Genus Stromatium Serville

Stromatium Serville, 1834, Ann. Soc. Ent. Fr., 3 : 80 (type-species : Callidium barbatum Fabricius, 1775) loc. cit. - Pascoe, 1869, Trans. Ent. Soc. Lond., ser 3, 3 : 531. - Gahan, 1906b, Fauna British India, Col. 1: 114. - Aurivillius, 1912, Coleopt. Cat., 39 : 72. - Gressitt, 1940, Philip. J. Sci., 72 (1-2) 49.; 1951c, Longicornia 2 : 150. - Gressitt & Rondon, 1970, Pac. Ins. Monogr., 24: 52.

Diagnostic characters : frons vertical; head raised between antennal insertion, convex, acutely pointed at both ends; clypeus depressed; upper eye lobe distanct; gena short; antennae longer than body in , ciliated ventrally; prothorax transverse, side concave, rounded; side of prothorax of with a large tomentose depression; elytra rounded at apex; fore femora fusiform, strongly dilated at middle; fore acetabula little angulated; fore coxal cavity opened posteriorly.

Stromatium longicorne (NEWMAN)

Stromatium longicorne: Gahan, 1906b, Fauna British India, Col. 1 : 115. - Aurivillius, 1912, Coleopt. Cat., 39 : 73. - Gressitt, 1940, Philip. J. Sci., 72 (1-2) : 92.; 1950, Philip. J. Sci., 72 (2) 207.; 1951a, Ann. Ent. Soc. Amer., 44 (1) :8.; 1951c, Longicornia 2 :150.; 1956, Ins. Micronesia, 17 (2) : 74, fig. 3a.; 1959, Pac. Ins., 1 (1) : 92. - Samuelson & Gressitt, 1965, Pac. Ins., 7 (1) : 64. - Duffy, 1968, Imm. Stages. Or. T. Beetles, 126. - Gressitt & Rondon, 1970, Pac. Ins. Monogr., 24 : 53, - Hudepohl, 1990b, Entomofauna, 11 (3/2) : 86, fig. 30.Diagnostic characters : large tomentose depression at latero-ventral of prothorax; setaceous granule on elytra; pronotum with 4 obstuse tubercles and a submedian callosity.

Body dark brown with greyish pubescence; entire tibiae fusco-castaneous; femora with slight reddish tinge; tomentum on lateral depression side of prothorax tawny.

Head with a shallow median groove on vertex; mandible short, notched at latero-posterior of base; labrum transverse; frons somewhat roughen, transversely elevated in front, behind it a elongated diamond-shaped depression which is bare; posterior of frons clothed with dense decumbent pubescent; inner antennifer acutely pointed posteriorly. Antenna 2 X as long as body in ; fringed ventrally; scape widen towards apex, punctate, canaliculate near base in ; second segment 1/3 as long as scape; 3 longest, 2.5 X as long as scape; 4 -10 subequal. Prothorax broader than long; dilated laterally, side rounded; widest at middle, as wide as elytra; disc coarsely punctate; pronotum with 4 obstuse tubercles and a median callosity a little behind center; latero-ventral with large triangular tomentose depression; prosternum raised at miffle and transversely striate. Scutellum semicircular, medianly depressed at apex. Elytron 4.5 X as long as broad; disc raised above humeral angle; heavily granulate, denser near suteral half, each granule setiferous; area between granules and marginal half punctate; beside the setae, surface evenly pubescent. Legs : femora fusiform, semicompressed; fore femora strongly dilated at middle; tibiae strongly compressed; apical half gradually widen.

Measurement : Length 28 mm (); breadth 8 mm ()

Distribution : Assam; Northern Myanmar; South China; Thailand; Peninsula Malaysia; Celebes; Ceram; Amboina; Bitchian; Sarawak; Philippines; Taiwan; Ryukyu, Indonesia; New Guinea; Singapore; Hong Kong; Hainan Island; Loas; East Paskitan

Host : Tectona grandis (Gressitt, 1951c); Shorea sp., Cupressus sp. and Anogeissus acuminata (Duffy, 1968); Irvingia harmandiana (Gressitt & Rondon,1970)

Material examined : 1 Kuching, Kuching Div., 17.X.1902 (SM Coll.).