Genus Nothopeus Pascoe

Colobus Serville (nec Illiger), 1833, Ann. Soc. Ent. Fr., 2 : 554 (type-species Stenocorus hemipterus Fabr. = Cerambyx hemipterus Oliv.) loc. cit.

Nothopeus Pascoe, 1864, J. Ent., 2 : 287 (loc. cit.). - Gahan, 1906b, Fauna British India, Col., 1 : 202. - Gressitt & Rondon, 1970, Pac. Ins. Monogr., 24 : 137.

Coloborhombus Thomson, 1865, Syst. Ceramb., 486 (loc. cit.). - Aurivillius, 1912, Coleopt. Cat., 39 : 298.

Diagnosis : head acutely raised between antennal insertion, strongly concave side to side; inner margin of antennifer carinate or sharply tuberculate; clypeus prolonged beyond base of mandible; margin of frons deeply emarginate with the eye approximate; antennae as long as body in , shorter in ; antennae stout, segment 3 - 10 sharply angulate ectoapically, 3 longest, remaining successively shorten; prothorax hexagonal with sharp lateral tubercle, narrow posteriorly, base constricted and transversely depressed; elytra abbreviated or if normal, it is strongly dehiscent and narrowly attenuated toweards apex. in any case, second pair of wing partly exposed; fore coxae raised; fore intercoxal process narrow at middle, not tuberculate.

Key to species of Nothopeus in Sarawak

1.    Elytra long, reaching apex of abdomen ……………………........………...2
Elytra short, abbreviated, apex not extended to middle of first abdominal segment - hemipterus (OLIVIER, 1795)

2(l)  Body entirely brownish testaceous, including entire antennae, elytra and legs; scutellum ochraceous; elytron moderately narrow; mandible feebly oblique with frons; inner margin of antennifer tuberculate . - fasciatipennis (WATERHOUSE, 1885)
Body blackish; antennae black, apical segment tinge with fuscous; elytra black near base, fusco-ochraceous at apical half, legs entirely black; scutellum black; elytra acutely narrow; mandible and frons same plane, subvertical; inner margin of antennifer carinate . - intermedius (GAHAN, 1902)

Nothopeus hemipterus (OLIVIER) 

Cerambyx hemipterus Olivier, 1795, Ent., 4 (67) : 127, pl. 23, fig. 181 (loc. cit),

Stenocorus hemipterus Fabricius, 1901, Syst. Eleuth., 2 : 310 (loc. cit.)

Colobus hemipterus : Surville, 1833, Ann. Soc. Ent. France, 2 : 555 (loc. cit)

Coloborhombus hemipterus : Thomson, 1864, Syst. Ceramb., 486 (loc. cit.). - Gressitt, 1951c, Longicornia, 2 : 190. - Aurivillius, 1912, Coleopt. Cat., 39 : 298.

Nothopeus hemipterus : Gahan, 1906b, Fauna British India, Col. 1 : 203, fig. 78. - Duffy, 1968, Imm. Stages. Or. T. Beetles, 182. - Gressitt & Rondon, 1970, Pac. Ins. Monogr, 24 : 138.

Body dark, black; heand and antennae black, the latter with blackish tomentum; anterior of clypeus castaneous; frons tinge with ferrugineous; antennal condyle castaneous; prothorax black with dense, velvety fuscous tomentum; scutellum and elytron black except apex of latter that is brownish; undersurfaces black-chalybeate with fuscous pubescence; posterior of abdominal segment with a slivery lustre; legs including coxae black, femore and tibiae with dense fuscous pubescence,

Head exserted and compressed below eye; mandible ridged medianly, gradually curved at apex, punctulate; labrum punctate, sparsely with long bristles; aclypeus narrow, corneus; clypeus contigeous with frons; the latter prolonged into base of mandible, glabrous, glossy; frons subglabrous, punctures concentrate at side, lateral margin deeply emarginate; anterior of genae feebly incirsed; acutely raised between antennal insertion, closely punctate and tomentose; deeply groove medianly but it extenuate at middle of frons; inner margin of antennifer tuberculate; gula concave, anterior half glabrous, coarsely punctate. Antenna as long as body in ; scape gradually widen towards apex, punctulate and piliferous; 3 - 9 (10 - 11 missing) angulate ectoapically, feebly tricarinate (lateral, dorsal & ventral) but being more conspicuous in 3 - 5; 3 long, 3 X as long as scape; successive segments gradually shorten. Prothorax hexagonal; side conically tuberculate; widest at side tubercle; apex as wide as base; narrowed posterior of tubercle, anterior of it slightly convex; transversely depressed at base; entirely tomentose, velvety-liked; intercoxal process narrow at middle; posterior dilation inverted cordiform. Scutellum oblong, apex truncate. Elytron short, not reaching half of first abdominal segment; hurneral angle rounded; deflexion narrowed and extenuate to apex; disc approximate for basal half, dehiscent behind middle, triangular; tomentose, denser near to base. Legs : fore coxae subglobular, strongly raised; fore femora sinuate; mid femora fusiform; hind femora disproportionately long, compressed, widest at middle, tapering to both ends; fore and mid tibiae subcylindrical, the former feebly incurved; hind tibiae strongly compressed, inner margin gradually widen to 1/3 from base, remaining 2/3 parallel.

Measurement : Length 30.0 mm (), elytron 7.0 mm ; breadth 6.0 mm ()

Distribution : Sarawak; Northern India; Myanmar; Java; Thailand; Taiwan;       Sumatra.

Host : Eugenia, Psidiom, Lagerstroemia, Tristania (Gressitt & Rondon, 1970)

Note : Hudepohl (1987) described another new species, Scalenus ysmaeli and placed Nothopeus Pascoe, 1864 as junior synonym of Scalenus Gistel, 1848. However, the former was retained in this study as the original description and types of Scalenus were not available.

Material examined : single specimen examined in Sarawak Museum bearing 2 labels, (i) Coloborhombus sp. nr. hemipterus (Fab), named in Brit. Mus. by C. J. Gahan & E. B. Poulton, Nov.14.1900, (ii) N. W. Borneo, 3600 feet, Mt. Matang, near Kuching, Sarawak, Capt. by Dyak coll., Jun.00 & Pres. 1900 by R. Shelford, B.A.In latter years, Gahan (1906) synonymed Coloborhombus under Nothopeus Pascoe with the type-species N. hemipterus. The specimen examined fit the description of given.

Nothopeus fasciatipennis (WATERHOUSE)

Body ochraceous; mandible glossy ochraceous; molar and eyes black, remaining area of head ochraceous with testaceous tomentum; antennae ochraceous; prothorax blackish fuscous at side and ventral part; pronotum ochraceous, very densely clothed with golden-testaceous tomentum, velvet-liked; scutellum and elytra ochraceous; the latter with brownish-testaceous, denser near base; mesosternum fuscous at side, ochraceous at ventral; metathorax fuscous except of metasternum clothed with hairy long tawny bristles; first abdominal segment ochraceous except latero-posterior side that is fuscous, remaining segments fuscous; coxae, femora, tibiae and tarsus entirely ochraceous.

Head strongly raised between antennal inertion; acutely concave side to side; mandible elongated, bent at tip; molar bidentate; aclypeus wide, transverse, corneous; frons vertical; clypeus oblique, more distinctive if view from side; lateral margin of frons deeply emarginate, beyond antennal support; sulcus between genal margin and clypeus distinctive; gula planate. Antenna shorter than body in , extended to half of elytron; scape feebly dentate ectoapically, sparsely punctulate; 3 twice as long as 4; ectoapical angulation on 3 & 4 abscure. 5 - 10 cylindrical, angulate ectoapically, successively shorten. Prothorax narrower than elytra at base; width at base subequal to apex; side strongly and pointly tuberculate; base of tubercle wide; lateral margin between tubercle and base oblique for half of its length, straight or parallel for the other half that formed a transverse depression; anterior margin angulate, somewhat transversely depressed at apex; pronotum planate medianly, extreme side dilated with 2 blunt obscure protuberance. Scutellum triangular, side straight. Elytron elongated, 6 X as long as broad as compared to widest part at base; approximate at suture for 1/6 from base, strongly dehiscent behind; lateral marginal edge sinuate, narrowest at 1/3 or 1/4 from apex; the latter broadly rounded; deflexion for only half of metathorax, remaining planate; humeral angle produced; disc subglabrous and subpubescent with 3 costate; the sutural meeting the median one at 3/4 from base, with the marginal one joining it and terminate at 1/6 from apex. Abdomen not as deep as metathorax. Legs : hairy pilose on fore and mid trochanter; femora punctulate and moderately pubescent; hind femur not reaching elytral apex; first hind tarsal segment as long as remaining united.

Measurement : Length 32.0 mm (); breadth 8.0 mm ()

Distribution : Sarawak; Celebes; Sumatra 

Host : Eugenia aromatica (Duffy, 1968) Material examined: 1 Penrissen, Kuching Div., V. 1897 (SM Coll.)

Nothopeus intermedius (GAHAN)

Body blackish fuscous; head, antennae, prothorax, scutellum, undersurfaces and legs black; labrum, anterior of clypeus and antennal condyle testaceous; head and prothorax with blackish fuscous tomemtum, velvety on prothorax; elytra fusco-ochraceous, blackish at basal half, base with blackish to fuscous tomentum; lateral deflexion and the rest evenly clothed with brownish-ferrugenous pubescence; undersurfaces with dense brazen-fuscous; pubescence velutinous; latero-posterior of hind coxae with slivery lustre; abdomen fuscous, less pubescent.

Head subvertical; anterior of clypeus thicken, sinuate, posterior half trapezoid-shaped; antennifer distinctive raised, edge semicircular; highly raised between antennal insertion, angularly inclinate; inner margin of antennifer sharply carinate. Antenna shorter than body, extended to 1/3 from apex; scape with a sharp ectoapical spine; 3 - 10 sharply angulate ectoapically; 4 - 9 with distinctive lateral carina and somewhat 4-sided. Scutellum triangular, base wide, apex acutely attenuate, side incurved. Elytron very much elongated, 7 X as long as the broadest part at base; deflexed over entire length of metathorax, posterior tapering; sutural margin strongly dehiscent, excurved; external margin gradually narrow to middle, strongly incurved and narrowly rounded at apex; disc minutely pubescence with 3 costate; sutural and median one converge at middle, extended apically and decussate with the submarginal costate at 1/3 from apex. Abdomen half as deep as metathorax. Prothorax and Legs very similar to previous

Measurement : Length 30.0 mm (); breadth 7.0 mm ()
Distribution : Sarawak
Material examined : 1 Matang Road, Kuching Div., 20.III.1912 SM Coll.).