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BRITISH MUSEUM (NATURAL HISTORY)

INSECTS OF SAMOA

_AND OTHER SAMOAN TERRESTRIAL

ARTHROPODA

PART IV. COLEOPTERA

Can FASC. 2. Pp. 67-174

HETEROMERA, BOSTRYCHOIDEA, MALACODERMATA anp

Re BUPRESTIDAE. By K. G. Bair, B.Sc.

ELATERIDAE. By R. H. vAN ZWALUWENBERG.

MELASIDAE (EUCNEMIDAE). By E. Fieuriavx.

CERAMBYCIDAE. By Cur. AuriviLiius.

BRENTHIDAE. By R. KLEINE. |

3 ANTHRIBIDAE. By Kart Jorpan, Px.D.:

__ PROTERHINIDAE. By R. C. L. Perkins, D.Sc., F.R.S.

ree: WITH THIRTY-NINE TEXT-FIGURES AND ONE PLATE

ae LONDON

__—s«éPRINTED BY ORDER OF THE TRUSTEES OF THE BRITISH MUSEUM

SOLD AT

Tan Brirish Mousnum (Naturat History), ORomwent Roap, 8.W.7

AND BY

B. Quarrren, Lrp.; Dunav & Co., Lrp.; Tas Oxrorp University Press; anp

Wueppon & Wrsnmy, Lrp., Lonpon; abso sy Otivyr & Boyp, EpinsuRGH

1928

| Issued 26th February, 1928.] ; [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 an 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 studies

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 imtended 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 will be divided into eight “Parts” (see p. 3 of wrapper), which

will be subdivided into “Fascicles.”’ Each of the latter, which will appear as

ready in any order, will consist-of one or more contributions. On the

completion of the work it 1s intended to issue a general survey, summarising

the whole and drawing from it such conclusions as may be warranted.

E. E. AUSTEN,

Keeper of Entomology.

British Museum (Naturat History),

CroMWELL Roap, 5.W.7.

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INSECTS OF SAMOA

Part IV. Fasc. 2.

HETEROMERA, BOSTRYCHOIDEA, MALACO-

DERMATA AND BUPRESTIDAE

By K. G. Buatr, B.Sc.

(With 14 Text-figures.)

From the distributional standpoint, the Coleoptera of the groups here dealt

with seem to fall into three categories: (a) peculiar to the Samoan Group ;

(b) of wider distribution in the Pacific, im some cases apparently limited to

neighbouring groups of islands, in others extending throughout the tropics of

the old world; (c) cosmopolitan, in most cases store-pests and undoubtedly

introduced by commerce; this latter category is of course of no value in

considering zoogeographical distribution.

Out of about sixty species discussed in the present paper, twenty-two

belong to the first category, while five genera, Apteromerus, n., Callistroma

Fairm., Scolytocis, n., Melaneros Fairm. and Samoaneros, n., are also peculiar

to Samoa. A further ten species, together with the genus Menandris Haag,

are known in addition only from the adjacent groups of Wallis Is., Fiji,

Tonga, and the Ellice Is. Of these autochthonous genera, Apteromerus is no

doubt an offshoot from Bradymerus Perr., a genus mainly Indo-Malayan and

Melanesian in distribution, and Callistroma from Paracupta Deyr., largely

developed in Melanesia. For Scolytocis it is difficult to assign any particular

origin; Melaneros and probably Samoaneros are offshoots from the large and

somewhat indeterminate genus Plateros, and probably also of Indo-Malayan

origin.

A consideration of the distribution of some of the more extensive but not

too generally distributed genera, Bradymerus, Menimus, Uloma, Thesilea,

DV 67 1

68 INSECTS OF SAMOA.

Chariotheca, Amarygmus among the Tenebrionidae, Pelecotomoides in the Rhipi-

phoridae, Callerhipis, etc., appears to support the inference that the fauna of

our region is a development of a branch originating in the Indo-Malay region

and running eastward through Melanesia to Polynesia. So far as it is possible

to judge from the limited fauna here considered, there seems little evidence

of any important contribution having been received from Australia, no genera

peculiar to that fauna, or their derivatives, being represented ; such features

as they have in common, e.g. Carphurus, would appear to be due to a common

origin in the Papuan region, rather than to an independent origin in Australia.

Collections of greater or less extent from the Samoan Group have been

received at the British Museum from the Rev.8. J. Whitmee, 1875, 1876, 1890,

and 1897; Dr. H. Swale, 1917, 1918, 1920; Dr. F. W. O’Connor, 1920; while

for the purposes of this present work further collections have been kindly lent

by the authorities of the Bishop Museum, Honolulu (Coll. Swezey and Wilder,

EK. H. Bryan, Jr., A. F. Judd), and by Mr. F. Muir of Honolulu (Coll. H. C.

Kellers).

For bibliography, the reader is referred to the respective parts of Junk’s

Coleopterorum Catalogus where published, only the original citation, with a

reference to a figure, and to papers subsequent to Junk’s work being given in

the present paper.

The types of new species, except when otherwise stated, are in the British

Museum.

The following table shows the distribution, so far as it is known, of the

Samoan fauna among the Samoan Is., and in other parts of the Pacific.

The names of species and genera described below as new are shown in

heavier type.

s - Hs F D TION

3 e 5 z, URTHER ISTRIBUTION.

PlH|n|]&

TENEBRIONIDAE

Mesomorphus villager Blanch. x Melanesia, Hawaii, Indo-Malaya, etc.

Bradymerus granaticollis Fairm. . x Melanesia.

a anucorum Fairm. x Tonga and Fiji.

. lobicollis Geb. . tA New Guinea.

Apteromerus convexus Fairm. Kal Wallis Is.

Menimus samoensis, n. x

Tagalus swalei, n. 2

HETEROMERA, MALACODERMATA, ETC.

69

5 3 | = <

a | P 3 P FurtTHER D1stTRIBUTION.

ee | Als

TENEBRIONIDAE.—continued.

Gnathocerus cornutus F. 2 | | Cosmopolitan.

Tribolium castaneum Hbst. SLX 35

Palorus austrinus Champ. Ss | Australia, Damma Is.

5 upoluensis, n. x |

Uloma cavicollis Fairm. x x Wallis Is., Ellice Is.

Alphitobius diaperinus Pz. . x Cosmopolitan.

laevigatus F. as

Sciophaqus pandancola Bdv Me Melanesia, Polynesia.

Thesilea puncticeps Fairm. . x < Fiji (2).

Chariotheca planicollis Fairm. SEM S<ellaex Wallis Is.

ue samoensis, 0. eo

fe sulcipennis, n. . x x

Menandris aenea Haag. Sule Ovalau (Fiji), N. Australia (?).

Amarygmus samoensis Haag. x | x | xX Vavau (Tonga).

= tuberculiger Fairm. Sexe Fiji, Tonga.

MELANDRYIDAE

Bryanella samoensis, n. x

ANTHICIDAE

Anthicus oceanicus Laf. x Marquesas Is., Society Is., Hawaii,

China, Ceylon, Seychelles, etc.

MorDELLIDAE

Mordella novemguttata Montr. x Woodlark Is., Philippines, Born

etc.

Mordellistena dodoneae Montr. x x | x | New Caledonia, Fiji, Australia.

consimilis Blr. <i xX Fiji.

5 samoensis, N. x ISX

‘a buxtoni, n. Sle

- swezeyl, ll. Seni x

es Kellersi, n. |x

uM nigrescens, n. <<Go

RHIPIPHORIDAE

Pelecotomoides fulvosericans Fairm. | X | X Fiji, Tonga, Ellice.

OEDEMERIDAE

Ananca kanack Fairm. <x Melanesia, Polynesia.

» bicolor Fairm. Dolise Tahiti, Tonga, Ellice, N. Hebrides.

;, decolor Fairm. x OX Tahiti, Ellice, Marquesas.

Pselaphanca lateritia Fairm. S< Society Is.

Sessinia livida F. <I Tahiti, Ellice, Tonga, Fiji.

CirpaE

Cis savaiiensis, 0. x

», tutuilensis, n. 5 x

Scolytocis samoensis,n. . x

€0,

70 INSECTS OF SAMOA.

< :

R E F p FourtHer DISTRIBUTION.

Be By lle ay nl

P/JH/|n|&

LycTIDAE

Lyctus brunneus Steph. — . : NGI Cosmopolitan.

Minthea rugicollis Wk. a4 3

BostRYCHIDAE

Rhizopertha domimca F. . : < ss

Xylothrips religiosus Bdv. . : x Melanesia, Polynesia.

Xylopsocus castanoptera Fairm. . g Tropics of Old World.

ANOBIIDAE

Lasioderma serricorne BF. . : x Cosmopolitan.

LycrDaE

Melaneros atroviolaceus Fairm. . x x

» quadraticollis Fairm. . x) SAX Tonga (7).

Samoaneros acuticollis Fairm. x x

45 muirl, n.. : : x

MELYRIDAR

Carphurus flavipes, 0. : 5 x

Carphuroides pectinatus Shp. , 2 Hawaii, Borneo, N. India.

CLERIDAE

Cylidrus cyaneus F. . : : 2 SS Tropics of Old World.

Tarsostenus univittatus Rossi x Cosmopolitan.

Necrobia rufipes De G. KO OS Is 33

RHIPICERIDAE

Callirhipis femorata Waterh. : ria aed Nassau Is.

BUPRESTIDAE

Callistroma samoensis Sndrs. x x

Cyphogastra abdominalis Waterk. x D. of York Is., New Britain.

Chrysobothris chrysomela Devr. x 3

Agrdus indignus Fairm. eae Vavau (Tonga), Polynesia.

,5 samoensis, 0. x |

The above are represented in the material before me as follows :—

Family : TENEBRIONIDAE.

Gebien, Coleopt. Catal. Tenebr. (Junk, parts 15, 22, 28, 37), 1910-11.

The beetles of this family occurring in Melanesia have been well mono-

graphed by H. Gebien in “ Resultats de ’ Expédition Scientifique Néerlandaise

a la Nouvelle-Guinée,” Vol. xiii., Zoologie. Livr. 3, 1920 (subsequently referred

to as Tenebr. N. Guin.). In this work a full synonymy is given, in addition to

HETEROMERA, MALACODERMATA, ETC. 71

a complete account of the distribution of each species as known to the author ;

many records from Samoa are included.

The same author had previously published two lists of Tenebrionidae from

Samoa, viz. :

1. Denkschr. K. Akad. Wiss. Wien, Bd. 89, p. 689, 1914 (Bot. u. Zool. Ergebn.

Forschungsreise nach Samoa, 1905). Coll. by Dr. Rechinger.

2. Arch. Naturg., Bd. 88, A. 10, p. 153, 1922. Coll. Dr. K. Friederichs.

1. Mesomorphus villiger Blanchard.

Blanchard, Voy. Péle Sud, iv, p. 154, pl. 10, fig. 15, 1853; Gebien, Teneb. N. Guin., p. 229.

Upolu: Apia, 23.1.1927, i., iv., 23.v., and xi1.1924.

Previously received from Rev. 8. J. Whitmee, 1876; and already twice

recorded from Samoa by Herr Gebien.

This species, of which the type was originally obtained in New Guinea, is

widely distributed in the Melanesian groups, its range also extending to Australia,

the Hawaiian Is., through China to Japan, the Indo-Malay region, Madagascar

and tropical Africa. I have not seen examples from Tahiti or other of the

Polynesian groups.

The species probably occurs throughout the year, as in New Guinea (Gebien).

2. Bradymerus granaticollis Fairmaire.

Ann. Soc. Ent. Belg., xxvii (ii), p. 23, 1883; Gebien, Teneb. N. Guin., p. 248.

Upolu: Apia, 24.iv., v., vil, x., xi1.1924; Malololelei, iv.1924; Samoa,

1920 (O’Connor), and vi.-ix.1916 (Swale).

Described from a specimen from Duke of York Is., it occurs in New

Ireland, New Britain, Solomon Is., New Guinea, Dorey, and the Moluccas.

3. Bradymerus amicorum Fairmaire.

Rev. Zool. (2), I, p. 420, 1849 (Bolitophagus) ; Blanchard, Voy. Pole Sud, iv, p. 166, pl. 11, fig. 2,

1853.

Upolu: Apia, 24.iv.; Malololelei, iv.1924.

Tonga; Vavau, Neiafu, 1.11. 1925 ; specimens also in British Museum from

the Fiji Is. and Tongatabu (type locality).

Closely allied to the preceding, which it appears to replace in the Fiji Is.

72 INSECTS OF SAMOA.

4. Bradymerus lobicollis Gebien.

Teneb. N. Guin., p. 240, figs. 14 and 15.

Tutuila: Fagasa, 9.1x.1923 (Swezey and Wilder).

Samoa (Whitmee, 1875).

The unique type was obtained in New Guinea. The two specimens before

me appear to differ from Gebien’s figures in their narrower form, having the

elytra fully half as long again as their united width, and in the thorax being

slightly narrower towards the base ; but in the numerous other peculiarities of

the species they agree well with the description.

Apteromerus, gen. nov. (BOLITOPHAGINAE).

As Bradymerus Perr. (redefined Gebien, Philipp. Jnl. Scz., p. 536, 1925), but

apterous. Canthus rounded, scarcely as wide as the eyes, antennae with 5-jointed

club (the 7th joint narrower than the following joints) ; thorax slightly narrower

than elytra, a little narrower at apex than at base, sides feebly rounded, not

crenulate; elytra at base slightly wider than base of thorax, widest behind

the middle, humerus subrectangular but without callus, intervals carinate ;

metasternum short ; tibiae rounded externally.

5. Apteromerus convexus Fairmaire (Text-fig. 1).

Rev. Zool. (2), I, p. 417, 1849 (Opatrinus).

Upolu: Aleipata, iv. and x1.1924, 8 examples.

Tutuila: Amauli, 6.1x.1923, 12 examples; Leone Road, 7.1x.1923,

1 example; Fagasa, 8.1x.1923, 3 examples; Pago Pago, 27.1x.1923, 1 example

(Swezey and Wilder), and 2 examples (Kellers).

Wallis Is. (Type of Fairmaire).

Placed with some doubt by its author in the genus Opatrinus, the species is

omitted from Gebien’s Catalogue. The series before me agrees well with the

description ; it need only be added that the present species is apterous, or at

least has very poorly developed wings, with the usual concurrent features of a

short metasternum and lack of humeral callosity.

6. Menimus samoensis, sp. n. (Text-fig. 2).

Nitid, blackish piceous, with legs and antennae reddish. Head large,

frons nitid, finely and sparsely punctate, clypeus more opaque, widely emar-

HETEROMERA, MALACODERMATA, ETC, 73

ginate in front, the clypeal suture straight in the middle. Eyes very small,

scarcely visible from above. Antennae moderately slender, reaching a little

beyond the base of the thorax, 3rd joint.elongate, 4th to 6th joints decreasing

a little in length, but even in Q not transverse, the last four forming a loose

Text-Fic. 1.—Apteromerus convecus Fairmaire. TExtT-FIG. 2.—Menimus samoensis, sp. n.

club, with 8th and 9th slightly transverse in 9, elongate in g. Thorax feebly

and sparsely punctate, the base bordered throughout, with an impressed line

of closely placed but ill defined punctures within the border; lateral margins

narrow in front, becoming wider behind. Llytra suboval, the striae slightly

impressed and closely, and rather coarsely punctate, striae and punctures

becoming obsolete behind; intervals with a single row of widely spaced

punctures. Prosternum depressed behind coxae, but its apex again sharply

raised.

Length: 3 mm.

Upolu: Malololelei, 2000 ft., 4 examples.

(Paratype in Bishop Museum, Honolulu.)

Allied to M. blairt Gebien (Phil. Journ. Sct., p. 111, 1925), but much darker,

with more slender antennae, and elytral striae more closely punctate.

74 INSECTS OF SAMOA.

7. Tagalus swalei, sp. n. (Text-fig. 3).

Klongate oval, flavous, under side and limbs brownish. Head strongly

transverse, sunk to the eyes in the prothorax, widely rounded before the eyes,

the continuity of the curve not broken by the

small, semicircular clypeus, labrum prominent,

almost covering the jaws. Antennae short,

not extending to the middle of the thorax,

first two joints thicker than the following

joints, 2nd joint longer than the third, the

latter a little longer than wide, 4th to 7th

almost moniliform, 8th to 10th successively

wider and strongly transverse, the 10th and

11th forming a strong club. Prothorax trans-

verse, arcuately narrowed from base to apex,

base arcuately projecting, indistinctly mar-

ginate, sides strongly bordered, anterior mar-

gin not bordered; disc not very strongly

convex transversely, almost flat longitudi-

Text-rig. 3.—Tagalus swalei, sp.n. nally, coarsely, rather closely but irregularly

punctured, and with shght, ill-defined, irregular

depressions almost as though a little shrivelled in drying. Scutellum small.

Elytra short, very convex at sides and behind, so as to overhang the lateral

margins; striae deep, rather strongly punctate, nearly as wide as intervals,

becoming obsolescent near apex; no scutellar stria present ; intervals convex

and even, except 9th which is strongly expanded above the metasternum

owing to the sinuosity of the lateral margin. ‘Tibiae carinate externally, finely

denticulate and expanded towards apex to form a sharp apical tooth.

Long: 3 mm.

Samoa (Dr. H. Swale). Two specimens without further data.

It is possible that a new genus may be required for this insect, which differs

from Tagalus cavifrons Fairm. (the only species of Tagalus known to me) in

its less parallel form, with the thorax scarcely margined at the base and not

impressed in front.

HETEROMERA, MALACODERMATA, ETC. 75

8. Gnathocerus cornutus Fabricius.

Ent. Syst. Suppl., p. 51, 1798.

A cosmopolitan species occurring in meal and flour, and recorded from

Samoa by Herr Gebien, from the collection of Dr. K. Friederichs, but not con-

tained in any of the collections now before me.

9. Tribolium castaneum Herbst.

Kaf., vii, p. 282, pl. 112, fig. 13, 1797; Blair, Hnt. Mo. Mag. (2), xxiv, p. 222, 1913.

T. ferrugineum Geb. (Col. Cat. Tenebr.), nec F.

Upolu: Apia, 22.iv.1924 (in oats), 20.vi.1924, i. and 1.1925.

Tutuila: Pago Pago, 0-300 ft., iv.1918 (Kellers).

Cosmopolitan, occurring everywhere in grain and other dried products,

foodstufls, insect collections, ete.

10. Palorus austrinus Champion.

Ent. Mo. Magq. (2), vii, p. 30, 1896 ; Gebien, Teneb. N. Guin., p. 280.

Upolu: Apia, 1.1925. A single specimen.

Champion’s series came from N.-W. Australia and Damma Is., while the

British Museum possesses specimens from Queensland and N. 8. Wales.

11. Palorus upoluensis, sp. n.

Castaneous, antennary orbits strongly raised, rounded and densely

punctate, the clypeus between them flat and sparsely punctate, nearly as long

as the antennary orbit. Antennae extending nearly to middle of thorax, the

last five joints a little wider than the preceding ones, forming an elongate indis-

tinct club. Eyes prominent, coarsely faceted, their anterior margin not con-

cealed by the antennary orbits. Thorax transverse, widest at the base, thence

very slightly narrowed until more strongly rounded to the anterior angles ;

disc rather strongly and moderately closely punctate, with a small indistinct

area on each side free from punctures. Elytra elongate ovate, widest at about

anterior quarter, sides feebly rounded. Striae scarcely impressed, rather

76 INSECTS OF SAMOA.

strongly punctate, punctures larger and more widely spaced in front ; intervals

almost flat, each finely and irregularly punctured in about two indefinite series.

Long. 2-5 mm. ; lat. < 1 mm.

Upolu: Apia, xi.1924, 1 example; Malololelei, iv.1924, 2 examples.

(Paratype in Bishop Museum, Honolulu.)

Possibly the insect recorded by Gebien as Palorus, sp. from Dr. Friederich’s

collection.

In its broad form and non-parallel elytra this insect more closely approaches

the Austrahan P. pygmaeus Cart. than any other species known to me, but is

smaller, with longer antennae and relatively broader clypeus. P. austrinus

is relatively much longer, more than three times as long as wide, with the elytral

intervals fairly regularly uniseriate-punctate. The specimen from Apia (type)

is a little larger than those from Malololelei, and more darkly coloured, the

latter having the elytra near the tip and towards the shoulders indistinctly

paler.

12. Uloma cavicollis Fairmaire.

Rev. Zool. (2), I, p. 447, 1849.

2 U. encausta Fairmaire, loc. cit.

Upolu: Apia, ii., iii., 25.iv., 3.vil., x.1924; also 13.1x.1923 (1 9 Swezey and

Wilder).

Samoa (Swale and O’Connor).

Niue, 6.vii.1918 (H. C. Kellers).

Swain’s Is. (J. J. Lister).

Wallis Is. (Types of Fairmaire).

Ellice Is., 1920 (O’Connor).

The locality ‘“ Sandw. Is.’’ on a male in the Fry Collection is no doubt a

misreading for ‘ Samoa Is.”

Fairmaire’s type of U. cavicollis from the Doué Collection is now in the

British Museum, and agrees exactly with a rather poorly developed ¢ from

Samoa. The specimens forming the short series from the Ellice Is. differ from

Samoan examples in having a much smaller excavation on the thorax of the 3,

with the prominences very poorly developed ; also in the thorax being com-

pletely immarginate at the base. In U. cavicollis there is a fine but more or

less entire margin. The Ellice Is. form agrees with the typical one in having

HETEROMERA, MALACODERMATA, ETC. 77

the median lobe of the mentum V-shaped, or with a deep median triangular

impression, in both sexes. In Gebien’s Col. Cat. Tenebr., p. 404, the patria of

U. cavicollis is given as “ Viti-Inseln,”. but I have not seen any example

from the Fiji group where it appears to be replaced by U. insularis Guér.

(=multicornis Fairm.).

13. Alphitobius diaperinus Panzer.

Faun. Germ., 37, p. 16, 1797 ; Gebien, Tenebr. N. Guin., p. 277.

Upolu: Apia, 1., x.1924.

A cosmopolitan species, but apparently not hitherto recorded from Samoa ;

the British Museum possesses specimens from New Caledonia, the Gilbert Is.,

and Hawaii (Blackburn).

14. Alphitobius laevigatus Fabricius.

Spec. Ins., i, p. 90, 1781; Blair, Ann. Mag. Nat. Hist. (8), xii, p. 486, 1914; Gebien,

Tenebr. N. Guin., p. 277.

A. piceus Olivier, Encycl. Méth., vii, p. 50, 1792, et wucit.

Upolu: Apia, in almost every month of the year.

Tutuila: Pago Pago, iv.1918 (Kellers).

Cosmopolitan, already twice recorded from Samoa by Herr Gebien (Coll.

Rechinger and Friederichs), and received by the Museum from Dr. Swale.

Also recently found under the bark of a tree in the Marquesas Is. (C. L. Collenette).

Comes readily to light at night.

15. Sciophagus pandanicola Boisduval.

Voy. Astrol. Ent., p. 258, 1835.

Pachycerus domesticus Montrouzier (Geb. Col. Cat. Tenebr.).

Chariotheca infima Fairmaire, Ann. Soc. Ent. France (6), 1, p. 279, 1881.

Upolu: Malololelei, 2000 ft. 25.iv., 14~-30.v1.1924, 3 examples.

A species widely distributed among the Pacific Is., and already twice

recorded by Gebien from Samoa, whence it was received by the Museum from

Dr. Swale. The British Museum possesses specimens from Fiji, New Caledonia,

Damma Is., and Hawai; and the species was recently found in numbers by

members of the St. George Expedition, in the Marquesas Is., “‘ under bark of

tree’ (C. L. Collenette), and on Raiatea, Society Is. (Miss KE. L. Cheesman).

On a specimen in the British Museum from Fiji (W. Greenwood), found in

78 INSECTS OF SAMOA.

pulverised dry grass in a cave, is the interesting note “ emits a steady greenish

hight.” It is to be hoped that the living insects will be carefully observed in

order to determine whether this luminosity is a normal function of the beetle,

or another case of an insect having become either infected with luminous

bacteria, and moribund, or smeared with some putrescent substance containing

luminous bacteria. No case of true light emission is hitherto known in this

family of beetles.

16. Thesilea puncticeps Fairmaire.

Ann. Soc. Ent. France (6), I, p. 281, 1881.

Upolu: Apia, x.1924, 26.v.1924 (Bryan); v.ix.1916 (Swale); Tuaefu,

16.1x.1923 (Swezey and Wilder).

Savaii: 1000 ft., 21.x1.1925.

Agrees well with the description: Fairmaire expresses doubt as to the type

locality, giving Fiji or some neighbouring island. A single specimen only

from each of the above localities; two of them are considerably smaller than

the rest, 5-5 mm. instead of 7 or 8 mm., but do not appear to differ specifically.

It may be noted that 7. ruficornis Bates, T. politula Fauv., and T. mirabilis

Fauv. (Geb. Col. Cat. Tenebr., p. 502 *), should all be transferred to Callasmilaz.

Of the remaining New Caledonian species, 7’. baladica Montr. would appear to

be a true Thesilea ; T. fawveli Geb. (versicolor Fauv.), T. kanalensis Fauv., and

T. purpurea Fauv. are unknown to me.

17. Chariotheca planicollis Fairmaire.

Rev. Zool. (2), I, p. 451, 1849 (Olisthaena).

Thesilea planicollis Fairm., Geb. Col. Cat. Tenebr., p. 502.

Upolu: Apia, x.1924, iv.1925 ; Malololelei, 2000 ft., 28.x1.1924.

Savaii: Safune, rain forest, 2000-4000 ft., 8.v.1924 (Bryan).

Tutuila: Amauli, 5.ix.1923; Fagasa, 7.ix.1923 (Swezey and Wilder) ;

Pago Pago, iv.1918 (Kellers).

Already recorded by Gebien from Samoa (coll. Dr. Friederichs), as C.

cupripennis Pasc. var. In Tenebr. N. Guin., p. 353, the same author quotes

* The references to Fauvel’s paper are erroneously given as Rev. d’Ent., xxiii, 1904, instead

of xxiv, 1905.

HETEROMERA, MALACODERMATA, ETC. 79

this latter species in synonymy, considering that we have but one variable and

widely distributed species. Judging from the material before me, the Samoan

race (type from Wallis Is.) appears to differ constantly from the New Guinea

race (cupripennis) in its smaller size, less shining, more finely punctate, and

straighter-sided thorax (the sides converging slightly from the base), and in the

different colour pattern on the elytra, which present the suture aeneous or

bronze, ranging outwardly through purple, blue, green, aeneous to coppery

(on 4th interval), beyond which they are dark and scarcely metallic. C. cupri-

pennis, though very variable in hue, does not present this sequence of colours.

I have not seen an authentic specimen of C. planicollis, and Fairmaire’s

description is not sufficiently detailed to enable me to be sure of the accuracy

of the above determination.

18. Chariotheca samoensis, sp. n.

Black, moderately nitid, elytra metallic, varied aeneous and cupreous, with

the 5th, 6th, and 7th interstices raised externally, almost overhanging the

exterior stria, and 3rd, 5th, and 7th intervals strongly cariniform towards apex.

Head closely, almost rugosely punctate ; antennae reddish, barely reaching

middle of thorax, last five jomts forming an elongate club. Thorax widest

at the base, thence gradually, arcuately narrowed in front; anterior angles

acute, strongly produced, base finely margined at sides; disc rather coarsely

but irregularly punctate, much less densely than the head. Elytra strongly

punctate striate, individual punctures elongate, striae deeply impressed towards

apex, intervals feebly convex except as above. Thoracic epipleura very strongly

punctate, prosternum not impressed. Abdomen with the first three segments

moderately sparsely and, except in front, finely, the last two densely and finely

punctate. Tarsi normal. No apparent sexual differences in the three speci-

mens before me.

Long. 10 mm.

Sava: Safune, lower forest, 1000-2000 ft., 10.v.1924 (Bryan).

(Paratypes in Bishop Museum, Honolulu.)

According to the key given by Gebien (Tenebr. N. Guin., p. 383), this

species would appear to be C. alternicostis Geb., but the latter has a differently

shaped thorax, narrowed towards the base as well as the apex, with crenulate

sides, and differently coloured elytra.

80 INSECTS OF SAMOA.

19. Chariotheca sulcipennis, sp. n. (Text-fig. 4).

Short, convex, upper side viridiaeneous or cupreous, under side and legs

black.

Head slightly convex between the eyes, strongly and moderately densely

punctate, clypeal suture distinct but not impressed nor interrupting the margin

of the head, eyes with narrow marginal sulcus; labrum prominent ; antennae

not reaching base of thorax, last six joints produced on inner side, forming a

loose club. Thorax about twice as wide at

base as its median length, sides somewhat

arcuately narrowed forwards, with a strongly

incrassate border; anterior angles blunt,

scarcely prominent, anterior margin feebly

arcuate, finely bordered at sides; base not

bordered, rather broadly prominent in

middle ; disc strongly convex from side to

side, more finely and sparsely punctate than

the head. Scutellum rather large, almost

an equilateral triangle, finely punctate.

Klytra widest behind the middle, the striae

deeply impressed throughout, rather dis-

tantly punctate, with intervals strongly

convex, very finely and not closely punctu-

Text-Fie. 4.—Chariotheca sulcipennis, late ; scutellary stria scarcely indicated, the

sp. n. others ending sharply and separately at a

little distance from the base; posteriorly,

the first nearly meets the 9th (marginal) at the apex, the 2nd nearly meets the

7th, which here approaches the 9th, the 8th being abbreviated above the third

abdominal segment, the 3rd and 6th unite at the apex, while the 4th and 5th

may or may not unite, either with one another, or with the next outside them ;

the lateral margin rather broad and prominent, but concealed posteriorly from

above by the convexity of the elytra; epipleura impunctate, concave beneath

the shoulder, thence flat and gradually narrowed, becoming obsolete about the

base of the last ventral seoment. Under side nitid, black, for the most part

almost impunctate ; mentum with strong median carina ; prosternum obtusely

carinate in front, the process with an impressed border, propleurae impunctate ;

HETEROMERA, MALACODERMATA, ETC. 81

mesosternum deeply excavate ; metasternum almost impunctate, except for a

border of large punctures behind the intermediate coxae, with a deep, rather

sinuate, transverse sulcus on each side in front of the posterior coxae.

Abdomen very finely and sparsely punctulate, the anterior border of each of

the first four segments with a row of large punctures or foveae, those on the first

segment continued as a border to the intercoxal process, those on the fourth

segment smaller and more widely spaced than those on the others. Legs nitid,

finely punctulate ; first jomt of posterior tarsi as long as the two following

together, the claw joint longer than the rest together.

Sexual characters not evident.

Long. 5 mm.; lat. 2.5 mm.

Upolu: Apia, xi.1924, 1 example (Type).

Savaii: Safune, 10.v.1924, 1 example (Bryan).

_ (Paratype in Bishop Museum, Honolulu.)

Owing to its short broad form, the species described above recalls a

Platydema rather than a Chariotheca. The two specimens before me differ in

colour, that from Upolu having the elytra viridiaeneous, while in the example

from Savai they are cupreoviolaceous ; probably in a longer series the colour

would be found to vary indefinitely.

20. Menandris aenea Haag.

Journ. Mus. Godeffr., v, p. 131, pl. 7, fig. 20, 1879.

Upolu: Malololelei, 2000 ft., 14-30.v1.1924.

Tutuila: Pago Pago, 9.1x.1923 (Swezey and Wilder).

Originally described from a specimen from Upolu, and since recorded by

Herr Gebien (Coll. Rechinger) from Ovalau, Fiji.

The two specimens before me differ rather considerably, that from Tutuila

agreeing with a cotype from the Mus. Godeffr. better than that from Upolu.

The latter, a Q, is larger and stouter, with the head and thorax brown, scarcely

aeneous, and finely and rather obscurely punctate ; the front of the head is not

at all flattened. In the Tutuila specimen, a 3, the head over a large triangular

area is distinctly flattened, and rather coarsely and closely punctured. It is

quite possible that these differences are sexual.

In the Bates Collection in the British Museum, there are two specimens

labelled ‘“‘ North Australia, Dimel.” One of these bears the label “‘ Menandris

82 INSECTS OF SAMOA. .

aenea m.,” I believe in Haag Ruthenberg’s handwriting, and the No. 1927.

Both are 3, and are undoubtedly conspecific with the cotype from Samoa, which

also bears the number 1927.

21. Amarygmus (Platolenes) samoensis Haag.

Journ. Mus. Godeffr., v, p. 133, pl. 7, fig. 23, 1879 ; Gebien, Tenebr. N. Guin., p. 405.

Upolu: Apia, Malololelei, Vailima ; in almost every month of the year.

Savail: Tuasivi; Safune, lower forest, 1000-2000 ft.

Tutuila: Pago Pago; Leone Road.

Recorded or received in almost all collections from Samoa.

Probably, as suggested by Haag, A. samoensis is no more than a race of

the more widely distributed Pacific species, A. hydrophiloides Fairm. In some

fifty specimens from Samoa now before me, the colour is generally aeneous,

while the elytra are frequently and the thorax 1s much more rarely violaceous.

Two examples of the same form are labelled Tonga: Vavau (Buxton and

Hopkins), and two more in the British Museum (probably erroneously) ‘‘ Sandw.

Is.” (Fry Coll.).* Typical A. hydrophiloides, described from specimens from

Wallis Is. and Tonga Tabu, are bright blue or greenish blue, and this form

is widely distributed from New Guinea to Fiji. Both forms have the anterior

and intermediate tarsi expanded in the ¢ (Platolenes Geb., Tenebr. N. Guin.),

and in both, in the same sex, the posterior tibiae are thickened about the middle.

214. A. hydrophiloides Fairmaire.

Rev. Zool. (2), I, p. 450, 1849.

A specimen of the typical form was obtained at Haloga, Vavau, 4.11.1925,

with one of the samoensis form, and another at Funafuti, Ellice Group, 17.1x.1924.

22. Amarygmus tuberculiger Fairmaire.

(Loc. cit.)

Upolu: Malololelei, iv., vi.1924, 3 examples; Vailima, vi.1924, 1 example ;

Tafua volcano (Swale).

Savaii: Safune, lower forest, 1000-2000 ft., 9.v.1924, 2 examples (Bryan).

* See Uloma cavicollis (ante, p. 76).

HETEROMERA, MALACODERMATA, ETC. 83

Tutuila: Leone Road, 7.i1x.1923, 1 example (Swezey and Wilder).

Rather larger than the foregoing species, and of a blackish green or blue,

the elytral intervals with a fairly regular median row of fine tubercles

or granules ; the eyes more approximate in front, being separated by a distance

about equal to the middle thickness of the third antennal joint (in A. hydro-

philordes the distance is about twice as great), and the anterior and intermediate

tarsi not thickened in the g. The British Museum series has nearly all been

received at different times from Fiji.

Family : MELANDRYIDAE.

Csiki, Col. Cat. Serropalpidae (Junk, pars 77), 1924.

Seidlitz, Naturgesch. Insect. Deutschl., Abt. 1, Bd. v, 2. Halfte, p. 507, 1898.

Bryanella, gen. n.

Elongate, narrow, feebly arcuate along dorsal surface, head vertical,

scarcely visible from above; eyes large, deeply emarginate for antennal inser-

tions; maxillary palpi large, last jomt elongate, cultriform, longer than the

rest together, the two penultimate joints about equal, almost equilaterally

triangular, slightly wider than the terminal joint; antennae long, extending

to penultimate ventral segment, 2nd joint very short, remaining joints elongate,

subequal. Thorax about as long as wide, arcuate in front, bisinuate behind, the

sides subparallel for the greater part of their length, arcuately narrowed in

front, lateral carina present only on basal half; prosternum separated by a

distinct suture from the pleurae; anterior coxae contiguous behind, their

cavities widely open; scutellum transverse, truncate behind; elytra, except

for a well-marked sutural stria, non-striate, densely and evenly punctate.

Abdomen marginate at sides, the first segment much longer at the sides than

behind the widest part of the coxae, at its shortest but little longer than the

second segment, 3rd, 4th, and 5th segments successively a little longer, their

anterior and posterior margins arcuate, subparallel ; terminal segment triangular,

shorter than the preceding. Anterior tibiae stout, not much longer than the

first tarsal joint, penultimate joint broad and bilobed; intermediate and

posterior tibiae slender, with 6 or 7 oblique but unequal ridges on the outer

side of each, tibial spurs unequal, serrulate on each side beneath, the longer

Iv. 2 2

84 INSECTS OF SAMOA. |

about one-third as long as the first tarsal joint ; penultimate joint of posterior

tarsi simple.

Genotype: Bryanella samoensis, sp. n.

But for the distinct prosternal sutures, this genus, in the key to the genera

of the subfamily Dircaeinae given by Seidlitz (supra), would appear to resemble

the Australian genus Talayra, Champion, from which, however, it further differs

in the form of the palpi, in the proportionate lengths of the abdominal

segments, and in the shorter and more unequal posterior tibial spurs. From

Dircaea, Phloeotrya, etc., with prosternal sutures distinct, it is separated by the

slender antennae, serrulate tibial spurs and simple penultimate joint of the

posterior tarsi.

23. Bryanella samoensis, sp. n.

Dark castaneous-brown, with iridescent reflections ; thorax darker, almost —

black ; legs, antennae and palpi paler.

Thorax coarsely and densely punctate, the punctures obliquely impressed,

each with a tubercle near its anterior margin bearing a long backward-sloping

seta. LElytra with a strong sutural stria on each, puncturation similar to that

of thorax, but notably finer. Prosternum separated from the pleurae by a

distinct curved suture, and more coarsely and less densely punctate ; meta-

sternum finely strigulate in middle, coarsely punctate at sides, metapleurae very

densely and finely punctate ; posterior coxae and first abdominal segment rather

coarsely punctate at sides, the following abdominal segments successively

more finely punctate. Posterior tibial spurs somewhat unequal, the longer

about one-third as long as the first tarsal joint. Anterior femora feebly arcuate,

with rather long, dense, yellowish pubescence beneath (? 3).

Length : 3 mm.

Savai: Safune, lowlands to 1000 ft., 1.v.1924 (Bryan). Type in Bishop

Museum, Honolulu.

The unique individual described above does not seem to fit into any

recognised genus of the family. Superficially it resembles a very small specimen

of Talayra elongata Macl., but, in addition to the marked generic characters

noted, it differs entirely in sculpture, which has no suggestion of transverse

lines as in that species.

HETEROMERA, MALACODERMATA, ETC. 85

Family : ANTHICIDAE.

Pic, Col. Cat. (Junk; pars 36), 1911.

24. Anthicus oceanicus Laferté.

Monogr. Anthic., p. 170, 1848.

Upolu: Apia, 19.1x.1923, 1 example (Swezey and Wilder).

With type locality Marquesas Is., the species has a wide oceanic distribu-

tion, being represented in the Museum Collection by specimens from Hawai,

Society Is., Cocos Keeling Is., China, Ceylon, and the Seychelle Is.

Family : MORDELLIDAE.

Csiki, Col. Cat. (Junk, pars 63), 1915.

25. Mordella novemguttata Montrouzier.

Ann. Soc. Agric. Lyon, vii, p. 33, 1855.

Upolu: Apia, 31.1.1925, 1 example.

Represented in the British Museum by specimens from Borneo, the

Philippine Is., etc.

The single specimen before me differs a little from the typical forms (taken

on Woodlark Is.) in having the anal style black, with the base covered with

white pubescence, and the last two ventral segments clothed at the base only

with similar pubescence. The type is described as having the anal style fulvous,

and examples from Borneo and Singapore agreeing in this respect have the last

two ventral segments entirely clothed with fulvous pubescence. The present

form with black cauda is represented in the British Museum by examples from

N. Luzon, Sibuyan, and Sumba Is.

Mordellistena Costa.

The Samoan representatives of this widely spread genus, which includes a

considerable number of species, may, so far as regards the material before me,

be separated as follows:

1. (10) Unicolorous.

2. (9) Castaneous brown, size larger.

3. (6) Eyes narrow; 4th joint of antennae similar to 5th; comb formula

5: 4.2.2.

86 INSECTS OF SAMOA.

4. (5) Eyes hairy, base not much shorter than lateral edge; cauda slender.

Length: 34mm. . . dodoneae Montr.

5. (4) Eyes almost naked, base eal hall as jong as outer edge ; ‘canda

stouter. Length: 44mm. . . . samoensis, sp. 1.

6. (3) Eyes larger; 4th joint of antenna short, Gat 4 as feng as th.

7. (8) Posterior tibiae with 4 combs, 7.e. 3 strong combs, with sometimes a

weak 4th, above the short sobanical comb. Length: about

3} mm. : consimilis Blair.

8. (7) Pasterion tibiae with 3 pomnibes 2.€. 2 long combs: fia adieatione of a

third, above aber aaa comb. Length: about 3 mm. . buxtoni, sp. n.

9. (2) Blackish. Length: 24 mm. . ‘ ; ‘ : : 3 . nagrescens, Sp. 0.

10. (1) Not unicolorous.

11. (12) Elytra dark, with median longitudinal pale streak in basal half. . swezeyi, Sp. 1.

12. (11) Pale basal streak of elytra embraces shoulder; a transverse band of

pale pubescence behind middle : : : : : . kellersi, sp. u.

26. Mordellistena dodoneae Montrouzier.

Ann. Soc. Ent. France (3), vii, p. 306, 1860; Blair, Ann. and Mag. Nat. Hist. (9), ix, p. 567, 1922.

Mordella dodoneae Cziki, Col. Cat. Mordell, p. 12.

Upolu: Apia, xui.1924; Aleipata, iv.1924, 1 example each locality ;

Leulumoega, 14.1x.1923, 5 examples (Swezey and Wilder).

Savai: Fagamalo, x1.1925, 1 example.

Manua: Tau, 27.1x.1923, 1 ex. (Swezey and Wilder).

Type locality, New Caledonia ; also recorded from the Fiji Is. and Australia.

27. Mordellistena consimilis Blair (Text-fig. 5).

Ann. and Mag. Nat. Hist. (9), ix, p. 568, 1922.

Upolu: Apia, x. and xu.1924; Aleipata, iv.1924; Malololelei, vi.19264 ;

Leulumoega, 14.1x.1923 (Swezey and Wilder).

Tutuila: iv., 21.vi., 21.vii.1918 (Kellers); Pago Pago, 9.ix.1923, 5

examples ; Fagasa, 9.ix.1923 ; Afono Trail, 25.1x.1923, 1 example each locality

(Swezey and Wilder).

Type locality, Fiji Is.

Very similar to IM. dodoneae Montr., but the 4th joint of the antennae is

much shorter than the 5th, instead of being of equal length, the eyes are larger

and more approximate, the distance between them in the ¢ being rather less

than that between the antennal bases, and the tibial combs are different

(Text-fig. 5).

HETEROMERA, MALACODERMATA, ETC. 87

28. Mordellistena samoensis, sp. n. (Text-fig. 6).

Castaneous, covered with a moderately dense and long rust coloured

pubescence. Eyes almost glabrous, long and narrow, the base less than half

as long as the lateral margin, and their distance apart about three times the

greatest width of one of them. Antennae moderately long, reaching a little

beyond the apices of the posterior coxal processes, joints 1 to 3 shorter than

the rest, 4 to 10 subequal, somewhat flattened, each about twice as long as its

greatest width. Cauda rather stout, a little shorter than posterior tarsus, acute

at apex. Posterior tibia stout, its apex rather more than one-third as long as

the posterior edge, the latter with 5 or 6 oblique combs subequal in length,

not reaching half way across the outer face; the internal spur more than half

as long as the first tarsal joint, the external about half as long as the internal

(Text-fig. 6); tarsal combs 4.2.2. Long. (cauda excluded) 5 mm.

The sexes differ but slightly, antennae of J a little longer than those of Q.

Text-Fic. 5.—Mordellistena consimilis Trxt-FIc. 6.—Mordellistena samoensis,

Blair ; posterior leg. sp. n.; posterior leg.

Upolu: Apia, x1.1924, 1 example; Vailima, i., iv.1925, 3 examples:

Malololelei, x1.1924, 1 example.

Tutuila: Fagasa, 9.1x.1923, 1 example (Swezey and Wilder); and

2 examples (Kellers).

(Paratypes in Bishop Museum, Honolulu, and in Coll. F. Muir.)

Very like New Caledonian specimens of what I take to be WM. dodoneae

Montrouz., but a little larger and darker in colour, pubescence longer and less

depressed, with narrower eyes, longer antennae, and stouter posterior tibiae,

and with different tibial combs. Also allied to M. rosseola Mars., of Japan,

but the latter has the posterior tibiae and tarsi more slender, with the internal

tibial spur less than half as long as the first tarsal joint, and is more closely

punctate both above and beneath.

88 INSECTS OF SAMOA. |

29. Mordellistena buxtoni, sp. n. (Text-fig. 7).

Ferrugineous, covered with moderately dense and long, subdepressed

pubescence. Eyes with base not much shorter than lateral margin, the distance

between them about equal to twice the width of one of them (as viewed from

in front). Antennae long, extending to about the middle of the posterior

femora ; joints 2 to 4 equal in length, short, obconical; joints 5 onwards

longer than 3 and 4 together, and parallel-sided. Pos-

terior tibiae stout, apex about one-third as long as

posterior side; latter with two oblique combs above

the short subapical one, the first extending from close

to apex nearly half way up the tibia and nearly reaching

Text-ric. 7.—Mordel- the middle of the outer face, the 2nd similar, extend-

histena buxtont,sp.n.; ing from a little above the first to a point about midway

DOSE: between the upper termination of the first and the

base of the tibia; a third shorter comb is sometimes present (Text-fig. 7).

Inner spur reaching beyond the middle of the Ist tarsal joint, the outer spur

less than half as long; tarsal combs 3, 2, 2. Cauda elongate, acute.

Long. 3 mm.

Upolu: Apia, i1., i., vill.ix., x1.1924; Aleipata, iv.1924.

Tutuila : 760-1200 ft., iv., vi., xu.1918 (Kellers); Pago Pago, 9.1x.1923

(Swezey and Wilder).

(Paratypes in Bishop Museum, Honolulu, and in Coll. F. Muir.)

Rather paler than M. samoensis, and considerably smaller, differing notably

in the shape of the eyes and in the arrangement of the combs on the posterior

tibiae. The female apparently differs only in the antennae and cauda being

somewhat shorter.

30. Mordellistena swezeyi, sp. n.

Fuscous or fuscotestaceous, with the fore part of the head, the sides of the

thorax and the legs paler, the elytra blackish, with an indeterminate discal pale

streak. Antennae moderately stout, all the joints subequal in length, the

3rd more slender than the 2nd or 4th; pygidium slender, slightly sinuous ;

tibial and tarsal combs black, tibial combs 2 in addition to the short subapical

one, the upper longer comb running from about the apical quarter of the

HETEROMERA, MALACODERMATA, ETC, 89

posterior edge to about the middle of the outer face, at about one-third of its

length ; tarsal combs 3.2.0.

Length : 24 mm. ;

Upolu: Malololelei, vi., xi.1924; Leulomega and Tuaefu, ix.1923 (Swezey

and Wilder).

Tutuila : Pago Pago and Fagasa, 1x.1923 (Swezey and Wilder ; and Kellers).

Manua: Tau, i1x.1923 (Swezey and Wilder).

(Paratypes in Bishop Museum, Honolulu, and in Coll. F. Muir.)

Alhed to M. gracilicauda Blr., of Fiji, but larger and more robust, as well

as differently coloured.

31. Mordellistena kellersi, sp. n.

Black, with an oblique testaceous basal patch on each elytron, including

the shoulder but not reaching the scutellum, and not quite meeting its fellow

at about the basal 3rd; at about the posterior 3rd is a broad transverse band

of golden pubescence, the derm beneath it being obscurely reddish, the suture

remaining narrowly black. Antennae fuscous, stout, extending little beyond

the basal angles of the prothorax, the first four joints slender, the rest stout,

not twice as long as wide. Cauda slender, slightly arcuate, posterior tibial

combs 3, the uppermost much longer than the other two, running nearly across

the outer face and almost reaching the base; tarsal combs 3.2.0.

Length: 2$ mm.

Upolu: Malololelei, vi.1924.

Tutuila: iv.1918 (Kellers); Fagasa, 9.1x.1923 (Swezey and Wilder), 1

example from each locality.

(Paratypes in Bishop Museum, Honolulu, and in Coll. F. Muir.)

Closely allied to M. swezeyr, from which it differs in markings. The

example from Fagasa varies a little from the type in having the head and

thorax largely testaceous. Also allied to M. signatus Mars., of Japan, but

rather larger and more densely pubescent.

32. Mordellistena nigrescens, sp. n.

Dark brown, almost black, with a rather coarse, dark, sericeous pubescence,

the base of the antennae, the anterior legs and all the tarsi testaceous.

Antennae with the four basal joints slender, the others thicker, subequal, rather

90 INSECTS OF SAMOA.

more than twice as long as wide. Cauda straight, moderately stout. Tibial and

tarsal combs much as in M. kellerst m., but the middle tibial comb more inter-

mediate in length.

Length : 24 mm.

Upolu: Tuaefu, ix.1923 (Swezey and Wilder).

Tutuila: iv., vi.1918 (Kellers).

Savaii: Safune, v.1924 (Bryan).

(Paratypes in Bishop Museum and in Coll. F. Muir.)

Resembling the foregoing species in antennal structure and in the comb

formula, but differing entirely in colour.

Family : RHIPIPHORIDAE.

Csiki, Coleopt. Cat. (Junk, pars 54), 1913.

33. Pelecotomoides (Micropelecotoides) fulvosericans Fairmaire.

Pet. Nouv. Ent., ii, p. 279, 1878.

Upolu: Apia, 1.1925; Vailima, vi.1925; Malololelei, vi.1924.

Tutuila: Pago Pago, 14.x11.1925; Amauli Road, 5.1x.1923 (Swezey and

Wilder) ; iv.1918 (Kellers).

A very variable series, alike in size as in colour. Fairmaite gives the

length as from 44-6 mm., whereas the specimens forming the series before

me range from 24-5 mm. In colour, two of the examples from Tutuila

and one from Upolu are almost uniformly rufocastaneous, while the others are

more or less infuscate, in some cases with vague indications of striping on the

elytra. Further examples in the British Museum from Fiji, the Tonga Is.,

and the Ellice Is. include uniformly rufocastaneous and striped forms, while

one female is entirely black with greyish sericeous pubescence and the- usual

faint striping on the elytra. Provisionally I regard all of these as forms of one

variable species, but when longer series become available this opinion may have

to be revised.

Family : ORDEMERIDAE.

Schenkling, Coleopt. Cat. Oedem. (Junk, pars 65), 1915.

In point of numbers, both of individuals and of species, the family

Oedemeridae occupies a prominent position in the coleopterous fauna of

HETEROMERA, MALACODERMATA, ETC. 91

Melanesia and Polynesia. The number of genera represented, however, is but

small, and the differences between them are not always very readily perceived.

The number of species is considerable for an insular fauna, though in appearance

they resemble one another very closely. The difficulty of recognition, and the

considerable range in distribution of many of the species have inevitably

resulted in considerable confusion in determination, and unfortunately, apart

from Seidlitz’s revision of the whole family in Naturgeschichte der Insecten

Deutschlands (1899), no revision of the Pacific fauna exists.

Five species were recorded from Tahiti by Fairmaire (Rev. Zool., pp. 454—

457, 1849), under the genera Nacerdes and Selenopalpus, all but one of which

have since been recorded by Schenkling from Samoa (Arch. f. Nat., Bd. 88,

A. 10, p. 153, 1922.)

The three very similar genera may be distinguished as follows :

1. (2) Mandibles simple at apex, projecting considerably beyond labrum,

and overlapping when closed : . Sessinia Pase.

2. (1) Mandibles bifid at apex, scarcely projecting beyond labrum, inter-

locking when closed. 3

3. (4) Palpi simple in both sexes ; ode Gable iedeminal Scomente in 3: :

sexes scarcely distinguishable 4 : . Ananca Fairm.

4, (3) Last jot of maxillary palpi in g excavate on nen Ride towards

apex; 5th abdominal oe of § abbreviated, exposing

genital armature ; : 5 5 . . Pselaphanca Blair.

34. Ananca kanack Fairmaire (Text-fig. 8).

Rev. Zool. (2), I, p. 454, 1849 (Nacerdes).

Sessinia kanak Fairm., Schenkling, Cat. Col. Oedem, p. 33, 1915.

Upolu: Apia, 14.ix.1923, 15 examples (Swezey and Wilder).

Tutuila: Pago Pago, 14.1x.1923, 1 example (Steffany).

Readily recognisable on account of its large size (about 18 mm.), in con-

junction with the form and coloration of the thorax, which is depressed dorsally,

with a narrow median strip and a lateral strip on each side bluntly raised, these

raised areas being fuscous. The sexual differences are very slight, the 5th

ventral segment being entire, bluntly rounded at the apex and usually closely

applied to the pygidium. If these be separated, the 6th ventral in the ¢ is seen

to be flat, with a deep median emargination. Fairmaire remarks that, among

his four species of Nacerdes, he has not been able to find a single ¢.

The British Museum possesses specimens from Tahiti, Fiji, the Solomon

92 INSECTS OF SAMOA. .

Is., New Caledonia, Mysol, ete., with one example labelled “ Sandw. Is.” (Fry

Coll.), no doubt in error for “Samoa Is.” * Fairmaire records this insect as

flying in the evening in the huts, and

as having once been taken on Hibiscus

flowers, but rare.

35. Ananca bicolor Fairmaire.

Op. cit., p. 456 (Nacerdes).

Samoa (Swale).

Tutuila: Pago Pago, iv.1918

(Kellers).

Specimens also from Tahiti,

Tonga, Hllice Is., and New Hebrides.

Much resembles A. nigrupennis

Fauv., of New Caledonia, but, in

addition to colour differences (the

head and antennae are flavous in the

latter, but black in A. bicolor), the

thorax in A. nigripenmis, though very

similarly punctate has the space

between the punctures smooth and

in A. bicolor the general surface of the thorax is finely alutaceous.

TExt-FIG. 8.—Ananca kanack Fairmaire.

shining ;

36. Ananca decolor Fairmaire.

Op. cit., p. 455 (Nacerdes).

Upolu: Apia, v., vi.1924, 14.1x.1923 (Swezey and Wilder); ‘Lalomanu,

x1.1924; Tafua Volcano, 1917 (Swale).

Tutuila: Pago Pago, 12.viil.1924, 30.ix.1923 (Swezey and Wilder).

The Samoan series of this species differs constantly in coloration from

those from Tahiti, the Ellice Is., and the Marquesas group, being darker

(brownish), but appears to agree with them in sculpture. Schenkling (loc. cit.)

considered iS. decolor (probably incorrectly identified) to be practically

* See Uloma cavicollis (p. 76).

HETEROMERA, MALACODERMATA, ETC. 93

synonymous with S. livida F., and Fairmaire himself owned to some difficulty

in distinguishing his new species from small forms of S. livida ; unfortunately

this author does not appear to have observed the mandibles. J am indebted

to M. Pierre Lesne for kindly comparing a specimen from the Marquesas Is.

with the type in the Paris Museum.

37. Pselaphanca lateritia Fairmaire (Text-fig. 9).

Rev. Zool. (2), 1, p. 457, pl. 11, fig. 5, 1849 (Selenopalpus lateritius) ;

Blair, Ann. and Mag. Nat. Hist. (9), xx, p. 165, 1927.

Upolu: Malololelei, vi.1925, 1 9 (Wilder).

The British Museum series is from Tahiti, Rara-

tonga, and Moorea, Society Is., Feb. 1913 (C. 8. Betton).

This species was recently obtained in some numbers

at light on Tahiti, sea level to 2000 ft., 111.,1v.1925, and Tyxr-r1e. 9.—Pselaphanca

Raiatea, sea level (C. L. Collenette and Miss HK. L. — /ateritia Fairmaire ; max

oars illary palpus, 3.

Cheesman, St. George Expedition).

38. Sessinia livida Fabricius.

Syst. Ent., p. 14, 1775 (Lagria).

Upolu: Apia, v.1x.1924, 21 examples; Aleipata, Lalomanu, x1.1924,

1 example; Tafua Volcano, 2 examples (Swale).

Tutuila: Pago Pago, ix.1924, 2 examples (Swezey and Wilder).

Ellice Is.: Funafuti and Nui, ix.1924.

Tonga: Nukualofa, 11.1925, 4 examples.

This is a rather widely distributed Polynesian species, ranging westwards

to Fiji and the Ellice Is.; type locality, Tahiti. In the specimens before me,

there seems to be considerable variation, both in size and in puncturation, but I

am unable to separate them specifically.

The sexes, as in Ananca, are difficult to distinguish without dissection, but

the 5th ventral segment in the female is a little more pointed than in the male.

Further, in general appearance, the resemblance between these genera is very

close, but in Sessinia Pasc., of which this species is the genotype, the mandibles

are simple at the apex, with the tips overlapping when closed, and more

gradually curved along their outer side so as to project considerably beyond

94 INSECTS OF SAMOA. -

the labrum ; in Ananca the tips of the bifid mandibles interlock and scarcely

project beyond the labrum. The puncturation of thorax and elytra in Sessinia

is usually much finer, and the elytral costae are scarcely indicated.

Family : CIIDAE.

Cioidae, Dalla Torre, Coleopt. Cat. (Junk, pars 30), 1911.

39. Cis savaiiensis, sp. n.

d, oblong, blackish piceous, glabrous; head with the front margin angularly

produced and up-turned above each antennal base ; thorax coarsely and closely

punctate, scarcely shining, the front margin strongly rounded but not pro-

duced above head, a little flattened in the middle, but not emarginate, lateral

margins rather widely explate and reflexed ; all angles rounded ; elytra shining,

with large punctures irregularly distributed, usually appearing more or less

hexagonal in shape.

Long. 1} mm.

Savai: Safune, rain forest, 2000-4000 ft., 3.v.1924, 2 examples (Bryan).

(Paratype in Bishop Museum, Honolulu.)

Comparable with C. porcatus Shp., of Hawaii, with which it agrees in the

shape of the head, but the first joint of the club of the antennae not noticeably

smaller than the middle one. The thorax is much more coarsely and closely

punctate than in the Hawaiian species, with distinct reflexed lateral margins.

The elytra are entirely different ; the punctures are larger than those of the

thorax, but much more widely spaced, sometimes almost adjacent one to

another, sometimes with comparatively wide intervals; the punctures deeply

set, with interspaces rather strongly convex, giving each puncture a more or

less hexagonal appearance.

40. Cis tutuilensis, sp. n.

Oblong, brownish testaceous, glabrous; anterior margin of head lobate

and reflexed above each antennal base; thorax moderately nitid, finely and

rather remotely punctate, anterior margin strongly rounded but not produced,

emarginate in middle; lateral margins narrowly but distinctly reflexed.

HETEROMERA, MALACODERMATA, ETC. 95

Elytra with irregular double puncturation, the larger punctures very shallow,

the interstices shining, with scattered, very fine punctures.

Length: 14 mm.

Tutuila: Pago Pago, 9.1x.1923, 2 examples (Swezey and Wilder).

(Paratype in Bishop Museum, Honolulu.)

Allied to C. pacificus Sharp, which it resembles in the form of the head and

in the puncturation both of the thorax and elytra, except that, in the case of

the larger punctures of the elytra, there is less tendency to seriate arrange-

ment. It differs, however, in the shape of the elytra, which in C. pacificus are

parallel-sided for about two-thirds of their length, then very bluntly rounded

at the apex. In C. tutwilensis, they are more rounded at the sides, widest about

the middle, thence sharply narrowed to form an acutely rounded apex. Still

more closely allied is C. cheesmanae, recently described by me* from a specimen

from the Marquesas Is., but the latter is larger and more robust, with the sides

of the thorax more strongly rounded and more narrowly reflexed. From the

Kuropean C. nitidus Hbst., it differs more widely in having the side borders of

the thorax more strongly reflexed and comp lovely. visible when the insect is

viewed from above.

Scolytocis, gen. nov.

Antennae 9-jointed, 3rd jomt long and slender, 4th very small, 5th and

6th submoniliform, 7th and 9th forming a short compact club. Tuibiae sparsely

and finely denticulate on outer side.

Genotype, S. samoensis, sp. n.

A peculiar genus, resembling Tropics Scott (Trans. Linn. Soc., xix, p. 30,

Fig. 3, 1926) in the short antennae with broad compact club, and also in the

denticulations of the outer edge of the tibiae. From Tropicis, however, the

present genus differs in there being one joint less in the funiculus of the

antennae, and in the non-carinate elytra. The tarsi appear to be 3-jointed,

though there may be a minute basal joint.

41. Scolytocis samoensis, sp. n.

Testaceous, glabrous, moderately nitid. Head with the supra-antennal

lobes little developed, not reflexed, not more prominent than the clypeus

* Annals and Mag. Nat. Hist. (9), xx, p. 167, 1927.

96 INSECTS OF SAMOA.

between them ; labrum exposed. Antennae very short, joints 3 to 6 together

only about half as long as the club. Prothorax strongly arched in front, widest

a little before base, the sides finely marginate, but margins not teflexed and

running gradually into the arch of the anterior edge; basal angles completely

rounded ; disc strongly, not very closely punctate, the interspaces nitid, with

minute puncturation discernible only under strong magnification. Elytra

seriate punctate, punctures large but rather shallow, with distinct intervals

between them; the five dorsal striae turn a little outwards towards the base,

the 5th meeting the 8th at the shoulder, 6th and 7th abbreviated; humeri

completely rounded, the upper epipleural carina running gradually into the

basal carina; epipleurae gradually narrowed behind, disappearing about the

middle; apex rather acute. Wings ample. First abdominal sternite rather

longer than the next two together, intercoxal process narrow, acute, finely

bordered.

Length: 1 mm.

Tutuila: Pago Pago, 9.1x.1923, 1 example (Swezey and Wilder).

(Type in Bishop Museum, Honolulu.)

The single example is very defective, with but one remaining tarsus, yet

presents so many interesting features as to justify description. The absence

of a frontal tubercle and of a tubercle on the first abdominal segment, in

conjunction with the slight development of the front of the head indicate that

the type is a female.

Family : LYCTIDAE.

42. Lyctus brunneus Stephens.

Til. Brit. Ent. Mandib., iti, p. 117, pl. 18, fig. 4, 1830 (England).

L. disputans Walker, Ann. Mag. Nat. Hist. (3), 11, p. 206, 1858 (Ceylon).

L. costatus Blackburn, Trans. R. Soc. S. Austral., x, p. 265, 1888 (Australia).

L. rugulosus Montrouzier, Ann. Soc. Ent. France, 4, 1, p. 266, 1861 (Woodlark Is.),

L. carolinae Casey, Ann. N. York Ac. Sci., vi, p. 18, 1891 (U.S.A.).

Upolu: Apia, v., vi.; Malololelei, 25.1v.1924.

Tutuila: Leone Road, 24.11.1926 (Judd.).

Commonly known as the Powder-Post Beetle, this destructive woodborer

is now almost universally distributed, and has been many times described from

HETEROMERA, MALACODERMATA, ETC. 97

specimens from different parts of the world. Stephens’s original specimen

was taken in a wasp’s nest.

43. Minthea rugicollis Walker.

Ann. Mag. Nat. Hist. (3), ii, p. 206, 1858 (Ditoma).

M. similata Pascoe, Journ. Ent., ii, p. 141, 1863 (Saylee).

Lyctus seriehispidus Kiesenwetter, Deutsch. Ent. Zeits., xxii, p. 319, 1879 (Japan).

Eulachus hispidus Blackburn, Trans. R. Dublin Soc. (2), ii, p. 141, 1885 (Hawaii).

Tutuila: Amauli, 5.1x.1923, 1 example (Bryan).

Except that it does not seem to have been recorded from the New World,

this species, of which the type locality is Ceylon, appears now to be almost

as widely spread as the preceding.

Family : BOSTRYCHIDAE.*

44. Rhizopertha dominica Fabricius.

Ent. Syst., 1, 2, p. 359, 1792 ; Lesne, Ann. Soc. Ent. France, Ixvi, figs. 13, 21, 276, p. 332, 1897.

Bostrichus moderatus Walker, Ann. Mag. Nat. Hist. (3), iii, p. 260, 1859.

(2) Bostrichus eaiguus Walker, loc. cit.

Upolu: Apia, 11.1925, 1 example.

Found throughout the warmer parts of the world, occasionally in Europe

and even in Britain, but introduced with timber, grain, etc., and not established.

The last two names quoted above are additional to the synonymy given by

Lesne.

45. Xylothrips religiosus Boisduval.

Voy. Astrol., p. 460, 1835; Lesne, Ann. Soc. Ent. France, xix, p. 624, ff. 32, 473, and 475~

477, 1901.

Upolu: Apia, throughout the year, by almost all collectors ; Malololelei,

1 example.

Tutuila: Fagasa (Swezey and Wilder); Leone Road (Judd).

Widely distributed in Melanesia and Polynesia, as well as in Northern

Australia and Hawaii. Lives in the Bread-fruit tree (Artocarpus incisa) and in

Hibiscus tiliacea, and is also destructive to worked woods of various kinds

(Fairmaire).

* A useful revision of this family by P. Lesne appeared in the Ann. Soc. Ent. France,

1896-1909.

98 INSECTS OF SAMOA.

46. Xylopsocus castanoptera Fairmaire.

Apate castanoptera Fairmaire, Rev. Zool. (2), ii, p. 50, 1850; Lesne, op. cit., p. 635 (Xylopsocus).

Samoa (Swale).

This species, the type of which was obtained in Tahiti, is recorded by Lesne

from New Guinea, Sunda Is., Assam, Madagascar, and KE. Africa. It also occurs

in Hawai and Fiji.

Family : ANOBITDAE.

Pic, Coleopt. Cat. (Junk, pars 48), 1912.

47. Lasioderma serricorne Fabricius.

Ent. Syst., i, p. 241, 1792.

Tutuila: Pago Pago, 9.1x.1923, 1 example (Swezey and Wilder).

A cosmopolitan storehouse pest, commonly known as the “ Cigarette

Beetle ” on account of the damage caused by it to dried tobacco.

Family : LYCIDAE.

Melaneros Fairmaire.

Fairmaire, Petit Nouv. Ent., u, p. 178, 1879 ; Journ. Mus. Godeffr., xiv, p. 100, 1879.

In this genus as originally proposed were placed six species, one stated to

have been found in Samoa, while the other five were said to have been met

with in Fiji and Tonga Tabu. By the kindness of Herr Hans Gebien and the

authorities of the Hamburg Museum, I have been able to examine the types of

four of these species, viz. M. acuticollis, M. atroviolaceus, M. quadraticollis,

and M. angustiformis ; the types of M. praelongus and M. lugubris apparently

cannot now be found at Hamburg.

The types examined bear the following labels :

M. acuticollis, Upolu, No. 6013 (1 9).

M. atroviolaceus, Upolu, No. 6013 (a series of 2 fg and 2 99).

M. quadraticollis. Three specimens numbered respectively 11399, 4239,

and 4512, the two former from Tonga, the last without locality.

M. angustiformis, Tonga, No. 4239 (1 ).

HETEROMERA, MALACODERMATA, ETC. 99

This material, however, seems to represent two distinct genera separable

as follows :—

Upper surface clothed with moderately dense and long dark pubescence ;

alternate intervals of elytra not strongly costiform ; head more or

less exposed beyond prothorax ; 3rd joint of antennae about equal

to 4th. (Genotype, M. atroviolaceus Fairm.) ; . Melaneros Fairm.

Upper surface glabrous; alternate intervals of elytra stronely costate :

head almost completely concealed beneath prothorax; 5rd joint

ot antennae only about half as long as 4th. (Genotype, M.

acuticollis Fairm.) . : ‘ : : : : : . Samoaneros, gen. nov.

Untortunately M. acuticollis, the species placed first by Fairmaire, does not

agree with his generic description in which the 3rd joint of the antennae is said

to be not less than the following ; I have therefore selected M. atroviolaceus as

the type of Melaneros.

48. Melaneros atroviolaceus Fairm (Text-fig. 10).

Loe. cit.

Upolu: Malololelei, 5.1., 25.11., 18.iv., 25.vi., 28.xi.1924; Vailima, vi.1924 ;

Tafua Volcano, 1917 (Swale).

Savai: Safune, lowlands to 1000 ft.,

1.v.1924 ; rain forest, 2000-4000 ft., 2-13.v. ;

Salailua, Lowlands to 1000 ft., 16.v.1924

(Bryan).

The type was stated to be from Fiji,

but each specimen in the type series from

Hamburg (No. 6013) bears the label

“Upolu,” and agrees exactly with the

material now before me. Further, in the

considerable amount of material received

of late years from Fiji, both by the Museum

f Trext-Fic. 10.—Melaneros atroviolaceus

and by the Imperial Bureau of Entomology, Fairmaire.

nothing resembling the present species has

ever appeared, so that it may, I think, safely be assumed that the Fiji record is

erroneous.

Ves

Go

100 INSECTS OF SAMOA.

49. Melaneros quadraticollis Fairmaire, loc. cit.

M. angustiformis Fairm., loc. cit.

Upolu: Malololelei, iv., vi.1924, 26.iv. (Bryan), 24.vi. (Armstrong) ; Vaea,

1100 ft., 25.vi. (Bryan).

Savaii: Safune, lowlands to 1000 ft., 1.v.1924, and rain forest, 2000-4000

ft., 2.v.; Salailua, 22.v.1924 (Bryan).

Tutuila: Pago Pago, 30.1x.1923 (Swezey and Wilder), 18.vi.1924 (Bryan).

Manua: Tau, 20.11.1926 (Judd). |

M. quadraticollis, as stated above, is represented in the series at Hamburg

by three specimens, but only one of these, No. 11399 with the locality ‘‘ Tonga,”

agrees with the description in the form of the thorax “ angulis posticis nullo

modo productis.” The second specimen, No. 4239 also with locality “ Tonga,”

is undoubtedly conspecific with the individual, bearing the same number and

data, purporting to be the type of M. angustiformis, which, im my opinion, in

spite of the posterior angles of the thorax being somewhat produced, is

specifically inseparable from No. 11399.

The third example, No. 4512, without “type” label or indication of

locality, is entirely different, being what I consider a small example of M.

acuticolis Fairm. It is, however, this example, though now ranged with M.

quadraticollis, that accords best with Fairmaire’s description of M. angustiformis.

M. angustiformis Fairm. The unique type at Hamburg bears the number

4239, with locality (in my opinion erroneous) “ Tonga,’ but this specimen is

undoubtedly conspecific with the similarly labelled specimen of M. quadratecolls,

and furthermore does not accord with the description of M. anqustifornus,

which is stated to have the posterior angles of the thorax “sat acute divaricatis ”

and the elytra “‘ sutura et utrinque costulis 4 leviter elevatis, intervallis biseri-

atim grosse punctatis,” data which would appear to have been taken from the

third specimen, No. 4512, now placed with M. quadraticollis. This individual,

however, is entirely distinct, coming into the proposed new genus Samoaneros,

and being in my opinion but a very small example of S. acuticollis Fairm. In

view, therefore, of this ambiguity concerning the identity of M. angustiformas,

and its apparently composite character, together with the fact of its putative

type being indistinguishable from M. quadraticollis, it seems best to consider

it as synonymous with this species.

HETEROMERA, MALACODERMATA, ETC. 101

M. quadraticollis is very similar in sculpture to Plateros robustus, KIne., of

Malacca, but in the latter species the 3rd antennal joint is much shorter than the

4th, and the thorax lacks the anterior median carina.

Samoaneros, gen. nov.

Very similar in facies to Melaneros Fairm., having the body usually black

or blackish piceous and elytra dark violet blue, but differmg in having the

upper side glabrous or almost so, while the under side, legs, and antennae are

clothed with a fine, depressed, fulvous pubescence. The head is more com-

pletely concealed from above beneath the prothorax, and the 3rd joint of the

antennae is only about half as long as the 4th. The elytra are usually much

more strongly costate, the suture, 3rd, 5th, and 7th interstices being strongly

raised, the intermediate interstices usually irregular and ill-defined. The

thorax has a strong median carina on the anterior half which divides posteriorly

to enclose a deep, broad sulcus communicating behind with the transverse

basal sulcus. In Melaneros, the anterior costa is relatively feeble and dis-

appears posteriorly, while the median posterior sulcus.is narrow, without raised

borders, and closed behind.

From Plateros Bourg. the new genus differs owing to the stgge: surface being

glabrous, and the elytra strongly costate.

Genotype, Melaneros acuticollis Fairm.

50. Samoaneros acuticollis Fairmaire (Text-fig. 11).

Loe. cit. (Melaneros).

Upolu: Malololelei, u., iv., vi., vu.1924, 18 examples; Aleipata,

Lalomanu, x.1924; Tuaefu, 16.1x.1923, 2 examples (Swezey and Wilder) ;

Afiamalo, 11.vu.1925, 2 examples (Wilder).

Savail: Safune, from lowlands to the rain forest, 2000-4000 ft., 23

examples ; Salailua, 3 examples, all v.1924 (Bryan).

Tutuila: Leone Road, 24.11.1926, 1 example (Judd); Fagasa, 9.1x.1923,

2 examples; and Pago Pago, 18.1x.1923, 1 example (Swezey and Wilder).

Manua: Tau, 20, 21.11.1926, 6 examples (Judd); Ofu, 27.11.1926, 2

examples (Judd).

102 INSECTS OF SAMOA.

A very puzzling series ranging in length from 5 to 10 mm. The shape of

the thorax also varies considerably, being much more strongly transverse in

some examples than in others, and in some

having the sides more contracted in the

middle and the posterior angles more diver-

gent and more strongly produced. The

elytral sculpture is no less varied ; usually,

as in the type, the double series of foveae

between the costae are strongly transverse

with fairly regular parallel divisions, form-

ing more or less regular secondary costae

between the primary ones. Frequently a

secondary costa is interrupted and irregular,

and occasionally disappears altogether,

leaving a single series of transverse foveae

between the primary costae, as in the genus

Text-Fig. 11.—Samoaneros acuticollis ; : :

Waiwsire: Xylobanus. Rarely, in large specimens,

the foveae are larger and more quadrate,

but the five examples of this form before me, no two of which are alike, show

as wide a range of variation as the more numerous finely foveolate form, and

come from the same localities, so that for the present I am unable to consider

them as other than aberrant individuals.

M. praelongus Fairm. is perhaps but a small form of the present species,

with the anterior margin of the thorax rounded.

51. Samoaneros muirl, sp. n.

Fulvous, with the antennae (except the three basal joints), tarsi and disc

of the elytra smoky brown.

Length : 7-8 mm.

Tutuila: centre of island, 900-1200 ft., 1 g, 1 9, eastern end of island,

1070 ft., 1 g, 21.vi.1918 (Kellers).

(Paratypes in Bishop Museum, Honolulu, and in Coll. F. Muir.)

In form and sculpture very similar to S. acuticollis Fairm., but differing

entirely in colour. The blackish-brown colour occupies all the dorsal area of

the elytra except the extreme base, the anterior portion of the suture, and the

HETEROMERA, MALACODERMATA, ETC. 103

lateral border, 2.e. it includes the greater part of the 3rd dorsal costa, but

scarcely extends beyond it. That it is not a colour variety of S. acuticollis is

shown by slight differences in structure, e.g. the thorax is almost straight in

front, more constricted in the middle, and nearly as wide in front as at the base,

the double series of foveae of the elytral intervals are finer, and the external

(subhumeral) interval is wider and more irregularly punctate towards the base.

Moreover, the normal small form of S. acuticollis occurs also on Tutuila, and the

differences apart from colour, though slight, are evident enough.

Melaneros lugubris Fairm., the type of which, as already stated, apparently

is no longer to be found at Hamburg, is probably intermediate in colour

between Samoaneros mutt and S. acuticollis, being described as “ fuscus, parum

nitidus, subtus fusco-lutescens, . . . elytrorum costis externis pallidioribus ; ”

but it differs in having the thorax almost pentagonal.

Family : MELYRIDAE.

52. Carphuroides pectinatus Sharp.

Trans. R. Dublin Soc. (2), ti, pp. 157, 241, 284, t. 4, fig. 20, 1885; Champion, Annals and

Mag. Nat. Hist. (9), xii, p. 46, pl. 1, figs. 14, 14a, 1923.

Samoa, 1 § (Whitmee, 1875).

Described from a specimen from Hawaii, as doubtfully indigenous.

Champion notes the occurrence of the species in Timor, Borneo, China, and

N. India.

53. Carphurus flavipes, sp. n.

Black, with the basal six joints of the antennae, the base of the thorax, an

indeterminate band across the middle of the elytra, and the legs yellow. Head

almost impunctate, antennae slender, feebly serrate, basal joint rather short,

swollen, 2nd joint almost as thick, about as long as wide, 3rd and 4th succes-

sively narrower, thence slightly increasing in thickness to apex. Thorax about

as long as wide, the greatest width in front and rather strongly narrowed to

base ; anterior part convex, but broadly depressed behind, the base itself feebly

rounded and bordered. Elytra much wider at base than base of thorax, nearly

twice as long as together broad, the sides almost parallel, the disc strongly and

104 INSECTS OF SAMOA.

densely punctate and not very densely pubescent. Four segments of the

abdomen exposed beyond elytra, clothed with a rather scanty flavous

pubescence.

Length : 24 mm.

Upolu: Malololelei, iv.1924, 1 9.

In the absence of the 3, it is not possible to determine the position of this

species in the genus, but it is probably near C. Rouyerz Pic.

Family : CLERIDAE.

Schenkling, Coleopt. Catal. (Junk, pars 23), 1910.

54. Cylidrus cyaneus Fabricius.

Mant., 1, p. 126, 1787.

Savai: Safune, lower forest, 1000-2000 ft., 11.v.1924, 1 example (Bryan).

Samoa (Whitmee, 1875).

A widely distributed species in the tropics of the old world, ranging from

Tahiti to Central Africa. It has been reported to prey upon Xylothrips religiosus

Boisd., and probably upon other Bostrychidae.

55. Tarsostenus univittatus Rossi.

Faun. EHtruse., i, p. 147, 1792.

Upolu: Apia, v.1924, 1 example.

Another cosmopolitan species, known in Europe to be predaceous upon

Lyctus spp., which it seems to have followed almost all over the world.

56. Necrobia rufipes De Geer.

Mém., v, p. 165, pl. 15, fig. 4, 1775.

Upolu: Apia, iv., v., xii.1924 (in dried currants from New Zealand) ;

Malololelei, 28.vi.1924 (Armstrong) ; Aleipata, Lalomanu.

Sava: Fagamalo, 10.11.1924.

Tutuila: Fagatoga, 29.11.1926 (Judd).

HETEROMERA, MALACODERMATA, ETC. 105

Manua: Tau, 25.11.1926 (Judd).

Niue, 6.viii.1918 (Kellers).

Commonly known as the “Copra-beetle,” and carried everywhere by

shipping ; frequently occurs also among old bones, hides, etc., and as a predator

amongst various articles of commerce, including cereals.

Family : RHIPICHRIDAE.

57. Callirhipis femorata Waterhouse (Text-fig. 12).

Trans. Ent. Soc. Lond., p. 386, 1877 ; Fairmaire, Ann. Soc. Ent. France, (6), i, p. 271, 1881.

% C. samoensis Pic, Melanges exot.-ent. fasc. 35, p. 20, 1921.

Samoa (Coll. Whitmee, type).

UpolueeApian 12love, Vis 1x.

1924; Malololelei, 22.iv.1925. S

Tutuila: Fagatoga, 29.11.1926 ie

(Judd), and xii.1918 (Kellers).

Nassau Is.

Appears to be practically con-

fined to Samoa, whence it has been

received in almost every collection

sent in. Pic’s type was a Q, of

which sex I have only two specimens

before me, as compared with 20 3g;

but in the brief description there is

nothing to show that it is distinct FA

from C. femorata W., though pro- Trxt-r1e. 12.—Callirhipis femorata Waterhouse.

bably not fully mature.

From outside the Samoa Group, I have seen only a single 4, from Nassau

[s., in the Union Group (Buxton and Hopkins).

106 INSECTS OF SAMOA.

Family : BUPRESTIDAE.

Kerremans, Wytsman’s Gen. Insect. Buprest., 1902.

» Monog. Buprest., Vols. i-vii, 1904-1914.

Obenberger, Coleopt. Cat. (Junk, pars 84), 1926 (incomplete).

58. Callistroma samoensis Saunders (Text-fig. 13).

Cist. Ent., i, p. 222, 1874 (Paracupta).

C. oxypyra Fairmaire, Pet. Nouv. Ent., ii, p. 153, 1877.

Upolu: Apia, 16.11.1925.

Savau: Safune, 15.v.1924 (Bryan).

Samoa: 1897 (Whitmee).

Saunders’s type is in the British Museum ;

that of Fairmaire is probably at Hamburg,

though a specimen labelled “ Type,” received

from Fairmaire, is in the Kerremans Coll. at

the British Museum.

59. Cyphogastra abdominalis Waterhouse.

Ann. Mag. Nat. Hist. (5), xv, p. 881, May 1885.

Cyphogastra aurwentris Kirsch, Berl. Ent. Zeit., xxix,

" Bd., p. 114, July 1885; Heller, Arch.

x Nat., 88, Bd., A, 10, p. 153, 1922.

gloriosa von Heyden (? Gestro), Abhandl.

Senckenb. Naturforch. Gesell., 36 Bd.,

Text-Fie. 13.—Callistroma samoensis p. 171, 1915.

Sndrs,

NS

‘e

B Hopkins. a

Upolu: Apia, vii.1924, 7 examples, and

24.x11.1922, 1 example (Armstrong) ; 18.v.1917 (Swale) ; 1.—viii.1921 (O’Connor).

Originally recorded from Duke of York Is. and otherwise known only from

the Bismarck Archipelago and the Admiralty Group; its occurrence elsewhere

only in Samoa is remarkable. Whether it be really distinct from C. gloriosa

Gestro, of New Guinea, is a point that I cannot venture to discuss without

going into the whole question of species, subspecies, etc., in this genus; pro-

visionally I follow Kerremans in separating the two species.

(N.B.—C. abdominalis Waterh. (Ann. Mag. Nat. Hust. (6), x, p. 412, 1892)

of Damma Is., is a very different insect, and is identical with C. staudingere

Kerr. (Mém. Soc. Ent. Belg., vii, p. 65, 1900).)

HETEROMERA, MALACODERMATA, ETC. 107

60. Chrysobothris chrysonota Deyrolle (?).

Ann. Soc. Ent. Belg., vi, p. 110, 1864.

Upolu: Apia, 18.iv.1924, 1 example (defective).

The single specimen, lacking the tips of both elytra, agrees with an example

from Duke of York Is., so determined in Coll. Kerremans, in having the

metallic spots on the elytra cupreous, the abdomen beneath cupreous on

the sides and aeneous or viridiaeneous in the middle, the emargination of the

terminal segment subtruncate, and the median carina scarcely projecting into

it; but differs in having the thorax more nitid, much less strongly rugose trans-

versely, and the elytra more strongly punctate. In thoracic sculpture it closely

. resembles C. auropunctata Deyr. (det. Kerremans), but the latter has the elytral

spots greenish golden, the puncturation much finer and closer, and the under

side bluish-green.

It is unfortunate that this species cannot be exactly determined, since it

marks a distinct advance eastward of the Melanesian section of this widely

distributed genus. Geographically its nearest allies occur in Woodlark Is., but

to only one of these, C. purpureicollis Kerr., does it appear to be at all closely

related ; the species in question differs, inter alia, in having the elytra more nitid

and more finely and sparsely punctate, the sub-sutural carina less sharply

elevated, the metallic spots greenish, and the last ventral segment with a strong

median projection in the terminal emargination.

61. Agrilus indignus Fairmaire.

Rev. Zool. (2), I, p. 353, 1849.

Upolu: Apia, 7.v.1924, vi., vu.1925, 12.1x.1923, x.1924, 1 example each

date ; Tafua Volcano, 19.vi. (Swale).

Tutuila: Pago Pago, 2, 14.xi1.1924, on leaves of Hibiscus tihacea,

16 examples, 1x.1923, 3 examples (Swezey and Wilder), 19.iv.1924 (Bryan) ;

Amauli, 5.1x.1923 (Bryan); Leone Road, 18.ix.1923, 1 example (Swezey and

Wilder) ; Afono Trail, 25.1x.1923, 1 example (Swezey and Wilder).

Tonga: Nukualofa, 23.11.1925, 3 examples, and Neiafu, Vavau, 9.111.1925,

1 example.

A Polynesian species, the type of which was taken in Tahiti; it was

108 INSECTS OF SAMOA,

recently collected in numbers in Tahiti and the Marquesas Group by the members

of the “St. George ’’ Expedition.

62. Agrilus samoensis, sp. n. (Text-fig. 14).

Kiongate, dark bronze coloured, with front of head and sides of thorax

aeneous, under side greenish-bronze, elytra with somewhat indistinct macu-

lations of pale pubescence.

Frons moderately flat, with a transverse low ridge, with reduced sculpture,

about halfway up. Thorax widest a little behind its front margin, with sides

feebly sinuate, posterior angles right angles, and with

‘\ ) wea a strong curved carina; disc finely ridged trans-

: versely, with fine punctures between the ridges,

median line with two impressions. Scutellum trans-

| versely carinate, the ends of the carina curving

Re rearwards. Hlytra rounded and denticulate at the

tips, with the usual imbricate sculpture very fine; a

scanty, ashy-grey pubescence on an indistinctly more

metallic ground produces the following patterns: a

band along the suture behind the scutellum, curving

round the latter to the basal impression; a pair of

very indistinct spots obliquely placed, one just behind

the basal impression, the other behind and to the

outside of it; a similar pair of spots at about one-third of the length, and a

more distinct pair behind the middle; about halfway between this and the

tip, an oblique row of three confluent spots forming a zigzag band, the spot

nearest the suture the largest, and just before the tip an indistinct oblique

band; the tip beyond this band more brilliantly bronzy. Posterior tarsi

longer than half the tibia, the points of the imner branches of the claws

moderately approximate.

Long. 8 mm.

Upolu: Apia, x.1924; Malololelei, iv., 21.vi., 28.xi.1924, 1 example on

each date.

(Paratype in Bishop Museum, Honolulu.)

Closely allied to A. evanidus C. and G., of Java, according to a specimen so

determined and marked “ compared with type’ by Saunders ; but the species

v7) HopKins

te

Text-Fia. 14.—Agrilus

samoensis, Sp. N.

HETEROMERA, MALACODERMATA, ETC. 109

so determined by Kerremans, both in his own collection and in that of Mr. H.

HK. Andrewes, now in the British Museum, is a very different insect, very close

to, if not identical with, A. acutus Thunb. Saunders’s specimen differs from the

Samoan species in its greener colour, and in having the scutellar carina straight,

the imbricate sculpture of the elytra distinctly coarser, the pubescent macula-

tion different, and the tips of the elytra redder. The maculation on the anterior

half of the elytra is more irregular and formed of a greater number of smaller

spots, while the posterior zigzag band is produced backwards along the suture

to meet or nearly meet the subapical band. Other closely allied species are

A. tonkineus Kerr., A. oblatus Kerr., A. marmoreus Deyr., and A. occipitalis Esch.

LIST OF TEXT-FIGURES.

1. Apteromerus convexus Fairmaire.

ad 2. Menimus samoensis, sp. 0.

3. Tagalus swalet, sp. 0.

55 4. Chariotheca suleipenms, sp. n.

5. Mordellistena consimilis Blair ; posterior leg.

$5 6. me samoensis, Sp. 0. a

7. “3 buxtont, sp. n. ae By

Bs 8. Ananca kanack Fairmaire.

» 9. Pselaphanca lateritia Fairmaire ; maxillary palpus, ¢.

» 10. Melaneros atroviolaceus Fairmaire.

» 11. Samoaneros acuticollis Fairmaire.

» 12. Callirhipis femorata Waterhouse.

» 13. Callistroma samoensis Sndts.

» 14. Agrilus samoensis, sp. n.

ELATERIDAE

By R. H. van ZwWALUWENBERG

(With 10 Text-figures.)

Tue family Elateridae is represented in the present collections from the British

Museum and the Bishop Museum by fourteen species, distributed among eight

genera, two of which are here described as new. Six new species appear to be

endemic in the Samoan Islands: the remaining eight species are known also

to occur in other localities, as is shown in the following table.

SPECIES. Kyown DIstRIBUTION OUTSIDE SAMOA.

Lacon modestus (Boisd.) . 2 : . Cosmotropical.

Propsephus tongaensis (Cand.) . é . Tonga, Phoenix Is.

Propsephus rujipes (Schwarz). ; . Tonga.

Propsephus euaénsis (Schwarz) . : . Tonga.

Propsephus major (Cand.) . 4 ; 2 obit.

Simodactylus cinnanvomeus (Boisd.) — . . Throughout Oceania.

Monocrepidius pallipes (Esch.) . 3 . Phoenix Is., Hervey Is., Society Is., Polynesia

generally.

Melanoxanthus melanocephalus (Fab.) . - Southern Asia and adjoining islands from Arabia

to China, Polynesia.

One additional species, Simodactylus tasmani Cand., previously known to

occur in Fiji, is here noted as having been found in the Ellice group, but is not

included in the material from Samoa.

The literature on Samoan Elateridae is extremely scanty; only two

references are known to me:

1901. O. Schwarz: Deutsche Ent. Zeitschr., Jahrg. 1901, p. 351. “Von (Anchastus) Psephus

tonga nsis liegen mir vom Hamburger Museum (Mus. Godeffroy) 2 Exemplare auch aus

Samoa vor.”

1908. D. Sharp: Fauna Hawaiiensis, ii, p. 369. Notes that [schiodontus hawaziensis Cand.

(Elater. nouv., ui, p. 42, 1881) is wrongly labelled as coming from the Hawaiian Islands, the

teal locality being the Samoan Islands.

111

112 INSECTS OF SAMOA.

AGRYPNINAE.

1. Lacon modestus (Boisduval).

Voy. Astrolabe, Col., p. 108, 1835 (Agrypnus) ; Fauna Océanie, p. 108, 1835.

Four specimens: Apia, Upolu, i.1925, and ix.1924; Malololelei, Upolu,

1v.1924 ; “Samoa,” 10.vi.1917 (Swale).

Cosmotropical.

Hyslop * has shown that the Adelocera of authors should be Lacon, and

vice versa.

HEMIRRHIPINAE.

2. Alaus samoensis, sp. n. (Text-fig. 1).

19-5 mm. long; 6 mm. wide across elytra; elytra less than twice as long

as head and thorax. Light castaneous, with darker indefinite longitudinal

suffusion on the prothorax. Uniformly covered with

brown-cinereous squamules. Head deeply, triangularly

impressed with the frontal margin recurved. Antennae

reddish-brown. Prothorax longer than wide, not

medianly carinate ; sides slightly and evenly arcuate ;

gently convex with vague impression on either side

just within the subtruncate anterior angles; declivous

at base. Posterior angles divergent, strongly carinate.

Scutellum declivous, elongate pentagonal. Llytra

widened to about their middle, thence narrowed to the

apex, which is emarginate, the angles being even and

obtuse. Third interval with a longitudinal carina

extending anteriorly to about the middle of the

scutellum, slightly divergent anteriorly. Striae finely

but plainly punctate, the intervals flat. Body beneath,

concolorous with upper surface. Sides of mesosternal

cavity not raised. Holotype, foul (2), Apia, Upolu, 23.vi1.1924. Described

from a single specimen.

Text-FIG. 1.—Alaus

samoensis, SP. D.

. J. A. recon: ““ Genotypes of the Hlaterid Beetles of the World: ”’ Proc. U.S. Nat. Mus.,

vol. 58, pp. 621-680, 1921.

ELATERIDAE, 113

The specimen before me is somewhat rubbed, presenting an irregular

asymmetrical maculation where denuded. The basal joint of the antenna may

be darker brown than the rest of that organ, but is covered with balsam.

This species approaches A. infwmatus Cand. and A. angularis Cand. in

Candéze’s key, but is without a longitudinal prothoracic carina, and the apical

emargination of the elytra is not spiniform at the angles.

DICREPIDIINAE.

3. Propsephus upoluensis, sp. n. (Text-fig. 2).

Male: 14-0 mm. long; 44 mm. wide. Moderately shiny. Dark castaneous,

with elytra slightly more reddish. Lateral margins of prothorax, lateral and

sutural margins of elytra, rufous; antennae

heght brown, basal joint darker. Pubescence

creamy, moderately coarse, semi-erect. Head

coarsely punctate, shallowly concave ; short,

feeble, median carina on occiput. Antennae

strongly compressed, long, exceeding half the

length of the body, strongly serrate from

third joint onwards. Third joint as long as

fourth and similar in shape; joints three to

five broad, their width greater than half

their length. Prothorax coarsely and closely

punctate, especially on the sides; distinctly

wider than long, depressed; sides gently

arcuate ; posterior angles not divergent, ar-

cuate, with tips recurved outward; strongly T8XT#1G. 2.—Propsephus upoluensis,

ei aace F sp. n.; A, dorsal aspect of male ;

unicarinate. Sulci well-marked but short. Bi cmtenmaot wale

Scutellum coarsely punctate, flat, broadly

rounded posteriorly. Hlytra as wide as prothorax, parallel to about middle,

thence conjointly narrowed to apex. Striae feebly impressed, intervals flat,

with relatively coarse punctuation.. Body beneath slightly darker than above,

with tarsi rufous. Mucro strongly curved behind coxae. Propleurae strongly

concave beneath lateral margins of prothorax. Second and third tarsal joints

114 INSECTS OF SAMOA.

strongly lamellate. Coxal lamina rounded at its widest point. Holotype male,

Malololelei, Upolu, 2000 ft., 21.1v.1925. Described from a single specimen.

This species is readily distinguishable from its congeners by its long,

flattened antennae (Text-fig. 2, A), with very broad segments along their mid-

length. This character may be subgeneric.

4, Propsephus tongaénsis (Candéze).

Elatérides nouv., ii, p. 25, 1878 (Anchastus).

a », ii, p. 42, 1881 (Lschiodontus hawaiiensis).

Thirty specimens as follows :

Twenty-four males: “ Pacific, Sandwich Is.,” Fry Collection (three speci-

mens); ‘‘ Pacific, Sandwich Is.,” Fry Collection ; Samoa, Janson Coll. (two speci-

mens) ; Tuasivi, Savaii, x1.1925 ; Tuaefu, Upolu, ix.1923 (Swezey and Wilder) ;

Mulifanua, Upolu, 16.vi.1923 (Wilder); Falelatai, Upolu, 11.vi.1924; Apia,

Upolu, 11.1924; Lalomanu, Aleipata, Upolu, x1.1924; Tafua Volcano, Upolu,

1917 (Swale, three specimens). Pago Pago, Tutuila, 0-300 ft., iv.1918 (Kellers,

ex coll. W. M. Giffard, two specimens) ; Tutuila, 1200 ft., xi1.1918 (Kellers,

ex coll. W. M. Giffard) ; Leone Road, Tutuila, 19.11.1924 (Bryan); Leone Road,

Tutuila, 24.11.1926 (Judd); Pago Pago, Tutuila, 9.1x.1923 (Swezey and Wilder) ;

Pago Pago, Tutuila, 2.x11.1924.

Seven females: Apia, Upolu, 1.1925; Malololelei, Upolu, iv.1924;

Mulifanua, Upolu, 9.xi1.1925; Tafua Volcano, Upolu, 1917 (Swale); Samoa,

15.1.1917 (Swale). Amauli, Tutuila, 9.v.1923 (Swezey and Wilder). Hull Is.,

Phoenix Is., 24.11.1924 (Bryan).

The four specimens from the Fry Collection are of particular interest.

Concerning them Mr. K. G. Blair writes: “.. . I[schiodontus hawaiensis

Cand. This species was described from specimens sent to Candéze by Fry,

and the specimens with Fry’s labels evidently formed a part of Fry’s series that

was not sent to Candéze. They are thus practically equivalent to co-types.

On the latter’s labels, as you will see, the locality appears as ‘Sandw. Islands,’

which I believe to be a misreading of ‘Samoa Islands.’ This same mistake

applies also to other beetles belonging to groups with which I am more familiar,

and which I am sure never came from the Sandwich Islands... .”’ Further,

Dr. David Sharp (Fauna Hawariensis, Vol. in, p. 369) remarks concerning

Ischiodontus: “‘ So far as we know, there is no [schiodontus in the Sandwich

Islands. From information received from Mr. Gahan, of the British Museum

ELATERIDAE. 115

(Natural History), it appears certain that the insects in the Fry Collection,

which Candéze described as I. hawatiensis, were wrongly labelled as coming

from the Sandwich Islands, the real locality being the Samoa Islands.”

These four specimens conform perfectly to Candéze’s description of P.

tongaénsis. Therefore, in view of the geographical error involved, and the

practically co-type value of the series, it seems safe to synonymize I. hawanensis

under the older name.

5. Propsephus rufipes (Schwarz).

Deutsche Ent. Zeitschr., p. 351, 1901 (Psephus).

Seven specimens, all males, as follows :

Pago Pago, Tutuila, 2.x11.1924. Nukualofa, Tonga, 16.11.1925; 14.11.1925 ;

22.11.1925, 23.11.1925 ; Neiafu, Vavau, Tonga, 5.i11.1925, 8.11.1925.

The type locality is Tongatabu.

6. Propsephus euaénsis (Schwarz).

Deutsche Ent. Zeitschr., p. 352, 1901 (Psephus).

Four specimens in the Bishop Museum collections :

Male, Tutuila, 1200 ft., 21.vii.1918 (Kellers, ex coll. Giffard).

Females, Pago Pago, Tutuila, 0-300 ft., iv.1918 (Kellers, ex coll. Giffard),

two specimens ; Pago Pago, Tutuila, 11.1924 (Bryan).

The type locality is Kua, Tonga Is.

The male genitalia of P. rufipes and of P. ewaénsis show no differences which

I can distinguish.

7. Propsephus major (Candéze).

Elatér. nouv., u, p. 25, 1878 (Anchastus).

Sixteen males and twenty-three females, as follows :

Males, all from Upolu: Malololelei, 2000 ft., ii., i1., 1v., Vi., Vil., X1.1924-25

(various collectors, thirteen specimens) ; Apia, xi1.1924; Mulifanua, 16.vi.1925

(Wilder) ; Samoa (Janson Coll.).

Females, from Upolu: Malololelei, ii., iii., iv., vi., vil., 1x., and xi. (various

collectors, seventeen specimens); Apia, 1.1925, 29.11.1924, 1x.1924; Tafua

Volcano, 1917 (Swale, 2 specimens); Aleipata, iv.—v.1924. Females, island

not specified: Samoa, 1917 (Swale); Samoa, ili.-vili., 1921 (F. W. O’Connor) ;

Iv. 2 4

116

INSECTS OF SAMOA.

Samoa, Janson Coll. (two specimens); “ Pacific, Sandwich Is., Fry Collection.”

(This last locality is doubtless an error and should refer to the Samoan Is.

See remarks above by Mr. K. G. Blair and the late Dr. David Sharp.)

The original description gives Fiji as the locality, not Togatabu (Tonga-

tabu) as stated in the Genera Insectorwm and in Schenkling’s Catalogue.

This is the species represented most numerously in the collections.

8. Propsephus gracilicornis, sp. n. (Text-fig. 3).

Female: 20-0 mm. long; 5-5 mm. wide.

Shiny, uniformly reddish-brown, with head and antennae darker brown.

Pubescence sparse, fine and moderately long.

Head convex; frontal margin broadly rounded; moderately punctate.

Text-Fic. 3.—Propsephus

gracilicornis, sp. n., female.

Antennae slender, elongate, over one-third the

length of the body, joints three to ten equal in

length ; feebly serrate. Prothorax moderately and

fairly closely punctate, wider than long. Sides

widely arcuate from posterior angles to anterior

margin. Posterior angles sinuate, narrower than

oreatest width of prothorax itself, not divergent,

strongly unicarinate, canaliculate on posterior

half; sulci divergent. Scutellum with sides nearly

straight ; broadly rounded posteriorly, medianly

carinate, coarsely punctate. LHlytra as wide as pro-

thorax ; with wide impression near base ; parallel

to beyond middle; apex rounded, briefly mucro-

nate at sutural angle ; striato-punctate ; intervals

nearly flat. Sternum darker brown than upper

body-surface. Mucro moderately curved behind

coxae. Lamina of posterior coxa (Text-fig. 4, A)

rounded at widest point, the outer projection not produced posteriorly as far as

the inner. Second and third tarsal joints strongly lamellate.

Holotype female ; Malololelei, Upolu, 2000 ft., 22.11.1925. Described from

a single specimen.

This species is readily separable from its Polynesian congeners by its very

KLATERIDAE. 117

elongate, feebly serrate antennae (Text-fig. 4, B). The individual antennal joints

are relatively long, their width being plainly less than half their length in even

ee

Text-ric. 4.—Propsephus gracilicornis, sp. n.; A, ventral view of hind coxal plate; B, antenna

of female.

the most robust (joints three to five). The antennae suggest an Adiaphorus,

but the suddenly widened coxal lamina, and the curved mucro distinguish the

species from that genus.

Kry To Samoan SPECIES OF PROPSEPHUS.

1. Antennae conspicuously slender or elongate 2

1a. Antennae normal and of moderate length : ; : 5 io

2. Antennal joints very wide ; prothorax strongly transverse . . upoluensis, sp. n.

2a. Antennal joints very slender ; scutellum carinate . : : . gracilicornis, sp. 0.

3. Prothorax broadly arcuate on sides : : F 5 : . euaensis Schw.

3A. Prothorax not broadly arcuate on sides . ‘ , : 3 and

4. Large insects, at least 15 mm.; colour blackish p é é . major Cand.

4a. Smaller insects; brown to rufous . : : : : 3 AO

5. Small insects, 9-11 mm. : A : : : : : . tongaensis Cand.

5a. Larger insects, not less than 11 or over 13 mm. ‘ S 4 . rufipes Schw.

The separation of P. tongaénsis and P. rufipes upon size alone is admittedly

unsatisfactory, since long series tend to intergrade in this respect. However,

what I consider to be P. rufipes are all males, and are larger than even

the females of P. tongaénsis. The possible identity of P. rufipes Schw. with

P. tongaensis Cand. can only be decided by reference to the types, which I

have been unable to examine.

118 INSECTS OF SAMOA.

Lamononia, genus novum.

Front with transverse carina; mouth parts directed forward and down-

ward. Antennae slender, serrate from third jomt onwards; second jomt

small; third and fourth joints equal. Prothorax narrowed anteriorly ; sterno-

pleural sutures double, excavate in front. Mucro bent sharply upwards between

the coxae. Mesosternal cavity perpendicular, strongly carinate medianly.

Lamina of hind coxa strongly narrowed outwardly ; a strong blunt tooth at

about the middle of its posterior margin. Tarsi with second and third joints

strongly lamellate. First joint of posterior tarsus only slightly longer than the

next three joints together. Claws simple.

Genotype : Lamononia monticola, sp. n.

The relation of this genus to Propsephus is the same as that of Spilus to

Ischiodontus. The strongly bent mucro distinguishes the new genus from

Spilus, Ischiodontus and Pantolamprus, while the per-

pendicular mesosternal cavity makes confusion with

Propsephus wmpossible (Text-fig. 6, A).

The genus is named in memory of Lamonon, the

French naturalist of the ill-fated La Perouse expedition,

who, with others from the Astrolabe, was murdered by

natives on Tutuila in December, 1788.

9. Lamononia monticola, sp. n. (Text-fig. 5).

Male: 13-5 mm. long; 4 mm. wide. Elongate,

shiny, dark brown, with the lateral margins of the

prothorax, the median part of the scutellum, the base,

lateral margins and sutural margins of the elytra, rufous.

Tpxr-ric. 5.Lamononia Antennae rufous. Pubescence luteous, moderately thick.

monticola, sp.n., male. Front flat; moderately punctate. Prothorax wider

than long, slightly convex ; sides evenly narrowed from

the base of the posterior angles to the anterior margin. Posterior angles

strongly unicarinate, sinuate but not divergent; tips acute. Punctuation

moderately fine, closer on the sides than on the disc, but not coarser. Scutellum

subpentagonal, arcuate in front, sinuate on sides, shiny, very finely punctate.

Klytra slightly narrower than prothorax, subparallel to about their middle,

ELATERIDAE. 119

thence narrowed to apex. Striae vague on disc; intervals flat, coarsely

punctate. Apex diverging from sutural line, finely mucronate. Ventral

surface of body dark brown, more shiny than above, with finer pubescence.

Legs, epipleurae, prosternal lobe and sterno-pleural sutures, rufous. Mucro

bent at right angles between coxae, with the intercoxal area concave. Meso-

sternal cavity perpendicular, with median longitudinal carina extending back to

the meso-metasternal suture. Coxal lamina strongly dilated inward, with the

bluntly rounded outer tooth prolonged to the line of the inner pair.

Female: 14 mm. long; 4:25 mm. wide. Similar to male in coloration,

pubescence and punctuation. More robust than male, with elytra relatively

much narrower than prothorax. Prothorax slightly more convex than in male,

Trext-Fic. 6.—Lamononia monticola, sp. n.; A, lateral view of mucro and mesosternal cavity ;

B, antenna of male.

with sides broadly and evenly arcuate. Elytra narrowed from base to middle,

thence more strongly to apex.

Two specimens: Holotype male, Malololelei, Upolu, 2000 ft., 23.x1.1924 ;

allotype female, Malololelei, Upolu, 2000 ft., 28.x1.1924.

In the male the pubescence of the antennae (Text-fig. 6, B) is longer and

thicker than in the female, but not definitely erect as in the males of some

species of Spilus.

PACHYDERINAE.

10. Simodactylus cinnamomeus (Boisduval).

Faun. Océanie, Col., p. 106, 1835 (Aeolus).

Four specimens :

Maie, Apia, Upolu, 13.1x.1923 (Swezey and Wilder).

Females, Apia, Upolu, iv.1924, 7.v.1924; Samoa, vi.1917 (Swale, two

specimens).

120 INSECTS OF SAMOA.

The pubescence is somewhat finer in these specimens than in those taken

in Hawaii, but this character is of trifling importance in view of the extreme

variability of the species as regards the outline of the prothorax and of the

coxal lamina, not to mention coloration and punctuation.

Generally distributed in Oceania as far north as the Hawauan Is.

10A. Simodactylus tasmani Candéze.

Elatérides nouveaux, fasc. v, p. 24, 1893.

Two specimens: Nui, Ellice Is., 21.1x.1924, male (?); Nukufetau, Ellice

Is., 20.ix.1924, male. No examples of this species were collected in Samoa.

The Nukufetau specimen is lighter brown than usual, but it is distorted

and appears to be immature.

The type of the species was obtained in Fij1.

Roggeveenia, gen. nov.

Front convex; anterior margin carinate. Antennae of moderate length,

feebly serrate. Prothorax narrowed anteriorly, longer than wide, subdepressed,

narrower than elytra. Sterno-pleural sutures fine, nearly straight, not excavate.

Mucro nearly horizontal. Elytra sharply acuminate at apex. Mesosternal

cavity sloping, sides flat. Metathorax not carinate. Metasternal coxal lamina

only moderately widened inward. Second tarsal joint simple; dilation of

third much reduced, that of the fourth definite but not pronounced.

Genotype: Roggeveema buxtoni, sp. n. (Text-figs. 7, 8, 9).

A Pachyderine with the dilation of the tarsal lobes reduced (Text-fig. 8),

and the antennae without a carina on their face; readily distinguishable from

the other genera by its sharply acuminate elytra. The male genitalia (Text-

fig. 9) are similar to those of Semodactylus cinnamomeus Boisd., but are not

acutely barbed on the lateral lobes. The last abdominal sternite is emarginate

at the apex in the female, entire in the male.

This genus is named in memory of Jacob Roggeveen, the Dutch navigator,

who discovered the Samoan islands in 1721, and was thus the first European

to sight the group.

ELATERIDAE. 121

11. Roggeveenia buxtoni, sp. n. (Text-figs. 7, 8, 9.)

Male: 10:5 mm. long; 3 mm. wide.

Elongate, castaneous, with the vertex and an indefinite median area of

the pronotum darker ;

TEXT-FIG. 7.—Roggeveenia

buxtont, sp. n.; A, dor-

sal aspect of male; B,

antenna of male.

verging from sutural

acuminate. Striato-punctate; intervals flat and finely

punctate. Ventral surface of body finely punctate,

dark castaneous, with prosternum and legs, except

femora, rufous. Sterno-pleural sutures nearly straight,

gently curved anteriorly, not excavate. Mucro nearly

horizontal, slightly convex between coxae. Mesosternal

cavity declivous, sides flat. Posterior coxal lamina

moderately widened inward. First joint of posterior

pees [be

the base of the elytra flavous, with the basal margin

and the circumference of the scutellum nearly black.

Antennae dark castaneous. Pubescence moderately fine,

short, ashen white. Front feebly convex, closely and

coarsely punctate. Antennae with third and fourth

joints similar and of about equal length, feebly serrate.

Prothorax depressed on disc, longer than wide. Sides

nearly straight and subparallel from posterior angles

to anterior third, thence gently narrowed to anterior

margin. Punctuation fine and close. Posterior angles

strong, divergent, feebly bicarinate, the inner carina

the stronger. Base of prothorax not canaliculate. Sulci

obsolete. Scutellum declivous, subogival, convex, very

finely punctate. Elytra shghtly wider than prothorax

(except posterior angles), parallel to about middle,

thence narrowed to apex, di-

line toward tip; apex long-

TExt-Fic. 8.—Roggeveenra buxtont, sp. n., ventral Text-FIc. 9.—Roggeveenia

aspect of hind tarsus. buaxtoni, sp. n., aedeagus.

tarsi subequal to the three following joints; third tarsal jot faintly, fourth

joint moderately dilated.

122 INSECTS OF SAMOA.

Female: 11 mm. long; 3-2 wide. Similar to male, with prothorax

relatively more robust and more closely and finely punctate. Disc of prothorax

depressed. Hlytra narrowed behind the middle. Legs flavous. Apical margin

of last abdominal sternite deeply notched.

Five specimens: Type male, Malololelei, Upolu, 2000 ft., vii.1924. (Geni-

talia dissected and mounted on same pin.) Paratype males, Malololelei, Upolu,

7.111924 (J. 8. Armstrong) ; Malololelei, Upolu, 2000 ft., vi.1924, and another,

same locality, vil.1924. Allotype female, in Bishop Museum collection,

Tutuila, 760-900 ft., iv.1918 (H. C. Kellers, ex coll. W. M. Giffard).

This species is named in honour of Mr. P. A. Buxton, to whose energy

the present volumes on the insect fauna of Samoa are due.

In the series before me, the coloration, especially of the elytra, varies

from flavous to reddish-brown ; the prothorax of the single female is uniformly

plumbeous. The antennae do not attain the tips of the posterior angles of the

prothorax, even in the male. The five specimens are nearly uniform in size.

MONOCREPIDIINAE.

12. Monocrepidius pallipes Eschscholtz.

In Thon, £nt. Arch., ii, 1, p. 32, 1829.

Seventeen specimens: Salailua, Savaii, 20.v.1924 (Bryan); Savaii,

vill.1924 (two specimens); Fagamalo, Savaii, xi1.1925. Malololelei, Upolu,

9.vi.1924. Leone Road, Tutuila, 24.11.1926 (Judd); ‘‘Samoa” (Swale) ;

“Samoa Is.” (Rev. 8. J. Whitmee); “ Ins. Samoa,” Janson (five specimens) ;

“ Samoa,”’ ii.—vii.1921 (O’Connor). Nukualofa, Tonga, 22.11.1925 ; Nukualofa,

Tonga, 24.11.1925. In addition, the Bishop Museum has a series of six speci-

mens: Hull Is., Phoenix Group, 24.11.1924 (Bryan, four specimens); Manua,

Hervey Is., v.1925 (Wilder) ; Papeete, Tahiti, 17.viii.1926 (Wilder).

Candéze gives the distribution as Polynesia. The species is said to be

common throughout the year in Tahiti, Society Is., on Hibiscus tiliacea, and to

be attracted to lights at night.

ELATERIDAE. 123

ELATERINAE.

13. Melanoxanthus melanocephalus (Fabricius).

Spec. Ins., i, p. 272, pl. 7, figs. 12, 12a, 1781 (Elater).

Six specimens from Apia, Upolu, as follows: iv.1924, vili.1924, 11.1925,

iv.1925, vi.1925, x.1925. Five from Baker Is., north of the Phoenix Group,

23.1x.1924 (H. L. Caum).

This species occurs throughout Southern Asia from Arabia to China, and in

the adjoining islands, as well as in Oahu of the Hawaiian Group, Mauritius and

Bourbon.

14. Melanoxanthus comptus, sp. n. (Text-fig. 10).

5 mm. lone; slender. Head and prothorax piceous (frons castaneous,

except medianly). Posterior angles, frontal margin of prothorax castaneous ;

scutellum and elytra castaneous. Legs castaneous ;

first four antennal joints castaneous, the remainder

piceous. Pubescence sparse, short, semi-erect, fine

and white. Evenly and thickly umbilicate-punctate.

Head gently convex; frontal margin rounded.

Prothorax, including posterior angles, slightly longer

than wide, nearly straight on each side, evenly

narrowed from about the middle to the anterior

margin; from about middle backward to tips of

posterior angles sides straight and parallel. Pos-

terior angles wide, strongly unicarinate. Prothorax

very convex; faintly canaliculate on basal declivity.

Scutellum declivous, triangular. Elytra subequal to

prothorax in width ; sides parallel to about middle,

thence narrowed to apex. Striae strongly punctate ;

their intervals flat and granulate. Apex subtrun-

cate, with sutural angles finely mucronate.

Two specimens: Holotype, Apia, Upolu, 1.1924. The paratype in the

Bishop Museum collection was taken by Swezey and Wilder, Amauli, Tutuila,

6.1x.1923.

The paratype differs in coloration from the holotype, having the prothorax

TEext-Fic. 10.—Melanoxanthus

comptus, Sp. 0.

124 INSECTS OF SAMOA.

dark castaneous rather than piceous. Although, according to Candéze’s key,

this species would appear to be M. semitinctus Boh.—the variety with flavo-

testaceous elytra, it differs in not having the prothorax canaliculate, and in

having the sides of the prothorax nearly straight instead of arcuate.

LIST OF TEXT-FIGURES.

Text-fig. 1. Alaus samoensis, sp. n.

2. Propsephus upoluensis, sp. n.; A, dorsal aspect of male; B, antenna of male.

33 3. Propsephus gracilicornis, sp. n., female.

4. Propsephus gracilicornis, sp. n.; A, ventral view of hind coxal plate; B, antenna of

female.

5. Lamononia monticola, sp. n., male.

39 6. Lamonoma monticola, sp. n.; A, lateral view of mucro and mesosternal cavity ;

B, antenna of male.

7. Roggeveenia buxtoni, sp.n.; A, dorsal aspect of male; B, antenna of male.

8. Roggeveenia buxtont, sp. n., ventral aspect of hind tarsus.

= 9. Roggeveenia buxtoni, sp. n., aedeagus.

0. Melanoxanthus convptus, sp. n.

MELASIDAE (KUCNEMIDAE)

Par EK. Fieutiaux

Les iles du Pacifique n’ont pas toutes été visitées spécialement au point de vue

entomologique. Certaines cependant ont donné lieu a des études assez com-

plétes, pour quill soit possible de se rendre compte que chaque faune de groupe

Wiles présente un caractére particulier et des formes qui lui sont propres.

A wenvisager que la seule famille en cause ici, je citeral pour la Malaisie

et la Mélanésie, les travaux de Bonvouloir,! qui a eu a sa disposition les chasses

de Wallace; et de moi-méme,? d’aprés les matériaux rapportés par Beccari,

d’Albertis, Doria, Modigliani, et Loria.

Ceux de Blackburn 3 et de Lea 4 pour |’ Australie.

Ceux de Sharp ® et de Broun ® pour la Nouvelle-Zélande.

De Fauvel? pour la Nouvelle-Calédonie.

De moi-méme ® pour les iles Viti et Samoa.

De Sharp ® pour les iles Hawaii.

J’ai en outre eu l’occasion d’étudier les Melasidae du Japon !° des récoltes

de Harmand et de Gallois; ceux des Philippines ! recueillés par le Professeur

Baker ; et ceux de I’ Indochine frangaise.!2

Les Melasidae sont parents trés proches des Elateridae. Ils s’en dis-

1 Monographie des Eucnémides (Ann. Soc. Ent. France, (4), Vol. x, Suppl., 1870-1875).

2 Ann. Mus. Civ. Genova, Vol. xxxvi, p. 555, 1896.

3 Proc. Roy. Soc. Victoria, Vol. xii, p. 215, 1900.

4 Trans. Roy. Soc. South Australia, Vol. xl, p. 301, 1916; Proc. Linn. Soc. New South Wales,

xliii, p. 725, 1919.

> Ann. Mag. Nat. Hist. (4), Vol. xix, p. 486, 1877.

6 Man. New Zealand Col., 1880-1893.

7 Rev. d Ent., Vol. xxiii, p. 119, 1904.

8 Bull. Mus. Nat. Paris, p. 248, 1925.

® Scient. Trans. Roy. Dublin Soc. (2), Vol. ii, p. 151, 1885; Fauna Hawaiiensis, Col.,

. 1, pt. 5, p. 385, 1908.

10 Ann. Soc. Ent. France, Vol. xci, p. 291, 1923.

11 Ann. Soc. Ent. France, Vol. xev, p. 29, 1926.

12 Bull. Soc. Zool. France, Vol. xlviii, p. 320, 1923.

125

Vol.

—

Vo

~~

126 INSECTS OF SAMOA.

tinguent surtout par I’épistome continuant la courbure du front; par le pro-

thorax moins librement articulé; et souvent par des sillons antennaires plus

ou moins profonds sur les propleures.

Leurs larves vivent dans les troncs d’arbre.

GENRES.

1. Bord antérieur du pronotum non caréné . : : ; : : ogee

Bord antérieur du pronotum caréné. Sillons antennaires des propleures

suturaux . a ; ; : : : - ; . Dirhagus.

2. Sillons antennaires des propleures marginaux. : ; : : Eas)

Sillons antennaires des propleures submarginaux : ; . : . Porraulacus.

3. Sillons antennaires limités en dedans par un rebord : : : . 4

Sillons antennaires non nettement limités en dedans_ . : : ae)

4. Elytres déclives a la base. ; , . : : : : : . Fornax.

Hlytres déprimés a la base : , . : : . Dromaeolus.

5. Troisiéme article des antennes plus long que le deuxidme. Sillons antennaires

peu profonds . : : 5 : . Maelodrus.

Deuxiéme et troisiéme articles des antennes. courts, égaux. Sillons antennaires

profonds . 3 : : : : A é : : ‘ . TLacerus.

Maelodrus, nov. gen.

Corps allongé. Antennes filiformes, faiblement épaissies vers le sommet ;

troisiéme article sensiblement plus long que le deuxiéme. Pronotum plus long

que large, arrondi en avant. Elytres graduellement atténués, non striés.

Sillons antennaires marginaux, peu profonds, non nettement limités en dedans.

Hanches postérieures trés élargies en dedans, anguleuses. Dernier arceau

ventral brusquement terminé en pointe (g), ou échancré en cercle (Q). Tarses

a quatriéme article évidé en dessus pour recevoir le cinquiéme.

A tout & fait ’apparence d’un Dromaeolus de forme allongée, mais les sillons

antennaires non hmités le rapproche de Profornaz.

1. Maelodrus aberrans, nov. sp.

6; 4mm.; 9,5 mm. Etroit, allongé, atténué en arriére; noir a peine

brillant ; pubescence jaune pale, plus apparente sur la base du pronotum et

la suture des élytres, et plus obscure sur les cétés. Téte convexe, densément

ponctuce ; épistome plus étroit & la base que la créte surantennaire. Antennes

noiratres ; troisiéme article beaucoup plus long que le deuxiéme et que le

quatriéme, les autres sensiblement égaux. Pronotum plus long que large, sub-

paralléle, sinué latéralement, arrondi en avant, convexe ; ponctuation nette et

MELASIDAE (EUCNEMIDAE). 127

peu serrée. Elytres atténués en arriére, non striés, légérement ponctués.

Dessous également noir, finement ponctué; pubescence réguliére. Sillons

antennaires peu profonds, mats, non nettement limités en dedans. Saillie

prosternale largement arrondie au sommet. LHpisternes métathoraciques trés

étroits et paralléles. Hanches postérieures trés élargies en dedans et anguleuses,

plus larges en dehors que les épisternes. Pattes ferrugineuses.

Upolu: Malololelei, 2000 pieds, mars, juin, novembre 1924. Trois exem-

plaires. Vailima, 600 pieds, octobre 1924. Un exemplaire.

Présente Vaspect de Fornax nitidus Fleutiaux, de Viti; mais chez celui-ci

les sillons antennaires sont lisses et brillants, et nettement limités par un rebord

intérieur.

Dromaeolus Kiesenwetter.

Naturgesch. Ins. Deutschl., Vol. iv, p. 197, 1858; Bonvouloir, Mon. Eucn., pp. 68 et 193, 1871 ;

Fleutiaux, Ann. Soc. Ent. France, Vol. lxx, p. 655, 1901 ; Idem, Ann. Soc. Ent. Belg., Vol. 1xi,

pp. 38 et 98, 1921.

2. Dromaeolus giffardi, nov. sp.

44 45mm. Allongé, noir peu brillant; pubescence jaunatre sur la base

et les cotés du pronotum, et sur la base et la suture des élytres, obscure sur le

reste du dessus du corps. Téte convexe, légérement carénée au milieu, ponctuée ;

épistome rugueux, trés étroit a la base; caréne interoculaire entiére ; palpes

ferrugineux, le dernier article des maxillaires épais. Antennes noires, filiformes,

dépassant la base du prothorax ; troisiéme article plus long que les deux sui-

vants. Pronotum plus long que large, faiblement rétréci en avant, ponctué

comme la téte. Hlytres légérement arrondis sur les cotés, subgraduellement

rétrécis en arriére, non striés, sauf tout a fait a l’extremité, finement ponctués.

Dessous également noir; pubescence jaune légere. Hanches postérieures

trés élargies en dedans, plus larges en dehors que les épisternes métathoraciques.

Pattes noirs ; tarses brundatres.

Samoa: Tutuila, 900-1200 pieds, juin 1918 (H. C. Kellers), Collection W.

M. Giffard, Musée de Honolulu. Trois exemplaires.

Chez les exemplaires les plus grands, que je pense devoir étre des 9, les

antennes sont moins longues.

Différe de D. fairmairer Fleutiaux, de Viti, par sa forme plus allongée

et plus convexe, par sa couleur entiérement noire et son aspect légérement

128 INSECTS OF SAMOA.

brillant ; ses yeux moins saillants, ne faisant pas saillie sur le prolongement

des bords latéraux du pronotum.

Fornax Castelnau.

Silbermann, Rev. Hnt., Vol. iii, p. 172, 1835 ; Bonvouloir, Ann. Soc. Ent. France, 4°, Vol. x, Part

Suppl., p. 69, 1871, et abid., p. 295, 1872 ; Fleutiaux, Ann. Soc. Ent. France, Vol. lxx, p. 655,

1901 ; Idem, Ann. Soc. Ent. Belg., Vol. lxi, pp. 38 et 124, 1921.

EsPrCES DU GENRE FornNax.

1. Pronotum convexe et rugueux, 12-13 mm. : : : : . . samoensis.

Pronotum peu convexe, ponctué mais non rugueux. ‘Taille moindre . oe

2. Caréne interoculaire entiére —. ; : : : 3 P : . uniformis.

Caréne interoculaire interrompue au milieu sur la base de lepistome . » oceanicus.

3. Fornax samoensis, nov. sp.

12-13 mm. Allongé, convexe; brun; pubescence jaune. Téte densé-

ment et rugueusement ponctuée, légérement sillonnée au milieu; épistome

aussi large a la base que la créte surantennaire. Antennes ferrugineuses, fili-

formes; troisiéme et quatriéme articles égaux, de la méme longueur que les

suivants. Pronotum a peu prés aussi long que large, arrondi sur les cétés et

rétréci en avant, convexe, sinué et deprimé a la base, densément et rugueuse-

ment ponctué. lytres arrondis et rétrécis dans la seconde moitié, striés ;

interstries légérement rugueux en avant, beaucoup moins en arriére. Dessous

brun rougeatre. Suillons antennaires profonds, lisses et bien limités en dedans

par un rebord. Hanches postérieures trés élargies intérieurement, anguleuses,

a peu pres de méme largeur en dehors que les épisternes. Dernier arceau ventral

en pointe obtuse. Pattes ferrugineuses ; griffes dentées.

Upolu: Apia, mars, décembre 1924, et octobre 1925. Trois exemplaires.

Voisin de F. tumadicollis Redtenbacher; de forme plus étroite, plus

paralléle, plus convexe ; ponctuation de la téte et du pronotum serrée et rugueuse ;

antennes plus courtes et tout & fait filiformes; élytres plus rugueux a la base.

4. Fornax uniformis Fleutiaux.

Bull. Mus. Nat. Paris, année 1925, p. 249, 1925.

Upolu: Apia, mars 1924, et avril 1925. Trois exemplaires. Malololelei,

2000 pieds, juin 1924. Un exemplaire.

Exemplaire typique de Viti Lévu.

MELASIDAE (EUCNEMIDAE). 129

5. Fornax oceanicus Fleutiaux.

Bull. Mus. Nat. Paris, année 1925, p. 249, 1925.

Upolu: Tafua Volcano, 1917 (Swale). Deux exemplaires. Malololelei,

2000 pieds, juin et novembre 1924. Cinq exemplaires. Tutuila: Pago Pago,

décembre 1924. Deux exemplaires. Pago Pago, septembre 1923 (Swezey et

Wilder), Musée de Honolulu. Un exemplaire. Tutuila, 2141 pieds (H. C.

Kellers). Un exemplaire.

Les plus petits individus de 4 & 5 mm. sont les §; le dernier arceau ventral

est entier. Chez les grands, 7 & 8 mm., Q, le dernier arceau est tronqué ou

échancré.

Exemplaires typiques de Viti et de Samoa.

Tacerus, nov. gen.

Corps allongé, fusiforme. Deuxiéme et troisiéme articles des antennes

courts, égaux, plus minces que les autres, aussi longs ensemble que le quatriéme.

Pronotum trapézoidal. Sillons antennaires marginaux, profonds, lisses et

brillants, non limités en dedans. Premier article des tarses postérieurs aussi

longs que les autres réunis.

Ressemble a certains Ceratus Bonvouloir,! comme C. nitidus et C. luzonicus

Fleutiaux, des Philippmes; mais les sillons antennaires non limités en dedans

le rapproche de Acedax Bonvouloir ; il en différe toutefois par sa forme allongée

moins convexe, par les sillons antennaires profonds, et par les épipleures des

élytres plus rétrécis en arriére.

6. Tacerus upoluensis, nov. sp.

7mm. Allongé, filiforme; brun noiratre, un peu rougeatre sur les bords

de la suture et les cotés des élytres; pubescence jaune roux. Téte convexe,

légérement et densément ponctuée; caréne interoculaire interrompue au

milieu; épistome aussi large a la base que la créte surantennaire, plus forte-

ment ponctué, subrugueux. Antennes ferrugineuses, subfiliformes, atteignant

1 Jai précedemment: Ann. Soc. Ent. France, Vol. xev, p. 46, note, et p. 60, 1926, réuni les

Ceratus aux Fornax comme sous-genre. La seule différence qui les sépare est la longueur relative

des deuxiéme et troisiéme articles des antennes qui sont égaux chez Ceratus, tandis que le troisiéme

est toujours plus long chez Fornax. J’ai été amené a faire cette réunion par l’inconstance de ce

caracteére dans une méme espéce: Fornax collega Bonvouloir, de Sumatra, Bornéo, Philippines.

130 INSECTS OF SAMOA.

la moitié du corps. Pronotum trapéziforme, a peu prés aussi long que large &

la base, peu convexe, légérement, densément et uniformément ponctué. Elytres

oraduellement rétrécis en arriére, non striés, trés finement et éparsement

pointillés. Dessous de méme couleur, pubescence semblable. Sillons anten-

naires profonds, lisses, non limités en dedans. Epipleures des élytres graduelle-

ment rétrécis en arriére. Episternes métathoraciques paralléles, plus étroits

que les épipleures a la moitié de leur longueur. Hanches postérieures

triangulaires, trés larges en dedans. Dernier arceau ventral atténué en pointe

obtuse et arrondie. Pattes brun ferrugineux ; tarses cylindriques.

Upolu: Malololelei, avril 1925. Un exemplaire.

Porraulacus Fleutiaux.

Ann. Mus. Civ. Gen., Vol. xxxvi, p. 567, 1896; Idem, Ann. Soc. Ent. France, Vol. lxx, p. 650,

1901 ; Idem, Ann. Soc. Ent. Belg., Vol. lxi, pp. 41 et 144, 1921.

Genre fondé sur une petite espéce, P. submarginalis, dont le type unique de

Nouvelle-Guinée, Hatam, juillet 1875 (Beccari), est au Musée Civique de Génes.

Depuis, M. le Professeur Baker I’a reprise a Sandakan, Bornéo.

Plus récemment j’ai fait connaitre une deuxiéme espéce, P. basipennis,

qui fait partie de la collection Fairmaire au Muséum National d’ Histoire Naturelle

de Paris. Elle y est représentée par deux individus, dont l'un est indiqué

d’Ovalau, archipel des Viti, et autre de Samoa (Dr. Graff).

On trouvera plus loin les descriptions de deux nouvelles espéces récoltées

par MM. Buxton et Hopkins.

Etant donné Vhabitat restreint de ces insectes, je crois utile d’en donner

ici un tableau de détermination.

J’ai d’abord considéré Porraulacus comme un Eucneminae 3. sillons

antennaires submarginaux trés distincts. Maintenant que nous sommes en

face d’autres espéces dont les sillons ne sont pas toujours bien limités, j’ai

tendance a le rapprocher du vieux genre Hylis Gozis (Hypocoelus Guérin), jusque

la placé parmi les Melasinae; en faisant remarquer toutefois que ce dernier

ressemble un peu aux Hucneminae du groupe Macraulacus.}

Il faut signaler que Porraulacus présente les mémes variations dans

l’apparence des sillons antennaires que Proxylobius,? et quwil en est également

1 Fleutiaux, Ann. Soc. Ent. Belg., Vol. Ix, p. 93, note b, 1920.

2 Fleutiaux, Ann. Soc. Ent. France, Vol. xcv, p. 32, note 2, 1926; Idem, Encycl. Ent., Col.,

I, 2, p. 94, note 1, 1926.

MELASIDAE (EUCNEMIDAE). 131

trés voisin. Dans le génotype, Proxylobius hellerr, du Japon, les sillons sont

parfaitement limités, alors que chez ses congénéres: P. phalippinus,' des

Philippines; P. orientalis,! de Birmanie; et P. sicardi, de Madagascar par

exemple, ils sont nuls ou a peu prés, exactement comme chez Hylis procerulus

d’ Hurope.

Les genres a sillons antennaires marginaux sont beaucoup plus nombreux,

ils présentent les mémes différences dans la profondeur de ces sillons. C'est

ainsi que chez Scythan insulcatus Fleutiaux,? des Philippines, et Plesiofornax

perroti Fleutiaux,? de Madagascar, ils sont presque nuls.

Le caractére fourni par les sillons antennaires a jusqu’a présent été la base

de la classification en sous-famille. Quelle valeur a-t-il réellement ? Bien in-

constante, il faut Pavouer. Les Eucneminae (sillons antennaires marginaux

ou submarginaux) pourraient trés bien se subdiviser, en ce qui concerne les

genres a sillons submarginaux,+ dont le type serait Macraulacus, et ou

Porraulacus, Proxylobius, Pseudodiacretus viendraient se ranger.®

D’un autre coté Hylis, malgré ses propleures marqués d’une faible impres-

sion antennaire, est consideré comme un Melasinae (pas de sillons antennaires).

Cependant, nous Vavons vu, il n’est pas trés éloigné sous ce rapport des

Porraulacus.

Dans ces conditions on conviendra qu il n’est pas précisément aisé de con-

clure sur la séparation exacte des deux sous-familles.

ESPECES DU GENRE PORRAULACUS.

1. Corps entiérement noir. : : ; : : : 3 ace.

Corps noir, avec une tache rouge sur la partie antérieure des élytres . 3

2. Téte carénée au milieuen avant. émurs ferrugineux obscur ou noiratres submarginalis.®

Téte non carénée au milieu en avant. Pattes entiérement ferrugineuses buxtond.

3. Forme subparalléle. Partie antérieure des élytres rouge. : . basipennis.”

Forme plus élargie, subelliptique. Hlytres avec une assez grande tache

rouge humérale 4 ; : ; 4 : : ‘ . humeralis.

1 Décrit comme Xylobius.

2 Fleutiaux, Ann. Soc. Ent. France, Vol. xcv, pp. 35 et 70, 1926; Idem, Encycl. Ent., Col.,

I, 2, p. 94, note 1, 1926.

3 Fleutiaux, Ann. Soc. Ent. Belg., Vol. lx, p. 93, note a, 1920; Idem, Eneycl. Ent., Col.,

I, 2, p. 94, note 1, 1926.

4 Fleutiaux, Ann. Soc. Ent. Belg., Vol. 1xi, p. 40, tableau, No. 65, 1921.

5 Et peut-étre aussi le genre Talerax, de Nouvelle-Zélande, au moins partiellement ?

6 Fleutiaux, Ann. Mus. Civ. Gen., Vol. xxxvi, p. 568, 1896.

7 Fleutiaux, Bull. Mus. Nat. Paris, année 1925, p. 250, 1925.

IN 5

132 INSECTS OF SAMOA.

7. Porraulacus humeralis, nov. sp.

2°5-3°5 mm. Subelliptique; noir, avec une grande tache rouge aux

épaules ; pubescence jaune, courte et peu serrée. Téte convexe; ponctua-

tion peu dense; créte interoculaire anguleuse sur la base de lépistome ;

celui-ci trés étroit a la base. Antennes ferrugineuses, moniliformes; dernier

article beaucoup plus long que les précédents. Pronotum convexe, aussi long

que large, arrondi et rétréci sur les cétés en avant; ponctuation réguliére.

Elytres rétrécis en arriére, conjoitement arrondis au sommet, non striés ;

ponctuation peu serrée. Dessous noir. Sillons antennaires distincts. Hanches

postérieures transversales, subparalléles, insensiblement élargies en dedans, plus

larges en dehors que les épisternes métathoraciques. Pattes ferrugineux clair.

Upolu: Apia, avril et décembre 1924. Deux exemplaires. Malololelei,

2000 pieds, mars, avril, juin 1924. Nombreux exemplaires. Mont-Vaea,

1500 pieds, décembre 1924. Un exemplaire. Tutuila: “Center of island”

(Kellers). Sava: Safune, 2000-4000 pieds (Bryan).

Peut se comparer a P. basipennis, mais de forme moins paralléle ; la tache

rouge des élytres est humérale.

8. Porraulacus buxtoni, nov. sp.

2°5-3°35 mm. Oblong; noir peu brillant; pubescence jaunatre trés

légére. 'Téte convexe ; ponctuation peu serrée ; créte interoculaire anguleuse

sur la base de l’épistome ; celui-ci trés étroit a la base. Antennes ferrugineux

obscur, plus claires a la base, moniliformes; dernier article aussi long que

les deux précédents réunis. Pronotum convexe, aussi long dans son axe

que large a la base, graduellement arrondi et rétréci sur les cdtés, ponctué

comme la téte, mais moins densément et plus réguliérement. LHlytres rétrécis

en arriére, conjointement arrondis au sommet, non striés; ponctuation peu

serrée. Dessous de méme couleur. Sillons antennaires lisses, indistinctement

himités. Hanches postérieures transversales, subparalléles, insensiblement

élargies en dedans, un peu plus larges en dehors que les épisternes métathoraciques.

Pattes ferrugineuses.

Upolu: Apia, mars 1924. Un exemplaire. Mont-Vaea, 1500 pieds,

décembre 1924. Un exemplaire. Aleipata, avril 1924. Deux exemplaires.

Malololelei, 2000 pieds, avril, juin 1924. Trois exemplaires. Tutuila: Pago

MELASIDAE (EUCNEMIDAE). 133

Pago, décembre 1925. Un exemplaire. Pago Pago, septembre 1923 (Swezey

et Wilder). Deux exemplaires.

Savai: Safune, 2000-4000 pieds. Manua Is.: Tau (Judd).

Chez les petits individus, qui sans doute sont des J, les antennes sont plus

robustes et plus longues.

Proche de P. submarginalis Fleutiaux. ‘Taille plus grande; téte sans

caréne frontale au milieu en avant; sillons antennaires non distinctement

limités.

Dirhagus Latreille.

Ann. Soc. Ent. France, Vol. ii, p. 180, 1834 (posthume.). Microrhagus Boisduval et Lacordaire,

Faune Ent. Env. Paris, pp. 620 et 626, 1835.

Génotype: Elater pygmaeus Fabricius, 1792.

Le genre Rhacopus Hampe,! établi pour R. comnamomeus Hampe, 1855

=Eucnemis sahlbergi Mannerheim, 1823, est d’une forme plus allongée avec

laquelle Reitter a créé un sous-genre sous le nom de Hyporrhagus, 1921.2 Le

nom de Dichodirhagus, proposé par Méquignon, 1925, s’'applique a Microrhagus

pyrenaeus Bonvouloir, 1872.

9. Dirhagus hopkinsi, nov. sp.

4 mm. Allongé, atténué; noir terne sur la téte et le pronotum,

ferrugineux sur les élytres ; pubescence jaune clair, soyeuse. Téte irréguliére-

ment ponctuée, subrugueuse, légérement impressionnée en avant; épistome a

peu prés de la largeur de la créte surantennaire. Antennes longues, ferrugineuses,

légérement dentées. Pronotum aussi long que large, paralléle, arrondi aux

angles antérieurs, trés convexe, fortement déprimé aux angles postérieurs et a

la base; ponctuation peu serrée; caréne du bord antérieur briévement recourbée

en rond en arriére ; caréne latérale postérieure n’atteignant pas le bord antérieur ;

caréne des angles postérieurs atteignant la moitié. Elytres non striés, seulement

avec une strie suturale; ponctuation assez forte, peu serrée, subrugueuse.

Dessous noir; dépressions antennaires étroites, subparalléles, lisses, nettement

1 Verh. Zool. Bot. Wien, Vol. v, p. 256, 1855.

2 Best. Tab. eur. Col., Heft 90, p. 81, 1921.

3 Bull. Soc. Ent. France, année 1925, p. 240, 1925.

134 INSECTS OF SAMOA.

limitées. Hpisternes métathoraciques excessivement étroits en avant, élargis

en arriére, un peu moins larges postérieurement que le bord externe des

hanches postérieures. Celles-ci subparalléles, faiblement élargies en dedans.

Dernier arceau ventral en pointe obtuse. Pattes ferrugineux clair.

Upolu: Apia, avril 1925. Un exemplaire, type. Tutuila: Pago Pago

(Swezey and Wilder). Un exemplaire.

De taille plus petite que D. holosericatus Fleutiaux, de Viti; méme aspect

de forme et de couleur, mais caréne marginale du bord antérieur du pronotum

recourbée en rond, épisternes élargis en arriére.

Hspéces décrites dans le Bull. Mus. Nat. Paris, 1925 :

Dromaeolus faarmavret, p. 248. Viti, Ovalan.

Fornax nitidus, p. 248. Viti.

» uniforms, p. 249. Viti Levu.

5 oceanrcus, p. 249. Viti. Samoa.

» vrensis, p. 250. Viti Levu.

55 Serraticormis, p. 251. Viti.

Porraulacus basvpennis, p. 250. Viti, Ovalau. Samoa.

Durhaqus holosericatus, p. 251. Viti Levu.

CERAMBYCIDAE

By Cur. AURIVILLIUS

(With 1 Plate.)

I Ave to thank Mr. P. A. Buxton for the opportunity of working out the very

interesting collection of Cerambycids from the Samoan Is. brought together

during the last few years by himself, and Messrs. G. H. E. Hopkins, J. 8. Arm-

strong, H. C. Kellers, A. F. Judd and others.

Thirty-five species of CERAMBYCIDAE are now known to occur in Samoa :

their distribution in the Archipelago, and in other groups of islands, is shown in

the following table :—

SAMOA ISLANDS.

SA ee e 4 OTHER

elie 3 as i a 4 Locatiriss.

SW Seber lea) ele Wega da

1. Olethrius insularis Fairm. Salix Xx

2. a subnitidus Auriv. x

3. Ceresium maculaticolle Blanch. NOC x

4, >» uncolor F. << EX Oceanic Is.

Dy. » reticulatum Auriv. . <x

6. Obrium gynandropsidis Fairm. <li x

7. Glaucytes aureosignata Auriv. x

8. Dihammus acanthias Pasc. <x 2 x

we is holotephrus Boisd. Sih

10. 4! rusticator F. SSNS Malayan Region.

11. Pterolophia lateripicta Fairm. x x

lla. es » var. connexa Auriv. <

12. Ropica, sp. . : x

13. Ropica, sp. . ‘ : Xx

14. Prosoplus samoanus Auriv. x

15. se ventralis Auriv. x

16. 55 sp. : ‘ é x

17. Lamprosybra sulcata Auriv. . ESilNess

136 INSECTS OF SAMOA.

Samoa ISLANDS. a

5 eI | OTHER

Suleee lea <i 4 alm] Locatitizs.

SlE(EISIS/8l8/ al 8

a\/Pleal=sl/eal/el/alai|<

174. Lamprosybra sulcata var. fuscipen-

nis Auriv. . x

18. Oopsis senugranosa Fairm. Ix x | X

19. 5, nutator F. Salix <> <elle< Oceanic Is.

20: ,, albopicta Auriv. <a OX

21. ,, striatella Fairm. (?) x x

22. », oblongipennis Fairm. (?) XW OC IX ex x

23. y54, SPE 0 : : : x

24. obtusinennis Auriv. : x

25. Porerrate flavovittatus Auriv. . Xx

26. - savawensis Auriv. . x<

27. bipunctatus Auriv. . x

28. Sciadella albofasciata Auriv. . x

29. » variabilis Auriv. : x1 OX

29a. - », ab. bilineata Auriv. . Salle

29B. 5S », ab. trigonifera Auriv. x

30. » minuta Auriv. ‘ : x

31. Odontorhabdus dentipes Auriv. aes

32. - Rechingert Auriv. . |X| xX

33. 5 flavicornis Auriv. . x

34. sp teretuscapus Auriv. . x

35. Leptocyrtinus nitidus Auriv. . x

Totals A : : 7 | 31/20) 2

From this synopsis it is seen, that at present thirty-five species of

Cerambycids are known to occur on the Samoan Is., of which seven have been

found on Savaii, thirty-one on Upolu, twenty on Tutuila and only two on

Manua.

Four genera, Lamprosybra, Paratrypanius, Odontorhabdus, Leptocyrtinus

(with one species), and perhaps also Sciadella (three species) are known only

from Samoa. Moreover, twenty-three species are not met with in other countries.

Kach of the Samoan islands seems to possess endemic forms. Paratrypanius

savanensis is known only from Savaii; Glaucytes aureosignata, Prosoplus

samoanus, Paratrypanius flavovittatus and bipunctatus, Sciadella albofasciata,

Odontorhabdus flavicornis, O. teretiscapus and Leptocyrtinus nitidus only from

CERAMBYCIDAE. 137

Upolu ; peculiar to Tutuila are Olethrius subnitidus, Prosoplus ventralis, Oopsis

obtusipennis and Sciadella minuta.

It seems evident that Savaii, the largest island in the group, has been less

well explored than Upolu or Tutuila. [This is certainly the case—P. A.

Buxton. |

The species of CERAMBYCIDAE known from Samoa are as follows :—

PRIONINAE.

1. Olethrius insularis Fairm.

Mallodon insularis Fairmaire, Rev. Zool. (2), 2, p. 57, (2) 1, t. 11, £. 14, 1850 ; Olethrius insularis

Lameere, Ann. Soc. Ent. Belg., 47, p. 133, 1903; Révis. Prion., p. 175, 1903; Olethrius

insularis Auriv., Denkschr. K. Akad. Wiss. Wien, Math.-Naturw. Kl., 89, p. 691, 1913.

Upolu: two females, Apia, vil. and 21.x.1924; two other females,

Malololelei, 2000 ft., iv.1924, 17.1v.1925.

The third joint of the antennae is not or hardly twice as long as the second,

and has on the under side near the apex a distinct and well defined sensory

surface composed of two or three shallow, dull furrows; first jomt more or

less curved on the inner side. Elytra dull, not glossy, densely vermiculate and

rugulose, especially before the middle.

2. Olethrius subnitidus, sp. n.

3g, Nigro- vel castaneo-brunneus. Caput paulo latius quam longius,

supra fortiter rugulosum, grosse punctulatum, inter oculos depressum et

longitudinaliter sulcatum. Antennae ultra elytrorum medium attingentes,

articulo 1° recto, obconico, supra longitudinaliter sulcato, punctato, punctis

lateraliter confertioribus, articulo 3° nitido, parce punctato, secundo duplo

longiori, area sensili indistincta, articulis duobus ultimis per longitudinem

totam striatis. Prothorax transversus, basi elytrorum latitudinem aequans,

antrorsum angustatus, lateribus fere rectis, denticulatis, angulis posticis paulo

productis, disco ad latera fortiter ruguloso, medio nitido, punctato, tumoribus

duobus parce punctatis instructo. Scutellum magnum, late rotundatum,

pilis brevibus recumbentibus omnino vestitum. Elytra nuda, nitidiuscula,

coriacea, punctis nonnullis parvis, apicibus late rotundatis, angulo suturali

acuto, costis vix perspicuis. Pedum anticorum femora et tibiae scabra,

fortiter punctata et rugosa, nec denticulata nec spinosa. Metasterni latera et

138 INSECTS OF SAMOA.

episterna pilis flavidis vestita. Abdomen subtus nudum, nitidum, segmento

ventrali ultimo postice fulvo-villoso, medio leviter sinuato.

Long. corporis 58-66 mm. ; lat. 21-24 mm.

2 Antennae ultra elytrorum medium haud attingentes, articulis 6°-11°

striatis, articulo 11° paulo compresso. Pronotum minus punctatum, angulis

posticis magis productis. Pedes nitidi, parce punctati, antici haud scabri.

Long. 62 mm. ; lat. 20. mm.

Three males and one female, Tutuila (Kellers).

Nearly allied to the preceding species (O. imsularis Fairm.), but differing

in having coriaceous subnitid elytra, a longer, straight or nearly straight first

antennal joint, and a longer third joint, which is about twice as long as the

second joint and has its sensory surface obsolete. From O. tyrannus Thoms.,

the present species is easily distinguished by the shorter and stouter third joint

of the antennae. In O. tyrannus, the third joint is three times as long as the

second joint.

CERAMBYCINAE.

3. Ceresium maculaticolle Blanch.

Diatomocephalus maculaticollis Blanchard, Voy. Pole Sud, 4, p. 267, t. 16, fig. 9, 1853.

Ceresium maculaticolle Auriv., Denkschr. K. Akad. Wiss. Wien, Math.-Naturw. Klasse, 89, p. 691,

1913.

Two males and twenty-one females, Upolu: Apia, 23.1.1924, v.1924,

vii.1924 and 1.1925; Malololelei, 2000 ft., 24, 25.11.1924, 22.1v.1925; Apia,

20.vili.1922, 10.x.1922, 13.iv.1924 (Armstrong); same locality, 13.1x.1923

(Swezey and Wilder). Two females, Pago Pago, Tutuila (Kellers and Stefiany).

The species was also found in Tonga at Manau and Nukualafa, 11., 11.1925,

by G. H. E. Hopkins.

4. Ceresium unicolor F.

Saperda unicolor Fabricius, Mant. Ins., 1, p. 147, 1787; Saperda unicolor Oliv., Ent., iv, 68,

p. 38, t. 3, fig. 28, 1795; Saperda unicolor Boisd., Voy. Astrol. Ent., 2, p. 526, 1835;

iTesperophanes quitaticollis Fairm., Rev. Zool. (2), 2, p. 63, 1850; Ceresium unicolor Bates,

Ann. Mag. Nat. Hist. (4), 14, p. 131, 1874; Ceresium simplex var. Fairm., Ann. Soc. Ent.

Fr. (6), 1, p. 472, 1887 ; Ceresium unicolor Auriv., Denkschr. K. Akad. Wiss. Wien, Math.

Naturw. Klasse, 89, p. 691, 1913.

Upolu: ten specimens, Apia, ii., v., vi.1924 (Buxton and Hopkins),

10.1v.1923 (Armstrong), 13.1x.1923 (Swezey and Wilder); one specimen, Lalo-

manu, x1.1924; also one specimen, Tutuila, 9.1x.1923 (Swezey and Wilder).

CERAMBYCIDAKE. 139

The species is widely distributed over the islands of the Pacific Ocean, but

is replaced in New Guinea, the Philippine Is., the Malay Archipelago, Southern

Asia, Madagascar, Mauritius and Hast Africa by the nearly allied C. somplex ¥.

5. Ceresium reticulatum, sp. n. (Plate I, fig. 1).

Elongatum, subparallelum, parum convexum, rufobrunneum, clava

femorum, capite pronotoque interdum infuscatis, tenuiter griseo-pubescens

aut ex parte subnudum, tarsis supra densius griseis. Caput et pronotum

supra dense reticulato-punctata aut striolata. Caput cum oculis pronoto vix

angustius. Prothorax latitudine media haud vel parum longior, supra parum

convexus, in lateribus pone apicem et in medio plus minusve tumidus.

Scutellum rotundatum. Elytra subnitida, discrete punctata punctis apicem

versus multo minoribus, pilis adpressis, brevibus, griseis vestita, apice singu-

latim rotundata. Corpus infra punctulatum, ante coxas anticas reticulatum.

Femora modice clavata, postica apicem abdominis haud attingentia. Antennae

corpore parum longiores, apicem versus pallidiores, flavido-pubescentes.

Long. corporis 7-8 mm.

Two specimens, Upolu: Apia, 18.iv.1925 (Buxton and Hopkins) ;

Malololelei, 13.1x.1923 (Swezey and Wilder). Three specimens, Tutuila:

Pago Pago, 30.1x.1923 (Steffany) ; 1200 ft., 21.vi1.1918 (Kellers).

The specimens from Tutuila have a somewhat narrower and more finely

sculptured prothorax

Allied to C. olidum Fairm., but differing from that and other known species

in the sculpture of the prothorax.

6. Obrium gynandropsidis Fairm.

Obrium gynandropsidis Fairmaire, Rev. Zool. (2), 2, p. 59, 1850; Rev. Zool. (2), 1, tab. 11, fig. 4,

1849 ; Obrium gynandropsidis Auriv., Denkschr. K. Akad. Wiss. Wien, Math.-Naturw. Klasse,

89, p. 691, 1913.

Two males and two females, Upolu: Apia, 1.1925, Malololelei, 2000 {t.,

14-30.v1.1924. Two males, Tutuila: Pago Pago, 24.ix.1923 (Swezey and

Wilder).

Also one male, Tonga: Vavau, Neiafu, 5.viii.1925 (G. H. E. Hopkins).

The type of this species was obtained in Tahiti. Specimens from that

island are paler, with the sides of the pronotum only slightly darkened in the

140 INSECTS OF SAMOA.

middle, and the club of the femora light brownish. Specimens from the Samoan

Is. are darker, with the club of the posterior femora blackish, the antennae

distinctly ringed with brown, and the pronotum on each side with a broad

blackish stripe ; the stripes are usually united with each other at the base and

apex.

7. Glaucytes aureosignata, sp. n.

Nigra, haud vel vix aenescens, elytris ad basin plus minusve brunnescentibus ;

femoribus ad basin rufis. Corpus supra signaturis aureo-tomentosis ornatum,

infra dense griseo-pubescens medio metasterni abdominisque nudis. Caput

supra aureotomentosum, in vertice macula nuda nitida triangula ornatum,

genis temporibusque griseo-albidis, pilosulis. Pronotum aureo-quadrivittatum

vittisque tribus nitidis nudis nigris parce et remote punctulatis ornatum, leviter

conicum lateribus subrectis angulis posticis leviter incurvis. Scutellum nigrum

utrinque griseo-pubescens. Elytra subtrigona, apicem versus angustata, apice

oblique truncata angulis dentatis, suturalibus retrorsum magis_ productis,

subseriatim discrete punctata interstitiis laevibus, nitidis, ad basin et circa

scutellum flavescente tomentosa, deinde vitta lata impressa suturali maculisque

tribus magnis impressis seriatis aureo-tomentosis, insuper pone humerum

macula simili laterali haud impressa ornata. Episterna metathoracis omnino

pube densa aureo-mutante vestita.

Long. corporis 11-13 mm.

g, Antennae corpore multo longiores; articulus ultimus elongatus,

paenultimo longior, apice curvatus. Femora postica apicem elytrorum

superantia.

2, Antennae corpore vix longiores; articulus ultimus parum elongatus,

paenultimo haud longior, rectus. Femora postica apicem elytrorum haud

superantia.

Three males and five females, Malololelei, Upolu, 2000 ft., 5.1., 18.1v.1924 ;

one specimen, Apia, 1v.1924.

Nearly allied to Glaucytes graphica Boisd., and perhaps only a local race

of that species. Easily distinguished by the colour of the tomentum and

probably also by the sculpture.

No species of the Genus Glaucytes was hitherto known to occur in the

Samoan Is.

CERAMBYCIDAE. 141

LAMIINAE.

8. Dihammus acanthias Pasc.

Monochamus acanthias Pascoe, Ann. Nat. Hist. (4), 15, p. 65, 1875; Haplohammus acanthias

Auriv., Dexkschr. K. Akad. Wiss. Wien, Math.-Naturw. KI1., 89, p. 691, 1913.

Eleven males and five females from the coast-districts of Savaii and Upolu.

Savail: Fagamalo and Iuasivi, xi.1925 (Buxton and Hopkins); Salailua,

21.v.1924 (Bryan). Upolu Is.: Apia, 18.11.,° 30.vi.1922, 19.iv., 18.v.1924

(Armstrong) ; 13.ix.1923 (Swezey and Wilder); vi., vil., x1i.1924; Vailutai,

Lalomanu and Aleipata, 10.iv., 9.vi., x1.1924.

My surmise (J.c., 1913) that this species has been introduced into the

Samoan Is. in recent times is corroborated by the localities mentioned above.

9. Dihammus holotephrus Boisd. (?)

Lamia holotephra Boisduval, Voy. Astrol. Ins., 2, p. 498, t. 8, fig. 3, 1835 ; Haplohammus holotephrus

Auriv., Denkschr. K. Akad. Wiss. Wien, Math.-Naturw. K1., 89, p. 692, 1913.

Hight males and eighteen females, from Upolu and Tutuila. Upolu: Apia,

i.—vu.1924; Malololelei, 2000 ft., 14-30.vi., 28:xi.1924; Aleipata, xi.1924.

Tutuila: Pago Pago, 20.ix., 18.xi1.1923; Amauli, 5.1x.1923; Fagataga,

29.11.1926 (various collectors).

As to the interpretation of Boisduval’s species, see my paper quoted above.

10. Dihammus rusticator F.

Lamia rusticator Fabricius, Syst. Eleuth., 2, p. 294, 1801; Monohammus rusticator Blanch., Voy.

Pole Sud Zool., 4, p. 294, t. 17, fig. 5, 1853; Monochamus rusticator Aulm., Fauna deutsch.

Kolon., 5, 3, p. 19, fig. 14, 1912; 5, 5, p. 20, fig. 16, 1913; Lamia fistulator Germ., Ins.

Spec. Nov., p. 478, 1824; Monochamus fistulator Pasc., Trans. Ent. Soc. Lond. (3), 3, p. 293,

1866.

One male, one female from Upolu: Apia, xi.1925; Lalomanu, x1.1924.

One male from Tutuila: Pago Pago, 4.x1.1925, one .

This widely distributed species, not hitherto known from the Samoan Is.,

is probably a recent introduction.

142 INSECTS OF SAMOA.

11. Pterolophia lateripicta Fairm.

Oopsis lateripictus Fairmaire, Pet. Nouv. Ent., 2, p. 290, 1879; Ann. Soc. Ent. Fr., (6) 1, p. 479,

1881.

Three specimens from Upolu: Lalomanu, x1.1924. Two specimens from

Tonga: Neiafu, Vavau, 5, 7.11.1925.

Var. connexa, Var. Nn.

A forma typica differt plagis lateralibus fuscis elytrorum intus dilatatis

ad suturam connexis.

Long. corporis 7 mm.

One specimen from Tutuila: Leone, 24.11.1926 (Judd).

12. Ropica, sp.

A single specimen from Upolu: Malololelei, 2000 ft., 25.11.1924.

The incision on the outer side of the middle tibiae is hardly perceptible.

13. Ropica, sp.

One specimen, also from Upolu: Malololelei, 14—30.vi.1924.

Darker and differently coloured, if compared with No. 12, but perhaps the

same species. I have not thought it advisable to describe these unique

specimens.

14. Prosoplus samoanus Auriv.

Prosoplus samoanus Aurivillius, Denkschr. K. Akad. Wiss. Wien, Math.-Naturw. Kl., 89, p. 692,

1913.

Ten males and five females from Upolu: Apia, 16.11, 25.vi.1922 (Arm-

strong) ; 9.11., 3, 28.i11., vi., vil., x., x1.1924 (Buxton and Hopkins) ; Malololelei,

2000 ft., 22.vi.1924 (Armstrong), vii.1924; Aleipata, 10.vi.1924 (Buxton and

Hopkins) ; Leulumoega 14.1x.1923 (Swezey and Wilder) ; Lalomanu, xi.1924.

Only known from Upolu, where it is evidently common.

CERAMBYCIDAE. 143

15. Prosoplus ventralis, sp. n.

Subcylindricus (Q) aut postice angustior ($), piceus aut nigricans, pilositate

adpressa flavescente aut obsolete virescente plus minusve densa _ vestitus

maculisque perpaucis flavidis conspersus, sub vestimento nitidiusculus.

Antennae unicolores, nec punctatae nec annulatae, infra ciliatae, corpore

parum (3) vel vix (2) longiores. Palpi rufobrunnei. Labrum et clypeus apice

cilis flavis instructa. rons transversa, punctata, minus dense _ griseo-

pubescens. Genae lobis inferioribus oculorum subaequales. Caput supra

inter antennas latissime sulcatum sulco postice angustato, triangulo. Pro-

thorax transversus, utrinque prope apicem dente valido armatus, ante dentem

constrictus, unicolor, flavescens, remote punctatus, ad basin leviter bisulcatus,

in medio linea anegusta nitida, interdum obsoleta aut interrupta instructus.

Scutellum semicirculare, flavido-pilosum. Elytra ad basin pronoto latiora

humeris obtuse rotundatis, apice late et obtuse rotundata, ad basin fortius

subgranulatim punctata punctis apicem versus sensim minoribus, pube vire-

scente-flavida maculisque paucis flavescentibus seriatist vestita, pube flavida in

medio fasciam latissimam transversam, latera versus dilatatam, male definitam

aut obsoletam formante. Pedes griseo-pubescentes. Latera pectoris (saepe)

maculaeque magnae transversae laterales segmentorum 1-4 abdominis dense

aurantiaco-tomentosa.

Long. corporis 9-14 mm.

dg, Antennae apicem elytrorum articulo 8° attingentes. Pedes antici

validiores femoribus incrassatis coxisque spina armatis. Segmentum ultimum

ventrale subplanum, haud lineatum.

©, Antennae corpore haud vel parum longiores. Femora antica minus

incrassata coxis Inermibus. Segmentum ultimum ventrale leviter convexum

linea media impressum.

Three males and four females, all from Tutuila: Pago Pago, 20-27.1x.1923 ;

Afono, 25.1x.1923; Amauli, 5.1x.1923 (Swezey and Wilders); 760-900 {ft.,

18.iv., 18.xu. (Kellers).

Easily distinguished from other known species by the large, orange-yellow,

well defined spots on the abdomen.

144 INSECTS OF SAMOA. .

16. Prosoplus, sp. ?

Three males from Upolu: Apia, x.1924; Malololelei, 2000 ft., 24.i1.,

14-30.vi.1924.

I have not been able to decide whether these specimens belong to an

already known species of the very difficult genus Prosoplus or not.

Lamprosybra, gen. nov.

(Ptericoptinorum.)

Caput subretractile, inter antennas et oculos sat profunde sulcatum ; frons

subquadrata aut supra paullulo angustata ; genae mediocres lobis inferioribus

oculorum breviores. Oculi rude granulati, supra subapproximati lobis inferiori-

bus magnis fere quadratis. Antennae corpore sesqui (3) vel parum (9)

longiores ; scapus brevis obovatus ; articuli 3 et 4 elongati, aeque longi, reliqui

breviores. Prothorax subtransversus, apicem versus leviter angustatus,

lateribus parum arcuatis subrectis, ad basin apicemque sulco transverso tenui

instructus. Scutellum apice rotundatum. Llytra subcylindrica, apice singu-

latim rotundata, nuda, nitida, basi apiceque exceptis profunde punctato-striata.

Pedes mediocres ; femora crassa, postica apicem segmenti 41 abdominis attin-

gentia aut superantia. Corpus supra fere nudum, nitidum, infra cum pedibus

tenuissime pubescens.

Nearly allied to the genera Sybra and Mynonoma, differing from the former

in having longer hind femora, from the latter in having the prothorax shorter

and not cylindrical, and from both owing to the glossy and nearly glabrous

elytra.

17. Lamprosybra sulcata, sp. n.

Nigro-fusca, supra fere nuda, infra cum pedibus tenuissime griseo-

pubescens ; elytra viridiaenea, nitida. Frons subnitida, remote punctulata ;

vertex sublaevis punctis perpaucis Impressus. Antennae fusco-brunneae, infra

breviter ciliatae, opacae, scapo obscuriore, articulis 5-11 ad basin griseo-

annulatis. Prothorax supra maequalis, irregulariter punctatus, utrinque linea

albido-tomentosa ornatus. Scutellum obtuse rotundatum apice pallide

pubescens. lytra ad basin pronoto tertia parte latiora, apice rotundata ;

CERAMBYCIDAE. 145

nitida, fere nuda, ad basin irregulariter punctata, apice laevia haud punctata,

inter basin et apicem profunde punctato-striata interstitiis laevibus nitidis,

pone medium guttis 9-10 albo- vel flavido-tomentosis serie transversa sub-

duplice ordinatis ornata, interdum etiam guttis 1-2 ante medium instructa.

Pectus utrinque rude punctatum. Abdomen laeve, nitidum. ‘Tarsi supra dense

albido-pubescentes.

Long. corporis 11-14 mm.

Three males from Upolu: Malololelei, 2000 ft., 24.11., 22.11.1924, 21.1v.1925

(Buxton and Hopkins); one female from Savaii: Safune, in the rain forest,

2000-4000 ft., 2.v.1924 (Bryan).

Var. fuscupennis, var. n.

A forma typica differt elytris fuscis (haud aenescentibus) guttis tomentosis

minoribus et paucioribus staturaque paullo minore.

Five males from Tutuila: two in the centre of the island, 900-1200 ft.,

Vi., 11.1918 (Kellers) ; one, Pago Pago, 22.ix.1923 (Swezey and Wilder).

This species is undoubtedly endemic on the Samoan Is.

18. Oopsis semigranosa Fairm.

Oopsis semigranosus Fairmaire, Pet. Nouv. Ent., 2, p. 289,1879 ; Ann. Soc. Ent. Fr. (6), 1, p. 475,

1881.

Two males, one female. Upolu: Apia, 1.x1.1925 (Buxton and Hopkins).

Tutuila: Amauli, 9.vi.23 (Swezey and Wilder).

19. Oopsis nutator F.

Lamia nutator Fabricius, Mant. Ins., 1, p. 142, 1787; Lamia nutator Oliv., Ent., 7, 67, p. 118,

t. 14, fig. 102, 1792 ; Oopsis nutator Fairm., Rev. Zool. (2), 2, p. 116, 1850; Oopsis nutator

Lacord., Gen. Col., 9, p. 619, t. 104, fig. 2, 1872 ; Oopsis nutator Auriv., Denkschr. K. Akad.

Wiss. Wien, Math.-Naturw. Kl., 89, p. 693, 1913.

Ten specimens. Upolu: Apia, 2, 8, 31.11.1924 (Armstrong); Apia,

i.—v.1924, xi.1925; Malololelei, 25.11.1924; Lalomanu xi.1924 (Buxton and

Hopkins). Tutuila: Pago Pago, 6.24.1x.1923 (Swezey and Wilder), iv.1918

(Kellers) ; Amauli, 6.1x.1923 (Swezey and Wilder).

A widely distributed, but somewhat variable species.

146 INSECTS OF SAMOA. .

20. Oopsis albopicta, sp. n.

Ab O. nutatore F., cui proxime affinis differt statura minore, pube grisea

multo tenuiore ; capite, lateribus pectoris, vittis pronoti (antice saepe abbre-

viatis) guttisque elytrorum (saepissime elongatis) albo-tomentosis.

Long. corporis 6-7 mm.

Ten specimens. Upolu: Apia, i., vi.1924, 11.1925; Malololelei,

14-30.v1.1924 ; Lalomanu, x1.1924 (Buxton and Hopkins). Tutuila: Pago

Pago, 24.1x.1923 ; Amauli, 6.1x.1923 (Swezey and Wilder). Manua Is.: Tau,

20.11.1926 (Judd).

This form is probably the same as that which Fairmaire (Ann. Soc. Ent.

Fr. (6), 1, p. 478, 1881) regards as a variety of O. nutator, or (Revue Zool. (2), 2,

p-. 117, 1850, as its male. Further investigations in the field are necessary to

decide the matter.

O. albopicta is somewhat intermediate between O. nutator and O. brunneo-

caudata Fairm.

21. Oopsis striatella Fairm. (?).

Oopsis striatellus Fairmaire, Pet. Nouv. Ent., 2, p. 289, 1879 ; Ann. Soc. Ent. Fr. (6), 1,

p. 477, 1881.

Two specimens, Upolu: Aleipata, 10.iv.1924.

Also one specimen, Tonga: Vavau, 9.111.1925.

The examples before me appear to agree well with Fairmaire’s descriptions.

22. Oopsis oblongipennis Fairm. (?).

Oopsis oblongipennis Fairmaire, Rev. Zool. (2), 2, p. 118, 1850.

Nine specimens, Upolu: Apia, 24.1.1924; Malololelei, 2000 ft., 25.11.1924

(Buxton and Hopkins). Tutuila: Amauli, 5-6.ix.1923 (Swezey and Wilder),

xu.1918 (Kellers). Manua: Tau, 20.11.1926 (Judd).

Also two specimens, Tonga: Vavau.

Individuals with the apex of the elytra obliquely truncate, and the outer

angle of the truncature somewhat produced have been referred to the present

species, and specimens with transversely truncate apex of the elytra to O.

striatella. All other distinctions between the two species seem to be variable.

CERAMBYCIDAE. 147

23. Oopsis, sp. ?

A single specimen from Tutuila, Pago Pago, 20.ix.1923 (Swezey and Wilder),

is much smaller (6 mm.) and more uniformly variegated with grey. Probably,

however, it is only a small example of O. oblongipennis.

24. Oopsis obtusipennis, sp. n.

Klongata, subcylindrica, obscure fusca aut fusco-brunnea, parce griseo-

pubescens, pone medium elytrorum maculis parvis elongatis 4-5, transversim

seriatis, lineaque utrinque pronoti antice abbreviata flavidis ornata. [rons

subnitida minute punctulata. Antennae brunneae apicem versus pallidiores,

flavescentes, et obsolete griseo-annulatae ; maris corpore longiores. Prothorax

subquadratus, supra remote, inaequaliter, rude punctatus. Scutellum rotun-

datum. lytra fere cylindrica, apice singulatim rotundata (omnino non

truncata) punctato-striata, striis nec basin nec apicem attingentibus, ad basin

irregulariter punctata haud eranulata, ante apicem fere laevia, interstitiis

striarum laevibus costulatis. Latera metasterni profunde punctata. Abdomen

laeve nitidiusculum. Tarsi supra albido-sericei.

Long. corporis 6-8 mm.

Two males, one female, Tutuila: Pago Pago, 1.1924 (Bryan); 1000-

1200 ft., x11.1918 (Kellers).

Distinguished by the cylindrical elytra with completely rounded apex, and

the finely punctured forehead.

Paratrypanius Auriv.

Deutsche Entomol. Zeitschr., Jahrg., 1908, p. 223, 1908.

In the new species described below, the spine on the prothorax is nearly

median as in Acanista Pasc. and Lagochirus Er. From both, Paratrypanius

differs in having the prosternum much narrower between the coxae. The

genus is evidently endemic, and the species are found only at higher altitudes

in the virgin forests.

25. Paratrypanius flavovittatus Auriv.

Paratrypanius flavovittatus Aurivillius, Deutsche Entomol. Zeitschr., Jahrg., 1908, p. 223, fig. 12,

1908.

Upolu: Apia.

Described and figured from a single specimen in the Deutsches Entomo-

logisches Nationalmuseum in Berlin ; not found by recent collectors.

Iv. 2 6

148 INSECTS OF SAMOA.

26. Paratrypanius savaiiensis, sp. n. (Plate I, fig. 2).

Nigro-fuscus, pube obscure cinerascente variegatus, infra fere unicolor

nigricans setis paucis minutis pallidis conspersus. Antennae pedesque brunneae ;

illae ad basin (art. 1-3) cinereo-maculatae, in medio (art. 4~7, basi apiceque)

pallide annulatae. Frons subquadrata brunneo- et cinereo-variegata. Oculi

ut in P. flavovittato supra modice distantes; lobi inferiores paullo longiores

quam latiores, genis plus duplo longiores. Frons inter antennas leviter depressa,

haud sulcata, tenuissime lineata. Prothorax transversus, utrinque prope

medium tuberculo triangulo obtuso armatus, nigricans leviter cinereo-mutans,

obsolete tuberculatus, ante medium impunctatus, ad basin serie irregulari

transversa punctorum instructus. Scutellum magnum, apice rotundatum,

unicolor, nigrum. LElytra ad basin truncata, humeris rotundatis, apice con-

junctim late rotundata, maculis parvis discretis vel confluentibus nigro-velutinis

variegata, maculisque 5-6 flavidis (una utrinque ad scutellum, singulisque

laterali pone humerum, discali paullo pone medium, lateralibus et discalibus

prope apicem) ornata, obsolete costulata. Femora et tibiae griseo-variegata.

Tarsi supra albido-sericei, articulus basalis posticorum 2° et 3° simul sumtis

parum longior.

Long. corporis 14 mim.

A single male (?), Savaii: Safune, between 2000 and 4000 ft. in the rain

forest (Bryan).

27. Paratrypanius bipunctatus, sp. n. (Plate I, fig. 3).

Fuscus, fere undique dense irregulariter punctatus, tomento flavo-griseo

vestitus. Caput haud punctatum, inter antennas et oculos anguste sulcatum.

Oculi supra approximati flavocincti; lobi inferiores subquadrati, genis vix

vel parum longiores. Prothorax transversus, utrinque prope medium spina

laterali longa armatus, dense irregulariter punctatus, pube grisea vestitus,

utrinque ad et pone spinam plaga dense flavo-tomentosa ornatus ; pronotum

5-tuberculatum. Scutellum magnum, impunctatum, apice subtruncatum, ad

basin saepe flavido-pubescens. Elytra ad basin recte truncata humeris parum

rotundatis, apicem versus fortiter angustata, apice angusto singulatim sub-

truncata aut obtuse rotundata, usque ad apicem punctata et granulata, paullo

pone medium puncto discali nigro et saepe etiam maculis paucis basalibus vel

CERAMBYCIDAE. 149

lateralibus flavidis ornata. Pectus et latera abdominis flavo-variegata. Pedes

griseo-pubescentes et fusco-maculati.

Long. corporis 15-18 mm.

Three males, Upolu: Malololelei, 2000 ft., 25.1v.1924, v1.1924.

A very peculiar and distinct species. The antennae of the male are more

than twice as long as the body.

28. Sciadella albofasciata Auriv.

Sciadella albofasciata Aurivillius, Denkschr. K. Akad. Wiss. Wien, Math.-Naturw. K1., 89, p. 693,

1913.

One male and one female, Upolu: Malololelei, 2000 ft., 24.vi.1924 (Arm-

strong), 17.iv.1925 (Buxton and Hopkins).

29. Sciadella variabilis Auriv.

Sciadella variabilis Aurivillius, Denkschr. K. Akad. Wiss. Wien, Math.-Naturw. K1., 89, p. 693, 1913.

Prothorax utrinque sub tuberculo vitta lata laterali, dense et discrete

punctulata, fusca aut nigricante praeditus. Elytra feminarum saepissime

sub humeris vitta nigra sublaterali, medium elytrorum haud vel vix attingente

ornata.

g, Femora postica magis incrassata, apicem abdominis attingentia vel super-

antia. Segmentum ventrale ultimum planum.

Q, Femora postica graciliora, apicem abdominis haud attingentia. Seg-

mentum ventrale ultimum crassius, apice foveatum.

Eleven males and twelve females. Upolu: lLeulumoega, 14.ix.1923 ;

Apia, 15.ix.1923, ii.1924, 2.ii1.1924, iv.1924, xii.1924, 29.iv.1925, vi.1995;

Malololelei, 2000 ft., 20, 24.vi.1924, 24.11.1924, 14-30.vi.1924, 17.iv.1925,

13.vu.26. Tutuila: 760-900 ft., iv.1918, 21.vu.1918; Pago Pago 9,

25.1x.1923 (various collectors).

Ab. 9, bilineata, ab. n. Elytra pone medium lineis binis obliquis nigris,

ad suturam plus minusve connexis ornata.

Six specimens, Upolu: Malololelei, 30.v1.,2.vi.1924 (Armstrong) ;

vi.1924 (Buxton and MHopkins); vu.1925 (Wilders). Tutuila: 1070 ft.,

21.v1.1918 (Kellers).

Ab. 9, trigonifera, ab. n.

150 INSECTS OF SAMOA.

Elytra utrinque prope medium plaga laterali triangula nigra, bene definita,

vittaque sublaterali nigra cum humero connexa ornata.

This form is already mentioned in my paper on the Samoa Cerambycids

referred to above.

Upolu: Malololelei, 2.vii.1924 (Armstrong). One specimen only.

30. Sciadella minuta, sp. n. (Plate I, fig. 4).

Pallide brunnea, supra pube cana maculisque denudatis fuscis plus minusve

variegata, infra immaculata. Frons transversa, inter antennas depressa.

Vertex inter oculos vix impressus. Antennae flavescentes, articulo sexto

apicem elytrorum attingente ; scapus unicolor, spinam pronoti haud vel vix

attingens, articulo 3° brevior; articuli 3° et 4° aeque longi, 6-11 ad basin

anguste et obsolete albido-annulati. Prothorax latitudine basali fere longior,

pone medium spina parva laterali armatus, lateribus inter spinam et apicem

rectis, supra leviter convexus, ad medium marginis apicalis tumidiusculus,

dense punctulatus, cano-pubescens vittis duabus abbreviatis discalibus

brunneis saepe ornatus, lateraliter sub spinam infuscatus. Scutellum rotun-

datum, albido-pubescens. Elytra leviter convexa, subcylindrica, apice singu-

latim rotundata, prope basin tuberculo obtuso elongato discali instructa,

subseriatim punctata, ante medium leviter transversaliter depressa, maculis

brunneis variegata, in parte apicali saepe distinctius cano-pubescentia. Pedes

flavescentes, vix fusco-variegati, haud vel parum albo-pilosi; femora anteriora

saepe In medio infuscata. Articulus basalis tarsorum posticorum 2° et 3°

simul sumtis brevior.

Long. corporis 4.5-5 mm.

G, ignotus.

2, Femora postica apicem segmenti 4 ventralis haud superantia. Seg-

mentum ventrale ultimum apice foveatum.

Three females, Tutuila: in the centre and at the eastern end, 1070-

1200 ft., 21.v1.1918 (Kellers) ; Pago Pago, 10.ix.1923 (Swezey and Wilder).

This small species is easily distinguished from its congeners by the body

being more convex and cylindrical, the pronotum somewhat longer, the antennae

paler and the hairs on the legs and the sides of the elytra scanty. The humeral

carina of the elytra is very slightly developed.

CERAMBYCIDAE. 151

Odontorhabdus Auriv.

In the females the subbasal spine of the first antennal joint is absent or

vestigial, and the hind femora do not reach the apex of the elytra.

31. Odontorhabdus dentipes, sp. n. (Plate I, fig. 5).

6, Punctatus, nitidiusculus, brunneus ; scapo, medio prothoracis clavisque

femorum plus minusve infuscatis. Oculi superiores ab antennis longe remoti,

tumidi. Antennae corpore longiores, brunneae; scapus articulo 3° parum

longior, antice dentibus 2-3, postice prope basin spima parva armatus. Pro-

thorax basin apicemque versus angustatus lateribus in medio valde rotundatis,

latitudine basali parum longior, punctatus, basin versus striolatus, vitta media

laeviuscula praeditus. Scutellum nitidum, nigrum. Elytra ad basin truncata

humeris obtusis, pronoti medio parum latiora, dense irregulariter punctata,

supra subplana depressione levi ante medium, apice conjunctim late rotundata

sutura plagisque 3-5 in singulo albido-setosis. Pedes brunneo-flavi; clava

femorum obscurior, crassa, brevis. Latera pectoris punctata. Abdomen

nitidum ; segmentum basale remote punctatum, reliqua laevia.

Long. corporis 4-4-5 mm.

©, Scapo antennarum inermi femoribusque posticis apicem elytrorum haud

attingentibus differt.

Two males, Upolu: Malololelei, 2000 ft., vii.1924 (Buxton and Hopkins) ;

Tutuila: 1200 ft., 21.vu.1918 (Kellers). One female, Tutuila: Pago Pago,

10.1x.1923 (Swezey and Wilder).

The males are easily distinguished by the denticles of the antennal scape,

which are situated nearly opposite the small subbasal spine.

32. Odontorhabdus rechingeri Auriv.

Odontorhabdus Rechingert Aurivillius, Denkschr. K. Akad. Wiss. Wien, Math.-Naturw.Kl., 89,

p. 694, 1913.

Three females: Upolu: Malololelei, 2000 ft., 25.iv., vi., 30.x1.1924.

33. Odontorhabdus flavicornis, sp. n. (Plate I, fig. 6).

Brunneo-fuscus, punctatus elytris antennisque pallidis. Oculi superiores

haud tumidi, ab antennis brevius remoti. Antennae corpore longiores, flavae,

152 INSECTS OF SAMOA.

summo apice leviter infuscatae ; scapus elongatus, leviter obconicus, sublaevis,

apice infra leviter dentatus spina subbasali minuta, articulo 3° longior. Pro-

thorax latitudine basali vix longior, in medio dilatatus lateribus rotundatis,

undique dense profunde punctatus absque linea media laevi. Scutellum

obtuse rotundatum, nigricans. Elytra pronoto haud latiora, ad basin truncata

humeris distinctis, apice conjunctim rotundata, profunde punctata punctis

apicem versus minoribus, flavo-brunnea et maculis irregularibus albido-setosulis

variegata. Femora fusca, apice valde clavata. Corpus undique setulis

adpressis albidis remote conspersum.

Long. corporis 3 mm.

A single specimen. Upolu: Malololelei, 2000 ft., 22.x1.1924.

34. Odontorhabdus teretiscapus, sp. n.

Fere undique setulis adpressis albidis remote conspersus, profunde rude

punctatus, nigricans, antennis, scapo excepto, margineque apicali pronoti

brunneis; elytra maculis irregularibus flavescente-pilosis ornata. Oculi

superiores ab antennis remoti, margine pronoti fere obtecti. Antennae corpore

paullo longiores; scapus articulo 3° longior, leviter arcuatus, fere cylindricus,

ad basin ante spinam profunde constrictus, apice infra dentatus. Prothorax

leviter transversus, utrinque rotundatus, subglobosus, undique rude, aequaliter

punctatus. Scutellum parvum nigrum. LElytra ad basin truncata humeris

distinctis, pronoti medio angustiora, apicem versus parum angustata, apice

conjunctim late rotundata, dense punctata, sutura costato-elevata postice

latiore. Femora valde clavata, postica apicem elytrorum superantia.

Long. corporis 3 m.

One specimen, Upolu: Malololelei, 2000 ft., vi.1924.

Perhaps only a colour aberration of O. flavicornis.

Kry to THE MALES oF ODONTORHABDUS.

A. First joint of antennae not dentate or angulate on under side at apex. Pronotum

somewhat narrower in middle than elytra at base, finely and irregularly punctured, with

median line glossy and nearly smooth.

(a) Antennae, legs and prothorax with long (erect) hairs. First joint of

antennae strongly obconical, nearly pyriform, unarmed on upper

side. Upper eyes distinctly elongate, oblique, anteriorly

approximated : : : : : : : : . O. rechingert Auriv.

CERAMBYCIDAE. 153

(b) Antennae nearly naked, only very shortly ciliated on under side.

Prothorax and legs only with very small, whitish setulae. First

joint of antennae narrower at apex, on upper side with two blunt

teeth nearly opposite subbasal spine. Upper eyes very convex,

semiglobose . : : : : : : é . O. dentifer Auriv.

B. First joint of antennae at apex on under side with a distinct tooth or prominence,

nearly cylindrical or only slightly tapering between apex and subbasal spine. Pronotum in

middle at least as broad as elytra at base, strongly punctured all over and without smooth

median line. yes rather flat. Elytra with yellowish-white spots.

(a) Antennae pale yellow. Ground colour of elytra brownish-yellow . O. flavicornis Auriv.

(6) Antennae brownish, first joint blackish. Ground colour of elytra dark

brown . ; j : : : : : : : . O.teretiscapus Auriv.

Leptocyrtinus, gen. nov.

Corpus remote setulosum; antennae pilosae. Caput inter antennas sub-

planum. Frons transversa. Oculi late divisi; lobi superiores rotundati,

ab antennis parum remoti. Antennae feminae corpore parum longiores ;

scapus elongato-conicus articulo 3° longior. Pronotum elongatum, utrinque

leviter rotundatum, latitudine basali multo longius. Scutellum breve, rotun-

datum, transversum. LElytra ad basin pronoto haud latiora humeris nullis,

subcylindrica, supra plana, apice conjunctim late rotundata, subseriatim

punctata. Pedes breves ; femora valde petiolato-clavata.

Allied to the genus Cyrtilus Auriv., of Queensland, but differmg in having

the third joint of the antennae much shorter than the first, and the elytra more

cylindrical, neither narrowed nor declivous towards the base.

35. Leptocyrtinus nitidus, sp. n. (Plate I, fig. 7).

2, Niger, nitidus, submetallicus, articulis antennarum femoribusque ad

basin pallidis; vertex nitidus sparse punctulatus linea media brevi impressus.

Prothorax punctatus supra in medio transverse striolatus. Elytra supra maculis

binis elongatis dense albo-pubescentibus ornata. Latera pectoris profunde

punctata. Abdomen fere laeve. Pedes pallidiores; clava femorum leviter

infuscata.

Long. corporis 2 mm.

One female, Upolu: Malololelei, 2000 ft., 22.x1.1924 (Buxton and Hopkins).

Fic.

INSECTS OF SAMOA.

EXPLANATION OF PLATE I.

1.—Ceresium reticulatum, sp. n.

2.—Paratrypanius savaiiensis, sp. 1.

3.—Paratrypanius bipunctatus, sp.n. .

4.—Sciadella minuta, sp. n.

5.—Odontorhabdus dentipes, sp. 1.

6.—Odontorhabdus flavicornis, sp. 0.

7.—Leptocyrtinus nitidus, sp. 0. .

SPrUP res

139

148

148

150

151

sol

. 153

Sn viewA aoqodosb awhdy

INSECTS OF SAMOA.

.

VIA 2owrossenl{, aishd

.- 9G CT vir arbstoor arsovetegsorgd .V .orL

‘PLATE I.

ito face p. 154

154 INSECTS OF SAMOA.

EXPLANATION OF PLATE I.

Fie. 1.—Ceresium reticulatwm, sp. n. -p. 189

» 2.—Paratrypanius savaiiensis, sp. n. p. 148

» 9.—Paratrypanius bipunctatus, sp. n p. 148 i

»» 4.—Sceiadella minuta, sp. n. p=ld0

3, 5.—Odontorhabdus dentipes, sp. n. p. 151

Re 6.—Odontorhabd ts flavicornis; sp. n. p. 151

» 1. —Leptocyrtinus nitidus, sp. n. . p. 153

PLATE I.

Fie. 1. Ceresium reticulatum Auriv. Head and prothorax ws ae ac Been US!)

Fie. 2. Paratrypanius savaviensis Auriv. Type .. ibe oh KS MM iae ees ly chs

Fic. 5. Paratryparius bipunctatus Auriv. .. a he a at ey 45) pu kts

Fie. 4. Sciadella minuta Auriv. SU RR EN MON a aa iis, Pale Drea Ap oi ig RA 9 115)

Fie. 5. Odontorhubdus dentipes Auriv. g .. os Es ie a8 oe “ra padol!

Fig. 6. Odontorhabdus flamcornis Auriv. ae Fo vi a a de Pe tan |) Ope gay

Fie. 7. Leptocyrtinus nitidus Auriv. Type .. ee ve ie ae ole .. p. 153

BRIT. MUS. (NAT. HIST.) INSECTS OF SAMOA.

/

UY

PART IV. PLATE |.

[To face p. 154

BRENTHIDAE

Von R. Kuerner, STETTIN

(Mit 4 Abbildungen.)

Von den Samoa-Inseln sind bisher keine Brenthiden bekannt geworden. Man

ware geneiot anzunehmen, dass kein Vertreter der Familie soweit dstlich mehr

vorkime, aber es ist noch eine Art von den Gesellschaftsinseln (Tahiti) bekannt ;

bis dahin also miissten auch Brenthiden zu finden sein.

Das Auffinden von Brenthiden auf Samoa hat einen eminenten faunistischen

Wert.

Die Brenthiden haben sich aus zwei Urzentren entwickelt, deren erstes das

tropische Afrika, das zweite ein grosses Landmassiv umfasste, das sich von

Melanesien iiber Neu-Guinea nach den Philippinen hinzog, und die Molukken,

wenigstens zum Teil, umfasste. Bei Betrachtung des vorliegenden Materials

kommt nur das athiopische Zentrum in Frage. Von dort aus wanderte ein

Teil, vermutlich tiber die Antarktis, nach Stidamerika, dort neue Formen bildend,

oder wandte sich, und das betrifft die Hauptmasse, nach Osten und ist auf

seinem langen Zuge bis Tahiti vorgedrungen.*

Die athiopischen, in die neotropische Region gewanderten Formen finden

sich noch auf den Marquesas-Inseln. Es ist bisher kein Fall bekannt geworden,

wo die beiden Wanderziige sich getroffen hitten, es fragt sich also, ob beide

Auslaufer irgendwo zusammentrefien. Trifft das zu, so kénnen die Beriihrungs-

punkte nur auf den polynesischen Inseln liegen, insofern ist jeder Fund aus

dieser Gegend von Bedeutung.

Ks hegen zwei Arten vor: ein Cyphagogus und ein Chalybdicus, beide

gehoren dem nach Osten vorgedrungenen athiopischen Stamm an.

* The author’s derivation of the Samoan Brenthidae seems to be unnecessarily complex.

Both the genera would appear, from the facts given in the paper, to have spread from Malaya

and Melanesia into the Central Pacific; I suggest that this explanation of the occurrence of two

species in Samoa is simple, and also consistent with what is known of the origin of the flora and

fauna of Samoa.—P. A. Buxton.

155

156 INSECTS OF SAMOA. -

Betrachtet man nun die neuen Arten in ihrem Verhaltniss zu den Gat-

tungsgenossen, so ergibt sich folgendes Bild :

Cyphagogus. Die Gattung umfasst 40 Arten, gehdrt also zu den artreichen.

Sie findet sich auf Ceylon, Vorder- und Hinterindien, den grossen Sunda-Inseln,

Formosa, Japan, Philippinen, Celebes, Molukken, Neu-Guinea und Australien.

Hier lag bis jetzt die Ostgrenze. Nun kommt die neue Art von Samoa hinzu,

so dass sich das Verbreitungsareal damit weit nach Osten erweitert. Die

Gattung ist sehr uniform und geht in keine andere iiber.

So einheitlich die Gattung auch habituell ist, so lassen sich doch zwei

Gruppen unterscheiden, die durch die Ausfarbung getrennt sind. Die Haupt-

masse ist einfarbig schwarz, eine kleinere Anzahl ist bunt. Es ist auffallig, dass

die bunten Arten an den Randzonen auftreten, im Massiv aber garnicht oder

doch nur sehr schwach. So finden sich die bunten Arten in: Australien Neu-

Guinea, Philippinen, im Osten, Indien und Ceylon im Westen, dazu kommt

nun die neue Art von Samoa. Die dstlichen Arten sind nicht in das Massiv

vorgedrungen, die westlichen finden sich, allerdings nur in Ausnahmen und

ausstrahlend, auf den Sunda-Inseln.

Chalybdicus. Ausser der neuen Art ist nur eine von den Neu-Hebriden

bekannt. Die Gattung ist also rein polynesisch.

Mit Ausnahme der myrmekophilen Formen, sind alle Brenthiden xylophag.

Sie kommen also auch nur in Gebieten vor, in denen noch Baumbestand

vorhanden ist. Biologisch sind die Holzbewohner wieder in zwei Gruppen

gespalten: Xylophage und Brut- oder Raumparasiten. Zur ersten Gruppe

gehort Chalybdicus ; sie entwickelt sich im Cambium kranker oder anbriichiger

Baume. Cyphagogus dagegen ist Brutparasit bei anderen Holzkifern, meist

bei Platypodiden, die sie mit ihren starken Mandibeln aus den Bohrgingen

herausziehen um daselbst ihre Kier abzulegen. Die Larven leben dann von

den Wirtslarven und verpuppen sich in den Giangen, beziehungsweise Puppen-

wiegen der Wirtstiere. Der zylindrische Bau der Cyphagogus-Arten ist der

Lebensweise angepasst, die kriaftigen Vorderbeine kénnen in den Prothorax

eingeleet werden.

BRENTHIDAE. 157

Cyphagogus Parry.

Trans. Ent. Soc. Lond., v, p. 182, 1849.

1. Cyphagogus samoanus, sp. n.

Kopf und Fihler rotbraun, Hals dunkelbraun, Prothorax tief schwarz-

braun, im vorderen Viertel hellbraun, Vorderrand und Kanten des Prothorax

verdunkelt, Elytren hellrotbraun, mit 3 schwarzen Binden, 1. an der Basis,

2. auf der Mitte, 3. am Absturz, 2. und 3. Binde zuweilen an der Sutura und

am Aussenrand verbunden, Beine rotbraun; am ganzen Korper stark glan-

zend. Kopf gegen den Hals nur wenig verschmilert, abgeplattet, zwischen den

Augen mit zarter Vertiefung, Punktierung nur an den Augen; Unterseite mit

tiefer, schmaler Gularrinne; Riissel abgeplattet, parallel, Vorderrand flach

nach innen gebuchtet, Punktierung einzeln,

an den Randern deutlicher. Fiihler ohne

besondere Merkmale. Prothorax robust, an

der Basis zuweilen schwach gefurcht, einzeln

aber deutlich punktiert, unbehaart, Conus ee a ee cetera

f : : sp. n., Farbenverteilung auf den

breit, kraftig, Seitenriinder mehr oder weniger Elytren.

rauh. Suturalrippe auf den Elytren breit,

2. kurz, schmal, nur an der Basis vorhanden, 3. breit, 4. schmal, in der Mitte

fast linear, 5. gleich der 3., die seitlichen Rippen flach, gleichbreit, nur die 6. ist

so breit wie die 3. und 5., alle Rippen mit kraftiger, unregelmissiger Punktie-

rung, unbehaart. Vorder- und Mittelbeine normal, Hinterbeine und Schienen

desgleichen, Metatarsus so lang wie das 2. und 3. Glied zusammen, Skulptur

und Behaarung normal, Klauen walzig. Metasternum schmal gefurcht, Punk-

tierung deutlich, 1. und 2. Abdominalsegment ungefurcht, zart punktiert,

3.-5. normal.

Lange (total, ohne Beine): 5-6 mm. Breite (Proth.) 1 mm. circa.

Samoa: Upolu, Apia, iii.1924 (Buxton und Hopkins). 2 gg.

Typen im Britischen Museum.

Wie bei allen bunten Cyphagogus-Arten, unterliegt die Ausfirbung auch

bei C. samoanus bestimmten Schwankungen, die zum Teil in der Ausreife des

Individuums begriindet sind. Zur Characterisierung mussten diejenigen Beleg-

stucke dienen, deren Ausfirbung am weitesten vorgeschritten war.

In Habitus und Ausfirbung schliesst sich C. samoanus den australischen

Arten an. Zum Vergleich sind heranzuziehen : C. delicatus Lea, C. suspendiosus

158 INSECTS OF SAMOA. |

Lea, C. hausert Kleine. Die Differenzen gegen die genannten Arten sind

folgende :

(a) Gegen C. delicatus Lea.—

Jede Behaarung fehlt. Die Elytrenrippen sind ohne Borsten. Die

Elytren haben 3 dunkle Binden. Der Prothorax ist deutlich

punktiert.

(6) C. suspendiosus Lea.—

Der Kopf ist an der Basis nicht verschmilert. Ausserdem kommen die

bei C. delicatus genannten Differenzen in Betracht.

(c) C. hausert Kleine.—

Prothorax in der Region des Conus rotbraun, Elytren mit 3 dunklen

Binden. Conus nicht rundlich, sondern scharfkantig, unbehaart.

Abdomen. ungefurcht.

Von allen bekannten Arten durch die Ausfirbung der Elytren sofort trennbar.

Chalybdicus Kleine.

Arch. Nat., xxxvii, A, 3, p. 218, 1922.

2. Chalybdicus reverens, sp. n.

3; Kupferglinzend, Anhinge der Elytren rotbraun, Fihler, Beine und

Unterseite des Korpers griinschwarz, die dunklen Korperteile mit starkem

ABBILDUNG 3.—Chalybdicus ABBILDUNG 4.—Chalybdicus reverens, weiblicher

reverens, gezilhnte Basis Fiihler.

der Elytren.

Glanz. Kopf auf Oberseite und seitlich tief und gross punktiert, Unterseite

mit klemeren, zerstreuten Punkten, Kopfiurche ober- und unterseits durch-

gehend ; Riissel mit Ausnahme der breiten Furche mit sehr grossen Punkten,

BRENTHIDAE. 159

die auch auf der Unterseite gross bleiben, Mittelfurche auf der Unterseite breiter

als auf dem Kopf, Mesorostrum flach, schmal gefurcht, kraftig punktiert, Pro-

rostrum schmaler als das Mesorostrum, mit breiter Mittelfurche und flachen

Seitenrindern, Punktierung einzeln, auf dem verbreiterten Spitzenteil dicht,

tief punktiert, nach dem Vorderrande zu nimmt die Punktierung ab. Fiihler

Abb. 2. Prothorax lang, eiférmig-elliptisch, tief und grob punktiert, gegen

den Vorderrand und seitlich nimmt die Punktierung ab, Prosternum zerstreut,

zart punktiert,—Basis der Elytren gezihnt (Abb. 3.), Seiten in der Mitte etwas

verenet, Hinterrand mit fliigelartigen Anhingen, die gegen das Ende nach oben

gebogen sind, 1.3. Rippe mit grubigen Querfurchen. Metasternum gefurcht,

zart punktiert, nur am Seitenrand grob und gross punktiert, 1. und 2. Abdominal-

segment ungefurcht, 3-5. Segment matt, alle Segmente einzeln punktiert,

Apicalsegment behaart. Beine normal.

Q, Kopf kiirzer, Prorostrum stielrund, Fihler Abb. 4. Elytren ohne

Anhiange.

Lange (total): 13-25 mm. Breite (Prothorax): 1-5-2-2 mm.

Samoa: Upolu, Malololelei, 25.iv.1924, 23.11.1925, 2000 F. (Buxton und

Hopkins); Rain-forest, 2000 ft. (Bryan). Savaii: Safune, v.1924 (Bryan).

6 $d; 2 29.

Typen im Britischen Museum.

Von der einzigen bekannten Art, hahnei Kleine durch ganz andere Farbe,

schlanken Habitus, Ungleichheit des 2-8. Fiihlergliedes und anders geformte

Elytrenanhange verschieden. Variationsneigung war nur sehr gering.

ABBILDUNGEN.

Abbildung 1. Cyphagogus samoanus, sp. n., Farbenverteilung auf den Elytren.

» 2. Chalybdicus reverens, sp. n., mannlicher Fihler.

ns 3. a a gezahnte Basis der Elytren.

soa we - weiblicher Fiihler.

bra) Eels

ae

ANTHRIBIDAE

By Kari Jorpan, Pu.D., ZooLtogicaL Musrum, TRING

(With 11 Text-figures.)

Very few Anthribidae are known from the Pacific islands east of New Guinea.

Considering the abundance of species in New Zealand, New Guinea, and the

Malay Archipelago, we must expect the family to be well represented also on

the Solomons and the islands farther east. The present collection is a most

welcome contribution to our knowledge of the distribution of this family.

Though the collection includes representatives of only fourteen species, no

fewer than nine of these are new, two of them representing new genera. With

the exception of the first three in the list here published, all the species obtained

are small. As such Anthribids generally escape the notice of the collector who

does not specially search for minute insects, some of the new species may have

as wide a distribution as Araecerus vieillardi, which is common in Samoa and

New Caledonia and extends across New Guinea as far west as the Philippines.

One species, Scvrtetinus pacificus, has its nearest relatives in the far away

Seychelles, but new discoveries in the Malay Archipelago probably will link up

these widely separated countries. Two, Cerambyrhynchus schoenherri, and

Proscopus veitchi, are restricted to the Fiji-Samoan groups of islands and are

related to other South Pacific genera, while the affinities of all the other species

are with Indo-Malayan and particularly Philppinian forms.

1. Cerambyrhynchus schoenherri Montrouz., 1855.

The genus, which is nearest to Acanthopygus Montrouz. (1860), of New

Caledonia, and Rhinotropis Fairm. (1881), of Fiji, contains only one species,

originally described from material from Wallis Is., common in Fiji and Samoa.

Montrouzier named the species after Schoenherr, but erroneously spelt the name

of that famous Coleopterist with a double n ; we have adopted the corrected

spelling, as has been done by everybody. The description appeared in Ann.

161

162 INSECTS OF SAMOA. .

Soc. Agric. Lyon, vii, 1855, but usually the separate issue of the Faune de Vile

de Woodlark, 1857, is quoted.

The series obtained well illustrates the great variability in size usual in

this species, the smallest specimen (a 9) measuring in a straight line from the

anterior margin of the pronotum to the apex of the pygidium 5:5 mm., and

the largest (a 9) 15 mm.

A series from Upolu: Apia, i, i1., iv., v., vi.; also obtained by J. S.

Armstrong, 11.1924. Tutuila: Pago Pago, ix. 1923 (Steffany).

Notiana, gen. nov.

Near Sentor Schoenh., 1839. Proboscis with five dorsal carinae ; its apical

margin with broad shallow sinus. Labium not divided into two distinct lobes.

Antennal grove foveiform. Antenna not reaching middle of prothorax.

Genotype: JN. buatont,sp.n. Here also belongs Sintor superciliaris Jord.,

1895, of the Philippines.

2. Notiana buxtoni, sp. n. (Text-fig. 1).

3, Robust, dark brown, here and there rufescent, variegated with grey

and yellowish pubescence, minutely coriaceous, with no distinct punctures

apart from the rows on the elytra.

Proboscis a little longer than it is apically

broad, median carina nearly reaching to apex,

divided at base and continued as two carinae across

frons, the groove between these two carinae re-

duced on occiput to a narrow channel; the lateral

carinae abbreviated ; middle of under side of pro-

boscis cariniform ; area between gular sinus and

antennal groove bicarinate, the depression between

these two ridges continuous with a groove situated

at some distance from the base of the gular sinus.

Frons broader than half the rostrum, both grey,

occiput for the greater part brown. Distal seg-

ments of antenna paler brown than proximal ones,

segment 3 nearly as long as 4th and 5th together,

4th to 8th gradually decreasing in length, 8th about twice as long as apically

Text-FIa. 1.—Notiana buatoni,

proboscis, head.

ANTHRIBIDAE. 163

broad, conical, club broad, 9th not quite symmetrical, triangular, nearly half as

long again as broad, 10th broader than long, 11th as long and as broad as 9th,

but ovate. |

Pronotum marmorated with grey, conical, one-eighth broader than long,

with two dorsal depressions from near apex to carina, united behind, sides like-

wise flattened, particularly in posterior half; carina concave in middle, convex

halfway to side, behind it on each side a yellowish spot bounded dorsally by a

blackish spot.

Elytra almost one-half longer than broad, parallel from base to middle and

then rounded, dorsally depressed to fifth interspace, at base between sutural

interspace and fifth a large blackish conical elevation, another, smaller, elevation

at the beginning of apical declivity, more lateral than the basal hump, dorsally

not much raised above the level of interspace five ; depressed dorsal area grey,

with a few brown spots, sides brown and rather profusely spotted with grey,

area between posterior tubercles brown, bearing a few grey spots, apical

declivity grey marbled with brown, basal two-thirds of suture slightly yellowish.

Pygidium a little broader than long, gradually narrowing, sides straight, apex

truncate, slightly smuate in middle, the angles rounded off.

Middle of sterna sparingly grey, sides of pronotum marbled with grey,

sides of meso- and metasterna densely pubescent, yellowish, a brown lateral

smear at base of metepisternum and another near its apex. Abdomen densely

pubescent, grey, with a row of brown spots in middle of side, and an additional

lateral spot on segments 4 and 5. Legs blackish, with sparse grey pubescence,

femora and upper side of tibiae with ill-defined blackish markings, tarsi

unicolorous, foretarsus about one-fourth shorter than foretibia.

Length: (excl. of head) 7 mm.

Upolu: Apia, 29.11.1924, one 3.

3. Eucorynus stevensi Pasc., 1859.

Widely distributed in the Papuan subregion. Not formerly known to me

from anywhere east of New Guinea.

Upolu: Apia, 18, 24.1v.1924, two 99; Tafua Volcano, 19.iv. (Swale),

one pair.

Iv. 2 7

164 INSECTS OF SAMOA. ©

4. Proscopus veitchi Jord., 1924 (Text-figs. 2 and 3).

Jordan, Nov. Zool., xxxi, p. 256, 1924.

This species, of which the type was obtained in Fiji, does not seem to be

rare in Samoa. Its face (Text-fig. 2) is vertical, almost flat, bounded on each

side by a sharply marked carina, which ends dorsally at the tubercle of the

antennal groove. From above the proboscis is not visible (Text-fig. 3).

Trext-FiG. 2.—Proscopus TExt-FIG. 3.—Proscopus veitchi,

vettchi, head. head and pronotum.

Upolu: Aleipata, Lalomanu, x1.1924, one 9; 23.1x.1916, one 2. Tutuila:

Leone Road, 19.11.1924 (Bryan), one 9; Amauli, 5, 6, 7.ix.1923 (Swezey and

Wilder), 6 gg, 2 92; 760-900 ft., iv., and 1070 ft., vi. (Kellers).

5. Araecerus fasciculatus Deg., 1775.

Originally an Oriental species, now distributed over nearly the whole of the

tropics and frequently found in stores in Europe. Does much damage to beans

of cocoa, coffee, etc. One of the largest species of this genus. Tibiae, or at

least the foretibia, spotted with brown on upper side; club of antenna slender,

with its three segments strongly asymmetrical.

Upolu: Apia, vi.1925, damaging stores of nutmeg.

ANTHRIBIDAE. 165

6. Araecerus vieillardi Montrouz., 1860.

As in A. fasciatus, the tibiae spotted with brown; but the club of the

antenna nearly symmetrical and the foretibia of the male armed with a strong

apical mucro.

Length: 2-7-3-8 mm.

A series of both sexes from :

Upolu: Apia, ii., iil., iv., v., vi., X., xi, some on cotton; Vailima, 600 ft.,

vi., X., xil.; Malololelei, 2000 ft., 111.1924. Savaii: Fagamalo, xi.1925; Safune,

lower forest, 1000-2000 ft., v.1924 (Bryan); Lotopa, 11.1917, eating cocoa

pods (Swale). Tutuila: Leone Road, iii.1926 (Judd); various altitudes from

760-1200 ft., iv., vi., viii., x., and also Pago Pago, iv. (Kellers).

Tonga Is.: Nukualofa, 1.1925.

7. Araecerus eudelus, sp. n. (Text-fig. 4).

Near A. nitidus Jord., Nov. Zool., xxxi, p. 250 (1924), of Fiji. Colouring

variable: ground blackish or ochraceous-rufous, centre of pronotum brown,

this area usually divided by a pale median line and each half posteriorly bifid ;

elytra usually grey marmorated with brown to a vari-

able extent, sometimes blackish, spotted with luteous oa

grey; legs ochraceous, middle of femora and apical

half or third of hind-tibia, less often also the apex of the

other tibiae and the mid- and hind-knees brownish.

Club of antenna broader than in A. nitidus. Pro-

notum more strongly reticulated, angle of carina more i: A

acute and the basal angle of pronotum more produced.

Punctures of under side large, abdominal segments pi aie Serre Ear NO

? eudelus, lateral aspect

1-3 or 1-4 with a basal and an apical row of large of pronotum.

punctures, in middle of segments usually some additional

punctures. Intercoxal process of mesosternum triangular, truncate-rotundate

at apex.

In male, the pygidium broader than long, its apex almost evenly rounded ;

sides oblique, not parallel; anal sternite rounded in middle, convex ; foretibia

and -tarsus woolly on under side, tibiae without mucro.

In female, the pygidium one-third broader than long, rotundate-angustate,

the apical projection abrupt.

166 INSECTS OF SAMOA.

Length (head excl.) : 2:0-2:6 mm.

A series from :

Tutuila: Pago Pago, xi.1924 (type); also obtained in ix.1923 (Swezey

and Wilder) ; 900-1200 ft., vi., and 760-900 ft., iv. (Kellers). Upolu: Apia,

v.1924 (Bryan) ; 1x.1923 (Swezey and Wilder) ; Tuaefa and Leulumoega, 1x.1923

(Swezey and Wilder) ; Vailima, 1.1925; Malololelei, 2000 ft., vi.1924. Manua

Is.: Tau, 1.1926 (Judd).

8. Araecerus sublevis, sp. n.

Nearest to A. greenwood Jord., l.c., p. 246, of Fiji. Surface-structure less

obsolete. Pronotum reticulate-coriaceous, but the reticulation less regular and

very much less distinct than in A. eudelus, sp. n., angle of carina a little smaller

than 90°, z.e. much less acute than in A. eudelus, on each side of disk of pronotum

a large brown patch, which is variable and usually extends backwards and

forwards laterally. Elytra elongate as in A. eudelus, with the following variable

brown markings: a spot each on shoulder, on subbasal swelling and behind it,

a streak on anterior half of suture, an interrupted or nearly complete band

below middle and another in front of apical declivity, the markings sometimes

more or less connected with one another. Legs almost uniformly pale rufous,

without distinct spots, middle of femora and apices of tibiae usually darker.

On segments 1-3 of abdomen a basal and an apical row of large punctures, the

apical row obsolete in centre of segments, on 4 a basal row only.

In male the foretibia and foretarsus villose on under side, without teeth ;

pygidium a little longer than broad, narrowing towards apex, which is

rounded ; anal sternite truncate-emarginate, flattened in middle, more than

twice as long in middle as the preceding segment.

In female the pygidium as long as broad, almost gradually narrowing into

a small projection, sides slightly rounded.

Length : 2:3-3-1 mm.

A small series from :

Tutuila: Pago Pago, ix.1923 (Swezey and Wilder), iv.1924 (Bryan) ;

Afono Trail, ix.1923 (Swezey) ; 760-900 ft., iv. 1000 ft., vili.; 1200 ft., vil.

(Kellers). Upolu: Sliding Rock, Tuaefu, ix.1923 (Swezey and Wilder) ;

Aleipata, iv., and Malololelei, 2000 ft., iv.1924, type, 9.

Savage Is.: Niue, viii.1918 (Kellers), one 9.

ANTHRIBIDAE. 167

9. Deropygus fornix, sp. n. (Text-figs. 5 and 6).

Similar to D. arcus Jord., 1924, of the Philippines; colour and markings

the same except that the three postmedian spots on the pronotum are isolated,

and the two subapical spots on each elytrum confluent. Frons slightly narrower

than the first segment of the antenna ; eye strongly transverse (antennae, except

basal segments 1-4, missing in the type). LHlytra broadest at base, more

than half as long again as broad, longer than in D. arcus. Pygidium of nearly

Text-Fie. 5.—Deropyqus fornix, TExt-FIe. 6.—Deropygus fornix, lateral

pygidium. aspect of posterior segments.

even width from base to apex, narrower at base than in D. arcus, three times

as long as broad. Abdomen even more strongly arched than in D. arcus, the

highest point of the arch slightly above the margin of the elytra. Anal sternite

almost vertical, impressed at apex, with a brush of short broad bristles on each

side.

Length : 3°2 mm.

Tutuila, 900-1200 ft., 30.vi.1918 (Kellers), one 3.

Stenorhis, gen. nov.

Proboscis very short, transverse, in front of antenna not longer than see-

ment 1 of latter is broad, apical margin convex in middle. Labiophore broad

and short, mandible almost straight on outer side. Antennae close together,

the groove a well-defined sulcus which extends downwards, ending on a level

with the buccal sinus; segments 1 and 2 much thicker than 3-8, Ist

twice as long as 2nd, 3rd to 7th about equal in size, 8th a little shorter, club

7%

168 INSECTS OF SAMOA. .

slender, 9th and 10th conical, nearly alike, 11th elongate-elliptical, shghtly longer

than 10th, shaft and club with a number of fairly long bristles. Scutellum

longer than broad, oblong, apex rounded. Hye lateral, round, coarsely facetted

as in Deropygus Sharp, 1891, not very prominent. Prothorax long, antecoxal

portion twice as long as the coxa is wide; dorsal carina basal, lateral carina

extending much beyond middle, but not quite reaching to apex, angle of carina

slightly obtuse. Elytra cylindrical. Legs short, hind tibia with prominent

notch, which bears a crest of bristles ; tarsal segment 1 at most one-half longer

than apically broad, tooth of claw long.

Genotype : Stenorhis ampedus, sp. n.

Near Deropygus Sharp, 1891, but distinguished inter alia by the very short

rostrum and long prothorax.

9a. Stenorhis ampedus, sp. n. (Text-fig. 7).

More than twice as long as broad; rufescent brown, with long brownish

grey pubescence which lies flat on the derm, but does not quite conceal the

eround. Club of antenna as long as segments

3 to 7 together. Prothorax a little broader before

middle than at base, coarsely reticulated, angle

of carina nearly 90°, not rounded-off. Hlytra

punctate-striate, the punctures very large, the

interspaces smooth and glossy, impunctate ex-

cept for the minute points in which the

pubescence is inserted. Pygidium coriaceous-

reticulate, slightly convex, almost semicircular,

apical margin incrassate. Prosternum almost

uniformly punctate, the punctures large and well separated from each other.

Metasternum with the punctures smaller. Abdomen minutely punctate, seg-

ment 1 with a basal row of large punctures. Third tarsal segment broad.

Length: 2:4 mm.

Ellice Group: Nukufetau, 20.xii.1924, one ¢; not known to occur in

Samoa.

Trext-Fric. 7.—Stenorhis ampedus,

head.

ANTHRIBIDAE. 169

10. Melanopsacus hopkinsi, sp. n. (Text-fig. 8).

One of the larger species of this genus, with the basal angle of the prothorax

very strongly produced.

Pitchy black, base of antenna and tarsal claws dark rufous; markings

grey, silky, well defined. Proboscis and head reticulate, grey, occiput black.

Pronotum rugate-reticulate, with the

following grey markings on each side

(indicated in Text-fig. 8): a broadish

stripe along carina curving forward at

both ends halfway to apex ; between the

two branches a short projection ; a broad

apical border not quite reaching to upper

portion of eye, somewhat dilated at upper

end, laterally connected with the basal

border ; in the black dorsal apical area

a spot near middle line; lateral carina Taxr-rc. 8.—Melanopsacus hopkinst,

S-shaped, with the upper portion of the lateral aspect of pronotum, left side.

S quite short and the lower long.

Scutellum triangular, apex pointed and depressed. LHlytra punctate-

striate, interspaces granulose, short basal row of punctures not joining the

sutural row ; the following grey markings on each elytrum ; four linear spots

at base, more or less connected with one another at basal margin; a line in

sutural interspace from near base to two-thirds ; two linear spots behind sub-

basal swelling, two others farther lateral ; a transverse band of seven spots, two

of them median, the next three postmedian and the remaining two sublateral

and median; before apical declivity four linear spots in interstices 2, 4, 6, 8 ;

a marginal spot below shoulder, followed by a marginal line which reaches

beyond middle and reappears at apex, where it joins a line in interspace 2.

Pygidium rugate-reticulate, broader than long, strongly narrowing towards

apex, which is evenly rounded.

Prosternum strongly punctate, a narrow line from coxa upwards impunc-

tate, as is also a large basal lateral area from the carina downwards. Abdomen

minutely and densely punctate, at the bases of the segments a row of large

punctures, in middle these punctures more numerous and spread over segments

1 to 3, being particularly numerous on 1 and 2.

170 INSECTS OF SAMOA.

Length: 3-3 mm., breadth 1-7 mm.

Upolu: Apia, xi1.1924, one 9.

11. Melanopsacus dulcis, sp. n. (Text-figs. 9 and 10).

Smaller than M. hopkinsi, paler pitchy, legs more or less rufescent, markings

golden as in M. ceylonicus Jord., 1895, more extended and less definite than in

M. hopkinsi.

Segment 2 of antenna as long as 3rd, 4th, and 5th together, the segments of

the club almost equal in length (‘Text-fig. 10), all longer than broad, 11th elliptical,

10;

Trext-Fie. 9.—Melanopsacus dulcis, Text-rie. 10.—Melanopsacus dulcis,

basal angle of pronotum, left side. club of antenna.

more than twice as long as broad. Reticulation of pronotum more prominent

than in M. hopkinsi, basal angle much shorter. Basal line of punctures of

elytrum posteriorly joming the sutural line.

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

Upolu: Vailima, 1.1925, one 9, type; Malololelei, 2000 ft., vi.1924, one 9.

12. Melanopsacus janus, sp. n. (‘Text-fig. 11).

Differs from M. dulcis particularly in its antennae. Pitchy black, legs

and base of antenna dark rufous, markings almost

as in M. dulcis, but more silky grey, less golden.

Reticulation of pronotum more prominent, basal

angle shorter. Rows of punctures of elytra some-

what deeper. Metasternum and abdomen also

Text-Fie. 11.—Melanopsacus re deep Ay, punctate.

janus, club of antenna. Segment 2 of antenna somewhat swollen,

shorter than 3rd, 4th, and 5th together, club

short, 9th and 11th a little longer than broad, 10th broader than long, both

9th and 10th rather strongly asymmetrical. Apex of fore tibia of g widened

ANTHRIBIDAE. 171

on inner side, middle and hind tibiae with sharp spiniform apical mucro.

Pygidium of ¢ broad, slightly narrowing apicad, apical margin subtruncate,

appearing incrassate when viewed from the anal side.

Length: 1-6 mm.

Three immature 99 evidently belong to the same species. They differ

from the 3 in the angle of the pronotum bemg more produced.

Upolu: Malololelei, vu.1924, one 3, type; vi.1924, 2000 ft., two 99;

Vailima, 1.1925, one Q.

13. Melanopsacus glenis, sp. n.

Pitchy black, glossy, especially on the elytra, the pubescence consisting of

dispersed hairs which are not concentrated into spots.

A little less than twice as long as broad (7:4). Sides of prothorax and

elytra somewhat rounded, the insect appearing slightly constricted at the base

of the prothorax. Antenna nearly as in Text-fig. 11. Pronotum densely

reticulate, but the meshes smaller than in the previous species, and the inter-

spaces a little wider; basal angle very little produced downwards. ‘The serial

punctures of the elytra deep, the interstices without granules. Pygidium

almost twice as broad as long, nearly evenly rounded and smooth, margins not

distinctly elevated. Impunctate space of prosternum below carina small.

On abdominal segment 1 a basal row of punctures, on 2nd and 3rd a subbasal

and a subapical row.

Length: 1:6 mm.

Upolu: Malololelei, vii.1924, one 9.

14. Scirtetinus pacificus, sp. n.

The only specimen obtained of this genus differs a little, particularly in

the antenna, from the various species of Scirtetenus, Jord., 1914, discovered by

Dr. Hugh Scott in the Seychelles, and may ultimately need to be transferred to a

new genus. But I prefer to emphasise the relationship rather than the difference.

Glossy, as in Scirtetinus, carina of pronotum a very short distance from the

base, its angle slightly obtuse, lateral carina extending to near middle.

Twice as long as broad ; piceous, tibiae, tarsi and base of antenna rufous ;

pubescence very sparse. Segment 2 of antenna half the length of 1, elongate-

conical, a little longer than 3rd and 4th together and very much thicker, 3rd to

172 INSECTS OF SAMOA.:

8th imperceptibly decreasing in length, becoming gradually a little broader,

with the sides more convex ; club broad, as long as 4th to 8th together; 9th

triangular, very slightly longer than broad, 10th broader than long, longer on

posterior side than on anterior, 11th a little longer than broad, strongly rounded

at apex and sides, slightly broader than 9th and 10th, hairs of club and preceding

segments stiff and rather long, about as long as the segments.

Pronotum practically as long as broad, slightly rounded at the sides,

minutely coriaceous, uniformly covered with dispersed large punctures, not

reticulate. Elytra smooth, without stripes, apart from the sutural one, the

stripes indicated by somewhat irregular rows of minute punctures, which are

larger in anterior half of side. Pygidium nearly one-half broader than long,

evenly rounded.

Length: 1:3 mm.; breadth 0-7 mm.

Upolu: Malololelei, 22.x1.1924, one .

LIST OF TEXT-FIGURES.

1. Notiana buaton, proboscis, head.

2. Proscopus veitchi, head.

3 ke ,, head and pronotum.

4. Araecerus eudelus, lateral aspect of pronotum.

5. Deropygus fornix, pygidium.

x 6. re, ,, lateral aspect of posterior segments.

7. Stenorhis ampedus, head.

8. Melanopsacus hopkins, lateral aspect of pronotum.

9 RS dulcis, basal angle of pronotum.

0) if ,, ¢lub of antenna.

1 53 janus, club of antenna.

PROTERHINIDAE

By R. C. L. Perkins, D.Sc., F.R.S.

So far as at present known, the species of this family are almost confined to the

Hawaiian group. In that group there has been a very rich development of

species, more than a hundred having been found, even supposing that a con-

siderable number of those described by myself prove to be only varieties of

others.

1. Proterhinus samoae, Perkins.

Proc. Hawaiian Ent. Soc., Vol. i, p. 87, 1907.

In 1902 a species was obtained in Honolulu from some coconuts, imported

from Samoa for planting, and was subsequently described as P. samoae Perkins.

Since the coconuts were taken straight from the steamer to a closed room in

order that they might be examined and treated with insecticides, there was no

question as to whether the insect had really come from Samoa. At first it

seemed possible, however, that this isolated species might itself have been

imported by man from Hawaii to Samoa, but this appeared unlikely when the

insect was examined, since, though it possesses no very striking characters, it

is not closely allied to any known Hawaiian form. So far as I am aware, no

Proterhinus has been found on coconuts in the Hawaiian islands, though even

had one formerly existed, it would probably have been exterminated by intro-

duced predators before Blackburn began his collecting there some fifty years

ago.

In November 1924, Messrs. Buxton and Hopkins collected P. samoae at

Apia, but only one entire and one fragmentary example have been sent to me.

The former is a 3, and agrees perfectly with the type specimen, with which I

have compared it. The damaged (headless) specimen is larger, and is probably

a female. Since the rostral characters are frequently of great importance in

173

174 INSECTS OF SAMOA. —

determining the affinities of these very difficult species, the acquisition of a

perfect specimen of this sex is very desirable.

In March 1924, Mr. E. H. Bryan, Jun., visited Enderbury Is. in the

Phoenix Group, which lies almost directly between Hawai and Samoa, though

distant from the latter by considerably less than one-third of the distance

between these groups. Here he discovered a very remarkable new form of

PROTERHINIDAE, which, in spite of the diversity exhibited by the Hawaiian series,

can hardly be referred to the genus Proterhius itself.

PRINTED IN GREAT BRITAIN BY WILLIAM CLOWES AND SONS, LTD., LONDON AND BECOLES.

INSECTS OF SAMOA

AND OTHER SAMOAN TERRESTRIAL

ARTHROPODA

PROPOSED ARRANGEMENT :—

Part |. Orthoptera and Dermaptera.

» Il. Hemiptera.

» III. Lepidoptera.

» IV. Coleoptera.

» V. Hymenoptera.

» VI. Diptera.

» WII. Other Orders of Insects.

», VIII. Terrestrial Arthropoda other than Insects.

The work will be published at intervals in the form of numbered fascicles.

Although individual fascicles may contain contributions by more than one

author, each fascicle will be so arranged as to form an integral portion of one or

_ other of the Parts specified above.

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