Head elongated behind eye, horizontal; mandible falciform, dorsal carinate, external margin feebly emarginate before molar; labrum and clypeus sunken; frons oblique, anterior margin elevated, middle depressed with a crescentric sulcus behind; gena short, 1/3 as deep as eye, lower margin protrude latero­anterior; gula hollow out in front, concave; a median sclcus between antennal insertion that extenuate posteriorly into a median glabrous stripe alone vertex and neck; antennifer raised, inner boarder dilated, almost contiguous medianly; eye divided; temple porcate, less distinctive in ; neck granulate to granulo­striate. Antenna 1.5 X longer in , shorter or at most slightly longer in ; dorsal entirely bare or at most sparsely pubescent in both sexes; ventrally fringed on segment 3 - 8 in , scape twice the diameter of following segment, coarsely punctate and asperate in , only punctate in ; 3 incurved, 2.5 X as long as scape or same length as 4 + 5 combined; 4 slightly shorter than 5, as long as scape; 6 - 11 deplanate; 6 - 10 dentate ectoapically in . Prothorax constricted at apex and base; the former much narrower than the later; the widest part at 1/3 from base, as wide as elytra; anterior of lateral side with a protuberance, posterior with congregated chalaza; disc transversely but irregularly wrinkled; pronotum generally with a median raised pubescent , surface, flanked by longitudinal glabrous impression or goffered, either broad­squarish, intricate or hatched; side of middle with longitudinal flexous ridges; prosternum transversely plicate. Elytron 5 X as long as broad; parallel at basal half, gradually narrow towards apex, roundly truncate with a sutural spine and produced angular tooth; side not much deflexed, overhanging over abdomen; disc with two obscure costiform line dividing elytron into 3 parts, densely pubescent and evenly punctate. Legs strongly compressed; fore femora wider at base and middle, gradually narrower towards apex; middle and hind femora subfusiform, ventral margin linear; fore and middle femora of rugulose; dorsal apical half of all femora in planate with two carinae at side, rounded in ; fore tibiae curved.

Measurement : Length 16.5 - 42.5 mm (); 21.2 - 40.0 mm ()
Breadth 3.3 - 10.1 mm (); 4.8 - 10.0 mm ()

Distribution : India; East Pakistan; Assam; Myanmar; Thailand; Peninsular Malaysia; Laos; Sarawak

Known habitat : secondary riverine forest, facing primary forest on higher hill slope; near village; old secondary peat swamp forest, found under Meranti logs.

Host : Hopea, Millettia, Parashorea, Pentacme, Shorea; Dipterocarpus (Gressitt & Rondon, 1970).

Material examined : 26 , [171 & 184] Rinki camp, Sungai Seping, Kapit Div., 19.II.1995 & 20.II.1995, C. K. Lim (UNIMAS Coll); [284 & 345] Sampling Log Pond, Tubau, Bintulu Div., 1.IV.1995 & 13.IV.1995, C. L. Voon (UNIMAS Coll.); [370] Sampling Log Pond, Tubau, Bintulu Div., 28.II.1995, C. L. Voon (UNIMAS Coll.); [515] Sedilo forest Reserve, Simunjan, Samarahan Div., 1.XI.1995, C. K. Lim & Wahap Marni (UNIMAS Coll.); Matang road, Kuching Div., 5.XII.1915 (SM Coll.); Kuching , Kuching Div. III.1900 (SM Coll.); Kuching , Kuching Div. 30.IX.1914 (SM Coll.); Kuching , Kuching Div. 16.XII.1899 (SM Coll.); Baram, Miri Div., 14.X.1910 (SM Coll.); Kuching, Kuching Div. I.1899 (SM Coll.); [FN 00953] Similajau F. R., Bintulu Div., 9.VIII.1978, A. A. Hamid, (For. Dept. Coll.); [FN79-0229] Sawai P. F., Bintulu Div., 28.VII.1979, Mercer & Yeo (For. Dept. Coll.); [FN 00949] Similajau, Bintulu Div., 9.VIII.1978, A. A. Hamid (For. Dept. Coll.); [FN 80-0244] Teraja Camp, Sg. Bilat, Baram, Miri Div., 29.III.1980, Mercer & Suhaili (For. Dept. Coll.); [FN 80-18561 Semenggoh, Kuching Div., 24.XI.1986, Mercer & Lippa (For. Dept. Coll.); [FN 82-0281] G. Serapi, Matang, Kuching Div., 20.V.1982, Ento team (For. Dept. Coll.); [Fn 78-0110] Retus P. F., Sibu Div., 27.VI.1979, Ento team (For. Dept. Coll.); [FN 80­0289] Sg. Bilat, Baram, Miri Div., 30.III.1980, Mercer & Suhaili (For. Dept. Coll.); [FN 00931] Similajau, Bintulu Div., 9.VIII.1978, A. A. Hamid (For. Dept. Coll.); [FN 79-0125] Retus P. F., Bintulu Div., 27.VI.1979, Ento team (For. Dept. Coll.); [A.S. 81-109] Hua Seng S. M., Sibu Div., 18.IV.1981, Alex. & Hidir (For. Dept. Coll.); [FN 00959] Similajau, Bintulu Div., 8.VIII.1878, A. A. Hamid (For. Dept. Coll.); [FN 80-0274] Sg. Bilat, Baram, Miri Div., 29.III.1980, Mercer & Suhaili (For. Dept. Coll.); [FN 81-0034] Semenggoh F. R., Kuching Div., 2.II.1981, Mercer & Lippa (For. Dept. Coll.); 20 , [035] Bahau Forest Reserve, Kapit Div., 28.XI.1994, Wahap Marni (UNIMAS Coll.); [150] Sampling Log Pond, Tubau, Bintulu Div., 18.II.1995, C. K. Lim (UNIMAS Coll.); [172 & 181] Rinki camp, Sungai Seping, Kapit Div., 19.II.1995 & 20.II.1995, C. K. Lim (UNIMAS Coll); [268, 287, 310 & 346] Sampling Ug Pond, Tubau, Bintulu Div., 20.II.1995 & 1.IV.1995 - 13.IV.1995, C. L. Voon (UNIMAS Coll.); [428] Kampung Teh, Mukah, Sibu Div., 26.V.1995, Meekiong Kalu (UNIMAS Coll.); [514] Sedilo forest Reserve, Simunjan, Samarahan Div., 3.XI.1995, C. K. Lim & Wahap Marni (UNIMAS Coll.); [B5] UPM campus, Bintulu town, Bintulu div., date and collector unknown (UNIMAS Coll.); [B9] UPM campus, Bintulu town, Bintulu Div., 23.II.1992, student (UNIMAS Coll.); Baram, Miri Div., 18.X.1910 (SM Coll.); Matang road, Kuching Div., 13.XI. 1909 (SM Coll.); Sadong, Samarahan Div., VIII.1903 (SM Coll.); [FN 80-0244] Teraja Camp, Baram., Miri Div., 26.III.1980, Mercer & Suhaili (For. Dept. Coll.); [FN 79-0088] Retus P. F., Sibu Div., 28.VI.1979, Ento team (For. Dept. Coll.); [FN 80-1631] K. T. S. SM., Simunjan, Samarahan Div., 2.X.1980, Mercer, Lippa & Rahman (For. Dept. Coll.); [FN 79-0604] G. Serapi, Matang, Kuching Div., 26.IX.1979, Mercer & Yeo (For. Dept. Coll.); [FN 81-0085] Semenggoh, Kuching Div., 2.II.1981, Mercer & Lippa (For. Dept. Coll.).

Dialeges egenus PASCOE

Body fuscous to pitchy with fulvo-argentate pubescence; head, prothorax, entire antennae and undersurfaces fuscous, usually with a reddish tinge; elytra reddish fuscous, pubescence fulvo-argentate, glistening slivery and dull fuscous patterns together with darker dwi-oblong patches less distinvtive; metasternum with luteous pile; legs brownish castaneous.

Head horizontal; dorsal of mandible not strongly carinate but deeply notched at postero-ventral of base; frons oblique, suture with clypeus obscure, flat with a shallow A-shaped fissure behind; gula concave, depression semicircular and pilose; antennal insertion widely separated; frons, antennifer and vertex very pubescent; the later planate; neck elongated, with two obscure protuberance side of median; temple and ventral of neck transversely rugose, parallel. Antenna 1.5 X as long as body in , shorter than body in ; not fringed ventrally except on segment 7 & 8 of ; scape asperate and reticulo-punctate in , only punctate in ; segment 3 twice as long as scape in both sexes, shorter than 4 + 5 combined; 3 - 5 or 3 - 6 aspersus and slightly asperate in ; 3 - 11 complanate. Prothorax  longer than broad in , shorter in ; constricted at both ends, much narrower at apex; disc rugose, strongly impressed at middle; side of median with longitudinal glabrous impression or goffered, usually broad­squarish and slightly hatched; two longitudinal flexous ridges side of median. Elytron 5.5 X as long as broad; parallel at base and narrow at apex; transversely truncate with a sutural spine and weak angular tooth. Undersurfaces : metasternum including epipleura of metathorax extremely pilose. Legs : all femora punctulate and densely pubescent; hind femora extended beyond elytral apex in .

Measurement : Length 24.0 - 27.3 mm (); 23.3 - 30.0 mm ()
Breadth 5.2 - 6.2 mm (); 4.9 - 6.8 mm ()