (Bryan).

The lateral stria and carina on the rostrum will distinguish this species

from its congeners.

70. Pseudolus longulus, Boheman.

Rhyncolus longulus, Boheman, Hugenies Resa, Ent., p. 149, 1859.

Pseudolus lonqulus, Boh., Sharp, Trans. R. Dublin Soc., (2) 111, p. 190, pl. v, fig. 33, 1885.

Upolu: Apia, 2 specimens, 1x.1923 (Swezey and Wilder); 4 specimens,

x1.1924-1.1925 (Buxton and Hopkins).

Tutwla: Pago Pago, 3 specimens, 1x.1923 (Swezey and Wilder).

71. Oxydema fusiforme, Wollaston.

Trans. Ent. Soc. Lond., 1873, p. 632.

Pseudolus hospes, Perkins, Fauna Hawati., 11, p. 149, 1900.

Samoa: two specimens, without exact data. °

72. Oxydema simplex, sp. n.

$9. Colour rather shiny black, the elytra often more or less tinged with

red-brown ; antennae and legs red-brown.

CURCULIONIDAE. 333

Head with the globular shiny vertex separated from the anterior part by a

shallow transverse impression and with only a few scattered punctures along its

front margin; anterior part with strong separated punctures throughout, the

distances between the discal ones being at least equal to their own diameter ;

frons with a deep median fovea. Rostrum as long as a front femur, propor-

tionately longer and more curved in g than in Q, subparallel-sided from the base

to the antennae, there rather abruptly dilated, and then slightly widening to

the apex, closely and strongly punctate throughout, the punctures becoming

smaller and denser anteriorly. Prothorax longer than broad, gently rounded

at the sides, shallowly constricted near the apex, the dorsal continuation of the

constriction being feeble and often obsolete, with strong, separated punctures

throughout and without any obvious median impunctate stripe, the dorsal

punctures being largest at the base and gradually diminishing anteriorly ;

pleurae more coarsely and much mote closely punctate than the dorsum. Elytra

elongate, gradually narrowing behind the middle, and roundly sub-truncate at

the apex; the striae distinct and containing strong, close punctures, which

scarcely diminish behind ; the intervals slightly convex, and each with a single,

often irregular, row of minute punctures.

Length : 4:5-6-0 mm. ; breadth, 1-1-1-6 mm.

Upolu: Tafua Volcano, 1 g, 1917 (Dr. H. Swale—type) ; Apia, 4 33, 3 99,

15.1x.1923 (Swezey and Wilder); 1 ¢, 1 Q, ii.1924 (Buxton and Hopkins) ;

Malololelei, 1 9, iv.1924.

Very closely allied to O. fusiforme, Woll., which differs in having the head

and rostrum more coarsely and closely punctate ; the prothorax is much more

strongly constricted near the apex, the constriction being conspicuously con-

tinued across the dorsum, and the punctures are of more even size throughout

and leave a distinct, though ill-defined, abbreviated, median impunctate stripe.

73. Aphanocorynes savaiiensis, sp. 0.

6. Rather dull black, bare.

Head strongly constricted laterally, but the constriction not continued

across the dorsum ; the vertex with a few small, sparse punctures ; the anterior

part strongly punctate, the interspaces generally about as wide as the punctures,

with a very small median fovea; the space between the eye and the constric-

tion nearly double the longitudinal diameter of the eye. Rostrum nearly twice

334 INSECTS OF SAMOA.

as long as broad, quite straight dorsally from the base to three-fourths, then

gently sloping to the apex, narrowing from the base to the deep excision above

the antennae, and very slightly widening from there to the apex, strongly punc-

tate, the punctures being rather smaller and denser than those on the head and

becoming finer at the apex; a dense row of erect setae on the margin of the

submentum. Antennae piceous, the club very slightly paler ; the scape extend-

ing beyond the hind margin of the eye; joints 2-7 of the funicle equal,

very short, at least three times as broad as long. Prothorax longer than broad

(4: 3), widest close to the base, thence gradually narrowing anteriorly with a

shght curve, strongly constricted near the apex, the constriction continued

shallowly across the dorsum, and also deeply constricted at the base, leaving

a small, projecting basal angle ; the dorsum flattened, strongly punctate, the

punctures being separated for the most part by about their own diameters, but

much denser on all the margins and the

pleurae. lytra of the usual elongate form,

but somewhat more flattened on the disk ;

the punctures on the disk strong and

much wider than the striae, so that the

edges of the intervals are crenulated ; the

intervals uneven, and each with a well-

marked row of punctures, interval 9 sub-

costate at the apex. Venter of 3 with two

widely separated pairs of erect setae on the

oD,

DOD

posterior margin.

Length: 4:7 mm.; breadth, 1 mm.

Savail: 1 3, 11.1913.

O2222H00%

2222000090

ece

2200

lee)

74. Aphanocorynes humeralis, sp. n. (‘Text-

fig. 27).

$2. The description of A. savaiiensis,

sp. n., applies to this species except in the

following particulars :—

Head with the small median fovea

even less distinct, and the space between

the eye and the constriction equal to the longitudinal diameter of the eye.

Rostrum with the anterior part almost parallel-sided and not dilated at the apex ;

PCONDOVO OT UCUOD DVO STOTT DNDSSOOT00

TEext-FIG. 27.—Aphanocorynes humeralis,

sp: n., d-

CURCULIONIDAE. 335

rostrum of 9 distinctly shorter than that of 3, and the bristles on the submentum

reduced to about four. Antennae with the club much paler, the scape reaching

only to the hind margin of the eye. Elytra with a small red-brown spot on the

shoulder. :

Length: 2-9-3-6 mm.; breadth, 0-6-0-8 mm.

Upolu: Apia, 1 3, x1.1924 (type), 1 gy, 1.1925.

Tutuila: Amauli, 1 g, 2 99, 5-6.1x.1923, and Pago Pago, 1 J, 24.1x.1923

(Swezey and Wilder).

The two foregoing species of Aphanocorynes differ from all the Australian

species known to me in the following characters: The general punctation is

much coarser; the cephalic constriction is stronger and situated further back ;

the second funicular joint of the antennae is much shorter than the first.

75. Notiosomus cervicalis, sp. n.

32. Colour piceous, bare.

Head distinctly constricted at one-third from the base and parallel-sided

from there to the eyes, which project somewhat laterally ; the vertex impunc-

tate or with a few minute punctures, the anterior part with strong punc-

tures, which are mostly separated by a space equal at least to their own

diameters; the forehead slightly depressed and with a deep median fovea.

Rostrum more than twice as long as broad in 4, distinctly shorter in 9, but

otherwise similar; parallel-sided from the base to the antennae (which are

inserted behind the middle), and there rather abruptly dilated, then very slightly

widening to the apex; the punctures at the base like those on the head, but

becoming much smaller and denser anteriorly, those just in front of the eyes

larger, shallow and confluent. Prothorax much longer than broad in ¢ (13:9),

gently rounded at the sides, widest at about one-third from the base ; shorter

and broader in 9 (11: 9-5), more rounded laterally, and widest at about two-

fifths from the base; the dorsum with strong punctures throughout, mostly

separated by the length of their own diameters or more. Llytra elongate,

distinctly wider at the shoulders than the base of the prothorax ; the shallow

striae with large, round, separated punctures, the intervals about as wide as the

striae, and each with a row of fine, spaced punctures.

Length: 4-5-5:7 mm.; breadth 1-0-1-2 mm.

Upolu: Apia, 5 gg, 1 9, 15.1x.1923 (Swezey and Wilder).

336 INSECTS OF SAMOA.

Type in the Bishop Museum, Honolulu.

Closely related to N. major, Woll. 1873, from Queensland, which differs

from it in the following characters: The cephalic constriction is less marked,

the forehead is not depressed, and the eyes do not project beyond the lateral

outline of the head ; the prothorax is less elongate (12:5: 10 in 9), much more

rounded at the sides, widest at about the middle, with the sub-apical constriction

more abrupt, and with the punctures much denser on the disk ; the antennae

are inserted at the middle of the rostrum.

76. Cossonus platyrrhinus, sp. n. (Text-fig. 28).

dg. Piceous black, moderately shiny, the rostrum piceous, and the last

tarsal jomt honey-coloured.

Head rather deeply constricted laterally behind the eyes, the constriction

BOS oes

sate

RIT

Coe Ss

POU Satere

Bote

py?

SHS 5 25 5

SASS DSGOCOSUIISS 8

«.

TEXT-FIG. 28.—Cossonus platyrrhinus, sp. n., 6; a, mner lateral view of front tibia.

continued broadly but very shallowly across the head; the vertex with fine,

distant punctures; the forehead with larger, unevenly distributed punctures

and with a very broad, deep, median sulcus, which is continued on the basal

CURCULIONIDAE. 337

half of the rostrum; the eyes large, moderately convex. Rostrum unusually

short and broad, shorter than the head, about as long as broad, parallel-sided

in the basal half and somewhat dilated at the apex ; the dorsum with shallow,

scattered punctures (smaller than those’ on the forehead), in the basal half

sloping laterally and with a broad, deep, median sulcus, in the apical half flat-

tened and with a broad, shallow, discal depression. Antennae very stout, joint

1 of the funicle triangular and about as long as broad, the remainder strongly

transverse and gradually widening distally. Prothorax as long as_ broad,

moderately rounded at the sides, widest behind the middle, moderately con-

stricted at the apex, the constriction being shallowly and obliquely continued

into the median dorsal impression ; the base bisinuate and narrowly marginate ;

the dorsum set throughout with large, oval punctures, with a broad, shallow,

median depression from the base to the apical constriction, containing in the

basal half a large median, pear-shaped, impunctate area, the narrow end of which

is continued as a carina to the base; the large, triangular, apical area smooth,

with small scattered punctures; on the lateral areas the punctures are but

little coarser than those on the disk. Elytra oblong-ovate, about twice as long

as broad, with broad, deep striae containing large, close punctures that do not

diminish much behind, but striae 9 and 10 becoming merely rows of punctures

in the middle; the intervals narrower than the striae, and each with a row

of minute punctures, interval 9 becoming broadly costate at the apex. Legs

very stout and with fine, sparse punctures ; the posterior pairs of femora dis-

tinctly pedunculate; the front tibiae very broad, deeply excavated behind,

and with a stout tooth on the lower edge above the apical angle.

Length: 6 mm.; breadth, 1-8 mm.

Upolu: Malololelei, 1 3, 24.11.1924.

This species most nearly resembles C. bisulcatus, Champ. 1909, from Panama,

and is characterised by its unusually short and broad rostrum, the deep sulcus

on the forehead and base of the rostrum, and the strongly dentate front tibiae.

77. Cossonus dentipes, Marshall.

Proc. Hawai. Ent. Soc., iv, p. 597, 1921.

Upolu: Apia, 2 gg, 2 29 (Dr. K. Friedrichs).

Tutuila: Pago Pago, 10 gg, 20 99, 21.ix.1923.

In the original description the intervals on the elytra are described as

being not narrower than the punctures ; for “ punctures ”’ read “ striae.”

338 INSECTS OF SAMOA.

78. Cossonus limbaticollis, Marshall.

Proc. Hawaii. Ent. Soc., iv, p. 598, 1921.

Tutuila (Dr. Kellers). .

This species does not appear to be represented in the material before me.

In the original description the punctures on the vertex of the head are stated

to be more “ distinct” ; this is a misprint for “ distant.”

79. Cossonus quaerens, sp. n.

Colour shiny black, the apex of the rostrum often piceous; the elytra

black, with a rather indefinite, yellowish-brown stripe on each, usually

restricted between striae 1 and 6 near the base and between 1 and 4 posteriorly,

but ceasing before the declivity; sometimes the brown stripes are much

darkened and indistinct, so that the elytra appear to be generally piceous.

Head slightly constricted behind the eyes, which are feebly convex; the

vertex globose, shiny and with a few minute punctures; the forehead trans-

versely convex, with rather larger but sparse punctures and a small median

fovea. Rostrum short, about one-third the length of the pronotum, parallel-

sided from the base to the middle and only slightly wider in the apical half,

gently curved dorsally, and with uneven, fine punctation. Pronotuwm longer

than broad (5:4), gently rounded at the sides, widest far behind the middle,

strongly constricted at the apex, the constriction continued feebly across the

dorsum ; the base bisinuate, with a small, strongly punctate, transverse impres-

sion on each side of the median projection; the dorsum with an undefined,

broad, median, impunctate stripe from the base to about three-fourths, else-

where with widely spaced, strong punctures, varying somewhat in size and

distribution, but the admedian ones usually larger than the others. Elytra

sub-oblong, elongate, parallel-sided from the shoulders to three-fourths ; the

striae shallow, especially at the sides, containing fairly close oval punctures

which gradually diminish behind ; the intervals about as wide as the striae and

entirely impunctate.

Length: 3-4-3-6 mm. ; breadth, 0-9-1-0 mm.

Upolu: Apia (type), 5 specimens (Deutsch. Ent. Inst.).

Savan: Salailua, 1 specimen, 19.v.1924 (EK. H. Bryan).

CURCULIONIDAE. 339

794. Cossonus quaerens afonus, subsp. n.

Differs from the typical form in the following particulars: The brown

colouring has invaded the whole elytra, except the suture, which is indefinitely

darker or blackish, and sometimes the extreme lateral margins; the prothorax

is slightly wider proportionately, and its greatest width is only a little behind

the middle, the punctures being notably smaller and the impunctate, median

stripe less regular.

Tutuila: Afono, 16 specimens, 25.1x.1923 (Swezey and Wilder).

Type in the Bishop Museum, Honotulu.

80. Proéces praeustum, sp. n.

32. Red-brown; the head, base of the rostrum, pronotum and the

posterior half of the elytra (to a variable extent) blackish ; the antennae and

legs ferruginous.

Head distinctly constricted immediately behind the large convex eyes,

with the constriction continued shallowly across the dorsum; the forehead

closely punctate, without any median fovea. Rostrum of 3 much shorter than

the pronotum (4:5:7), rather stout, curved, sub-cylindrical, parallel-sided,

with the punctures rather finer than those on the forehead, becoming smaller

in front and more or less confluent laterally near the base ; in Q, slightly longer,

with the punctures rather finer and sparser towards the apex. Prothorax some-

what longer than broad, sub-conical, gently rounded at the sides, widest far

behind the middle, shallowly constricted at the apex, and excavated laterally

in front for the reception of the large front femora; the dorsum finely and

closely punctate throughout except for a very short median impunctate line.

Elyira very slightly narrower than the prothorax, elongate, parallel-sided to far

beyond the middle ; the striae rather deep, containing shallow distant punctures

that do not diminish behind and are wider than the striae ; the intervals broader

than the striae, each with a row of close minute punctures, intervals 7 and 9

jointly costate at the apex.

Length: 3-1-3-5 mm.; breadth, 0-8-0-9 mm.

Tutuila: Pago Pago, 1 3, 10.1x.1923 (Swezey and Wilder—type).

Savai: Safune, rain forest, 2,000-4,000 ft., 1 9, 9.v.1924 (Bryan).

Type in the Bishop Museum, Honolulu.

340 INSECTS OF SAMOA.

Very close to P. silvestris, Kolbe 1910, from the Seychelles, which differs,

iter alia, in having the pronotum red-brown and without any median

impunctate line, the striae on the elytra wider and not exceeded by the con-

tained punctures, and intervals 7 and 9 not costate at the apex.

Mystrorrhinus, gen. nov.

Head, globose, strongly constricted immediately behind the eyes, which are

shortly and transversely ovate and very prominent; the forehead as broad as

the base of the rostrum. Rostrwm very broadly spatulate at the apex in 3,

very long and slender in 9; the antennae inserted at the middle in 9 and far

beyond it in 4, the point of insertion not visible from above, and the scrobes

passing rapidly beneath the rostrum and continued deeply to the base ; the sub-

mentum bearing two long, sub-erect setae in both sexes. Antennae with the

scape somewhat curved and strongly clavate, longer and more slender in Q ;

funicle with 7 joints. Hlytra with stria 10 uniting with 9 behind the middle.

Legs: trochanters without a seta; the tibial uncus comparatively small and

inconspicuous, especially on the posterior pairs, the front tibiae hardly sinuate

on the inner edge ; joint 3 of tarsus much broader than 2 but not bilobate.

Underside : space between the front coxae about two-thirds the width of a coxa,

that between the median coxae rather wider than a coxa; the abdominal

process comparatively narrow, rounded.

Genotype, Mystrorrhinus dimorphus, sp. n.

This is a somewhat isolated genus which is not easy to place satisfactorily

in the absence of any classification of the Cossoninas, but it might come pro-

visionally near Proéces and Catolethrus. The globose head with the marked

constriction behind the very prominent eyes makes the latter appear as though

they were situated on the base of the rostrum. The triangularly spatulate

rostrum in the 3 is also an unusual feature, and, moreover, this apical dilata-

tion varies, being much broader in some individuals than in others, whereas

the rostrum of the female is rather exceptionally long and slender throughout

(text-fig. 29).

CURCULIONIDAE. 341

81. Mystrorrhinus dimorphus, sp. n. (Text-figs. 29, 30).

$2. Rather shiny, piceous, with the pronotum sometimes blackish, bare,

except for a few fine sparse erect setae, especially on the apical third of the

elytra.

Head with the globular portion very sparsely and finely punctate and

separated from the forehead by a deep, transverse incision, its lower surface

transversely striolate ; on each side of the base of the forehead two fine, erect

setae, the inner ones being longer than the outer. Rostrum (text-fig. 29) of J

Trxt-FIc. 29.—Head of Mystrorrhinus dimorphus, sp. n.: a, large 3; b, 23 ¢, small g.

neatly as long as the pronotum (4:5:5), gently curved, gradually narrowing

from the base to beyond the middle, then rapidly and triangularly dilated at

the apex (the width of the dilatation varying in different individuals), and

with the whole dorsum rather strongly and closely punctate; rostrum of 2

longer, as long as the pronotum, more curved, very slender, sub-cylindrical ;

slightly narrowing from the base to the middle, where there is a small dilata-

tion above the insertion of the antennae, and gradually widening again to the

apex, which is about as broad as the base, the dorsal punctation being notably

finer and sparser than in g§. Antennae ferruginous, with the scape reaching the

middle or base of the eye (beneath) and bearing sparse setae ; the funicle with

jot 1 as long as 2+3, 2 as long as broad, the remainder transverse and

342 INSECTS OF SAMOA.

gradually widening distally. Prothorax a little longer than broad (5: 4:5)

widest not far from the base, rapidly narrowing behind (the base being only

slightly broader than the apex) and more gradually

in front, strongly constricted close to the apex,

the constriction being continued across the dorsum

in a backward curve ; the dorsum flat, with strong,

even punctures throughout, mostly separated by

about their own diameters, except on the discal

area in front of the apical constriction, which is

entirely impunctate and shiny; normally a few

small sub-erect setae at the anterior apical angles.

Elytra widest behind the shoulders, and there as

wide as the prothorax, very gradually narrowing

behind, and rather narrowly rounded at the apex ;

the striae rather broad and deep on the disk but

very shallow laterally, containing closely set

punctures that encroach somewhat on the intervals

and do not diminish behind, striae 6-8 usually

somewhat confused; the discal intervals not

narrower than the striae, sometimes rather uneven,

and each with a row of distinct punctures ; on the

apical third a few sparse erect setae.

Length : 1-5-1-9 mm. ; breadth, 0-5-0-6 mm.

Upolu: Apia, 5 gg, 6 99, 12.ix.1923 (Swezey and Wilder—type).

Tutuila: Amauli, 1 3, 6.ix.1923 (Swezey and Wilder).

Type in the Bishop Museum, Honolulu.

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Text-Fic. 30.—Mystrorrhinus

dimorphus, sp. n., large 3.

82. Rhyncolosoma subsignatum, sp. n. (Text-fig. 31).

39. Colour testaceous brown to blackish brown, the elytra with an inde-

finite paler testaceous band across the base and a large patch of the same type

occupying most of the posterior declivity.

Head sparsely punctate, the forehead slightly flattened, with much larger

and closer punctures and a large median fovea; the eyes narrow, elongate,

flattened. Rostrum rather stout, about as long as a front femur, parallel-sided,

gently curved, very similar in the two sexes, slightly longer and a little less

CURCULIONIDAE. 343

strongly punctate in 9, not setose beneath in 3; the punctures comparatively

strong and close at the base and becoming gradually finer and sparser in front.

Antennae inserted well beyond the middle of the rostrum, with the scape com-

paratively slender, not reaching the eye. Prothorax about as long as broad,

rounded at the sides, widest at the middle, more narrowed in front than behind,

feebly constricted at the apex; the dorsum slightly flattened, strongly and

closely punctate, without any smooth median

line. lytra distinctly wider than the pro-

thorax and with a definite humeral callus,

deeply striate, with large, close punctures that

are wider than the striae and diminish behind ;

the narrow sinuous intervals each with a row

of fine spaced punctures. Underside strongly

and closely punctate, even on the two basal

ventrites.

Length: 2-2-2-6 mm.; breadth, 0-8-0-9

mm.

Upolu: Malololelei, 2,000 ft., 3 3g, 4 29,

vi.1924.

This small species 1s in some respects

intermediate between the hitherto monotypic

Rhyncolosoma, Champ. 1914, and Ochronanus,

Pasc. 1885, but is placed in the former genus

because it agrees with it in having no

postocular lobes or vibrissae on the prothorax,

in its distinctly bilobed third tarsal joint,

the comparatively small eyes, and in the medianly obliterated first ventral

suture.

The genotype, R. dubium, Gahan 1900, from the Seychelles and Christmas

Island, is a larger insect with oval convex eyes ; the rostrum of the ¢ 1s hirsute

beneath ; the antennae are stouter, with the scape reaching the eye; the

prothorax is widest behind the middle and there as broad as the elytra; the

punctures on the elytra are not wider than the striae, so that the intervals are

not sinuous, etc.

SEGBBS

Trext-Fia. 31.—Rhyncolosoma sub-

signatum, Sp. ., 3.

344 INSECTS OF SAMOA.

83. Ochronanus pumilus, sp. n.

32. Testaceous yellow to pale brown ; bare.

Head very finely and sparsely punctate anteriorly, the punctures being

much finer and sparser than those on the base of the rostrum; the forehead

more coarsely and closely punctate, and feebly impressed transversely. Rostrum

about as long as a front femur, parallel-sided, slightly curved, more or less

confluently punctate at the base, the punctures becoming finer and sparser in

front, especially in 9, in which the rostrum is also slightly longer and narrower.

Prothorax a little longer than broad, sub-conical, widest not far from the base,

with the sides gently curved, the sub-apical constriction being invisible from

above ; the dorsum strongly and closely, but not confluently, punctate through-

out, the punctures on the disk being almost or quite as large as those in the

elytral striae. Hlytra about twice as long as broad, parallel-sided, only slightly

wider at the shoulders than the broadest part of the prothorax ; the punctures

rounded and wider than the striae, so that the intervals are crenulated; the

latter wider than the striae, and each with a row of extremely inconspicuous

remote punctures. Legs with the femora shiny and bearing fine, sparse punc-

tures ; the front tibiae shallowly sinuate on the apical half of the ventral edge

and there bearing a dense fringe of white hairs.

Length: 1-75-1-88 mm.; breadth, 0-60-0-65 mm.

Upolu: Apia, 1 9, v.1924.

Tutuila: Fagasa, 11 gg, 20 29, 9.1x.1923 (Swezey and Wilder—type).

Type in the Bishop Museum, Honolulu.

The genotype, O. pymaeus, Pasc. 1885, from Java, differs from the present

species in having the head as strongly and closely punctate as the base of the

rostrum ; the punctures on the disk of the prothorax are smaller than those

in the striae of the elytra, and the sub-apical constriction is clearly visible from

above ; and the elytra at the shoulders are markedly wider than the prothorax.

O. metasternalis and puncticollis, Heller 1916, from New Caledonia, are

both much larger species (3 and 2-8 mm., respectively) and differ notably, inter

alia, in the structure of the metasternum, the former having a carina on each

side of this sternite and the latter a tubercle.

CURCULIONIDAE. 345

84. Stereoderus binodifrons, Marshall.

Proc. Hawaii. Ent. Soc., iv, p. 598, 1921.

Upolu (Dr. Swale).

Savaii: Safune, rain forest, 2,000-4,000 ft., 1 9, 8.v.1924 (Bryan).

85. Rhyncolus samoanus, Marshall.

Temnorhamphus samoanus, Marshall, Proc. Hawaii. Ent. Soc., iv, p. 599, 1921.

Upolu: Apia, 1 2, 15.ix.1923 (Swezey and Wilder), 1 g (Dr. K. Friedrichs).

Tutuila: Pago Pago, 2 3g, 21.ix.1923 (Swezey and Wilder).

This species was wrongly described as a Temnorhamphus and must be trans-

ferred to the genus Rhyncolus.

86. Rhyncolus fuscicollis, sp. n.

6. Colour red-brown, with the prothorax blackish.

Head with distinct separated punctures and without a frontal fovea.

Rostrum about as long as broad, with the punctures finer and closer than those

on the head and with a very shallow rounded median impression near the apex ;

the scrobe running right up to the front margin and turning sharply down-

wards along the margin, its upper edge being on a level with the upper edge

of the eye. Antennae with joint 1 of the funicle about as long as broad, the rest

strongly transverse and slightly widening distally ; the club distinctly com-

pressed. Prothorax slightly longer than broad, widest near the base, rapidly

narrowed behind and gradually so in front, with a shallow sub-apical con-

striction that does not extend to the dorsum, finely and closely punctate above,

with an abbreviated median impunctate line ; the pleurae with much shallower

and sparser punctures. EHlytra sub-cylindrical, not wider than the prothorax,

and rather gradually declivous at the apex ; the striae rather shallow, strongly

crenato-punctate, the punctures not diminishing behind; the intervals some-

what convex, smooth, each with a row of minute punctures ; interval 9 narrowly

carinate from about the middle to near the apex and there obtusely costate.

Length: 2-5-2:8 mm.; breadth, 0-7-0-8 mm.

Tutuila: Pago Pago, 1 3, 21.1x.1923 (Swezey and Wilder—type) ; Afono

Trail, 1 9, 25.1x.1923 (Swezey and Wilder).

Type in the Bishop Museum, Honolulu.

ING 7

346 INSECTS OF SAMOA.

In addition to its smaller size, this species differs from R. samoanus in the

following characters: The punctures on the rostrum, even at the base, are

markedly smaller than those on the head; the prothorax is more elongate,

more sub-conical, with the sides straighter, and the punctures are much smaller,

the interspaces being almost always as wide as or wider than the punctures ;

interval 9 on the elytra unites with interval 1 at the apex, whereas in samoanus

it unites with 3. As is usual in this genus, interval 1 on the right elytron is

much wider at the apex than the same interval on the left elytron.

LIST OF TEXT-FIGURES.

Text-fig. 1. Ottinychus buatoni, sp. n.

2. 3 be lateral view of head and prothorax.

3. Llytrurus bicolor, Mshl., 3.

4. Nodocnemus subfasciatus, sp. n., 3; a, lateral view of head and prothorax.

5. Hesychobius nebulosus, sp. n., 3.

* 6. Amblycnemus stevensoni, sp. 0., 2.

7. Nesendaeus setolineatus, sp. n., 2.

8. Cranopoeus turritus, sp. n., 3.

9: FA BS lateral view.

0. Spanochelus planirostris, sp. n., 6; a, lateral view of head.

1. (a) Microcryptorrhynchus glomus, sp. n., 2; (b) M. subscutellatus, sp. n., go; (ce) M.

analis, sp. D., d.

., 12. Phanerostethus dilophus, sp. n., g, lateral view.

., 13. Deretrosus gibber, sp. n., &.

» 14. Deretiodes swezeyi, sp. n., &.

», 15. Chaetectetorus tutuilae, sp. n., 3.

» 16. (a) Trigonopterus bryant, sp. n.; (b) 7. crenipes, sp. n.; (¢) LT. serratupes, sp. n.

» LT. Legs of Trigonopterus : a, front femur of 7’. serratipes, sp. n.; 6, hind tibia of 7.

crinipes, sp. n., 6; ¢, front tibia of 7. caesipes, sp. n., d; d, hind tibia of 7. sub-

metallicus, Mshl.

; 18. Omobaris lucens, sp. n., 2.

;, 19. Head and prothorax, lateral view, of: (a) Omobaris lucens, sp. n., 2; (b) Neso-

baris tuturlae, sp. n., 3.

. Nesobaris tutwilae, sp. n., 3.

. Diathetes lyriger, sp. n., 3.

. (a) Dryophthorus muscosus, sp. n., 2; (b) D. armaticollis, sp. n., 3.

. Dynatopechus rubronotatus, sp. n., 9.

. Gitonischius tubicollis, sp. n.

. Microtribus longiceps, sp. n., 2.

. Phloeophagosoma carinirostre, sp. n., 2.

. Aphanocorynes humeralis, sp. n., 3.

. Cossonus platyrrhinus, sp. n., d; a, inver lateral view of front tibia. ENTOMS

. Mystrorrhinus dimorphus, sp. n., large 3.

31. Rhyncolosoma subsiqnatum, sp. n., 3.

TN NNMPNMNNMNHW HWY LO

KH OW OaANO OR WYN KO

PRINTED IN GREAT BRITAIN BY WILLIAM CLOWES AND SONS, LTD., LONDON AND BECCLES,

Retr ced

ais

INSECTS OF SAMOA

AND OTHER SAMOAN TERRESTRIAL

ARTHROPODA

LIST OF PARTS AND SYSTEM OF PUBLICATION :—

Part 1. Orthoptera and Dermaptera.

,. Il. Hemiptera. :

.. III. Lepidoptera.

IV. Coleoptera.

»» \.. Hymenoptera.

» VI. Diptera.

, WII. Other Orders of Insects.

»» VIII. Terrestrial Arthropoda other than Insects.

» LX. Summary and Index.

The work is published at intervals in the form of numbered fascicles.

Although individual fascicles may contain contributions by more than one

author, each fascicle is so arranged as to form an integral portion of one or

other of the Parts specified above.

Tat of) Paceicles iesued to. 25th April, 1931 :—

Insects of Samoa and other Samoan Terrestrial Arthropoda. Maps | and Date Issued,

2 (in envelope). 1927, 4to. 6d. 26th February, 1927.

‘Part I. ORTHOPTERA AND DERMAPTERA.

Fase. 1. Dermaptera. By Dr. Alfredo Borelli. Pp. 1-8. 1928, 4to. Is. 28th July, 1928.

Fasc. 2. Orthoptera. By Dr. L. Chopard. 51 text-figures. Pp.9-58. 1929, 4to. 5s. 26#); January, 1929.

Part II. Hemiprera.

Fasc. 1. Fulgoroidea. By F. Muir. 25 text-figures. Psyllide (Chermide). By

Prof. D. L. Crawford. 4 text-figures. Coccide, Aphidide and Aleyrodide.

By F. Laing, M.A., B.Sc. 3 text-figures, Pp. 1-45. 1927, 4to. 2s: 6d. 25th June, 1927.

Fasc. 2. Cercopide. By V. Lallemand, M.D. 10 text-figures. Cicadide. By

i Myers, Sc.D. 22 text-figures. Aquatic and Semi-aquatic Heteroptera,

y Prof. Teiso Esaki. 6 text-figures. Pp. 47-80. 1928, 4to. 2s. 6d. 23rd June, 1928.

Fasc. 3. Heteroptera. By W.E. China, B.A. (Cantab.). 28 a :

ie 81-162. "1930, Ato. Be a ny le 26th July, 1930.

Part III. Lepiporrera.

Fasc. |. Butterflies of Samoa and some neighbouring Island-groups. By G. H. E.

Hopkins, V.A., F-E.S. 1 text-figure and 4 plates. Pp. 1-64. 1927, 4to. 5s. 9th April, 1927.

Fase. 2. Micro-Lepidoptera. By Edward Meyrick, B.A., F-R.S. Pp. 65-116.

1927, 4to. 2s, 6d. SE es Deli P 28th May, 1927.

Fasc. 3. Geometridae. By Louis B. Prout, F.E.S. 2 text-fig d | plate.

Pa tigelon: 1928 dior eegiy ee ae 28h March 19u8)

List of Fascicles issued to 25th April, 1931 (continued) —

Part IV. CoLeoprTera.

Fasc. 1. Carabide. By H. E. Genes

Zimmermann. foot figutes ale

rchymont.

figures. Hydrophilide. By A Vege ure Clavicornia and

Lamellicomia. By G. J. Arrow. 13 text-figures. Bae ae to. 3s.

Fasc. 2. Heteromera, Bostrychoidea, Maced erin a els ‘By K. G.

be tent figures. liscide. By A.

linide. gas MB. ast

Blair, BSc. 14 text-figures. Elateride. . van Zwaluwenberg. 10

text-figures. Meee hte, Bred ad Flavia rambycide. By

r- uaa ae late. Brent Kleine. 4 text-figures.

Anthribide. ee ib ordan, Ph.D eee Proterhinide. By

R.C.L Seine! DSc, F-R.S: Pp. Bi-174, 1928, 4to. 5s.

Fasc. 3. eposede By K. G. Blair, BSc. 1 text-Agure. eared

By S/ Mat MA, ‘IStexcReuren Pe 175-216 1009 dear ee

Fasc. 4. Platypodidae and Scolytidae.

figures. Pp. 217-248.

Fasc.5. Curculionidae. By Sir Guy Marshall, C.M.G.,DSc.,F.RS. 3] text-

figures. Pp. 249-346. 1931, 4to. 5s.

Part V. HyMENOPTERA.

Fasc. 1. Apoidea, Sphecoidea, and Vespoidea.

E.RS., an velyn Cheesman, F.E.S.,

By Francis X. Williams. text-figures.

9 text-figures. Pp. 1-58. 1928, 4to. 5s.

Part VI. Drptera.

Fasc. 1. Streblide and Nycteribiide, By L.Falcoz. 7 text-figures.

oscide. By erris. 6 text-figures. Pp. 1-21. 1927, 4to.

Fasc. 2. -Nematocera By F.W.Edwards, M.A. 20text-figures. Cecidomyimne

By H. F. Barnes, B.A., Ph h.D. 4 text-figures. Pp. 23-108. 1928, 4to. 5s.

Fasc, 3. Straronvide, dabonide and aes By Gertrude Ricardo. 6 text-

figures. re 0 eapouvad - eEUN Bes ates 2 text-figures.

Me Naa se By C si. 8 teva

ee Buxton, M.A.

Pp. 109-175. "1929, 4to. 5s.

ee i: aS a and Pipunculidae.

Syrphidae Frank

an paren

4to. 2s. 6d.

Fasc. 5. Ortalidae.

By C. F. C. Beeson, D.Sc.

1929, 4to. 2s. 6d.

13 text-

By R.C.L

12 een

Roce: By

. Perkins, D.Sc.,

ve Larride.

F. Santschi,

pee

"By TAR?

By J. E. Collm. 7 text-figures.

text-figures. Clusiidae (Heteroneuridae)

BTR Hae 6 text-fgures. Pp, 177-213. 1929,

R. Calliphende, Be

J.R. Malloch. Pp. 215 lees 1930, 4 alliphoridae. By

Fasc. 6. Lonchaeidae, Chloropidae ae la By J .R. Malloch. 3

text-figures. Pp. 239-25]. 1930, 4to. Is.

Part VII. Otner Orvers or INsEcTs.

nee 1. Isoptera: Family Termitide. By Gerald F. Hill. _14 text-figures and

I plate. onata. By eae F.C. Fraser, IMS.,F-ES. 5 text-figures.

Pp. 1-44. 1927, 4to.

Fasc. 2. Plectoptera. By a iJ Tillyard, Sc.D. ne ntab.), a ee and J. A.

text-fgures. onaptera. By P. A. Buxton, Thysanoptera.

Lestage.

se 6 text-figures. Pp. ‘B76 1928, 4to.

By RolardS BaewibFROE.

2s. 6d.

Fasc. 3. a ci eel ie Waterston, ne 2 text-figures. Anoplura. By

Buxton, richoptera. artin osely. figure.

I a igure and 2 plates. Apterygota.

Neuroptera. By ai ben-Petersen.

By George H. Carpenter,D.Sc. 32text-figures. Pp. 77-116. 1928, 4to. 2s. 6d.

Part VIII. TrrresrriaL ARTHROPODA OTHER THAN INSECTS.

Fasc. |. Isopoda_Terrestria. By Harold G. Jackson, mae 2 plates. Scor-

pionoidea, By uxton, 'seudo-scorpiones. . Kastner. 11

Fase ad Acarina. By Stanley Hirst. 2 text-figures. UP. ‘1-27. 1927,

to $.

Fasc, 2. _Myriopoden (Myriopoda). By C. Attems. 4 text-figures. Araignées

(Araneida), By Dr. Lucien Berland. 79 text-figures. Pp. 29-78. 1929, 4to. 2s. 6d.

Part IX. Summary aNnp INDEX.

Fasc. 1. Description of the Environment.

text-figures and 6 plates. Pp. 1-31 1930, 4to.

Malloch.

Musi @.

aoe 6 ae

By P. A. Buxton, MRCS. 2

2s. 6d.

2th February, 1928. |

| 25th April, 1931.

Sarccphagide, By

23rd June, 1928.

Date Issued.

19th December, 1927.

23rd F baie} 1929. q

22nd June, 1929. 1

25th February, 1928.

23rd July, 1927.

23rd June, 1928.

llth May, 1929.

27th July, 1929.

22nd March, 1930.

22nd November, 1930.

28th May, 1927.

28th July, 1928.

23rd July, 1927.

22nd June, 1929.