摘要
记述了采自云南的沟胫天牛亚科３新种：齿尾毡天牛Ｔｈｙｌａｃｔｕｓｄｅｎｔｉｐｅｎｎｉｓ、黑斑灰天牛Ｂｌｅｐｅｐｈａｅｕｓｎｉｇｒｏｓｔｉｇｍａ和云南刺锦天牛Ｓｔｅｒｎｏｈａｍｍｕｓｙｕｎｎａｎａ。其中，刺锦天牛属ＳｔｅｒｎｏｈａｍｍｕｓＢｒｅｕｎｉｎｇ为我国首次记载。新种模式标本保存于西南农业大学昆虫标本馆。
This paper deals with three new species of Lamiine beetles from Yunnan, China. They are: Thylactus dentipennis, Blepephaeus nigrostigma , and Sternohammus yunnana . The genus Sternohammus Breuning is recorded for the first time from China. All the type specimens are deposited in Insect Collection, Southwest Agricultural University. 1 Thylactus dentipennis sp nov (Figs 1-4) Body small in size, blackish brown; antennae as long as body, light yellow, except blackish brown on scape and the apex of 3 to 8 segments: head and prothorax densely covered with blackish brown pubescence and mixed with light yellow as follows: a Y shaped in middle of frons, a transverse line between antennal tubercles, and a narrow vitta in middle of pronotal disc; elytra entirely clothed with thick streaks of pale yellow pubescence, partly blackish brown, subregularly punctured between streaks, emarginated and fringed apically. Male genitalia (Figs 2-4): median lobe with median struts strongly curved, the former being longer than the latter, and distinctly longer than tegmen; the ventral margin of median orifice rounded; tegmen without roof and basal piece; lateral lobes short, densely furnished with long soft setae apically; ringed parts hemmed, converging. Internal sac slender; ejaculatory duct single. Length: 16 5 mm; breadth: 4 5 mm. Holotype,♂,Fengqing shili, Yunnan, 1 800 m, 8-Ⅶ-1980, by Zhang Fu. 2 Blepephaeus nigrostigma sp nov.(Figs 5-8) Medium sized, elongate, reddish brown, darker on scape and the apex of 3rd and following antennal segments; head, prothorax, ventral surfaces and legs clothed with testaceous or golden yellow pubescence. Elytra reddish brown, covered with fine pale yellow pubescence, each with a long postmedian arc vitta, pale white, which divided elytron into two dark brown portions; elytral surfaces irregularly scattered with round velvety black spots except the long arc vittae. Male genitalia (Figs 6-8): median lobe with median struts moderately curved; the ventral margin of median orifice rounded, superior lobe blunt and shorter than inferior one. Roof absent, basal piece present; lateral lobes broad in base, narrowed apically and covered with setae at the apical portion; ringed parts wide, geniculated at the widest portion and slightly hemmed. Internal sac constricted at the apex; ejaculatory duct double. Length: 18 5-22 mm; breadth: 6-7 5 mm. Holotype:♂,Yangbi shaojian, Yunnan, 2200 m, 20-Ⅷ-1980, paratype 2♀♀:1♀, Yuanyang nansha, Yunnan, 1000 m, 2-Ⅴ-1979, by Zhang Zhonggui; 1♀, Fengqing ludang, Yunnan, 2200 m, 31-Ⅶ-1980, by Zhang Fu. 3 Sternohammus yunnana sp nov.(Fig 9) Body dark chestnut brown, covered with fine pale pubescence; antennae three times as long as body, elytral surfaces clothed with fine grayish green pubescence. Head with frons deeper than broad, convex, grooved medially; eyes coarsely facetted, lower lobes slightly deeper than wide and than remainder of genae; scape with cicatrix open, clavate. Prothorax spined laterally; scutellum trancated apically. Elytra finely punctured regularly, and narrowed apically, spinously. Mesosternal process convex and higher than coxae, vertically truncated anteriorly; femora strongly clavate; middle tibiae grooved externally. Length: 14 mm; breadth: 4 5 mm. Holotype: ♀, Jinghong fule, Yunnan, 672 mm, 21-Ⅵ-1980, by Long Deng.
关键词
天牛科
毡天牛属
灰天牛属
刺锦天牛属
新种
Cerambycidae, Thylactus, Blepephaeus, Sternohammus, New species
