A new species of Macrophya Dahlbom(Hymenoptera:Tenthredinidae) with a key to species of Macrophya planata group

中国钩瓣叶蜂属一新种及M. planata种团种类检索表(膜翅目:叶蜂科)(英文)

The Macrophya planata species group is proposed and defined by mesoscutellum very fiat with sharp lateral carina and the dorsal side of some antennomeres white. A new species of the group from Tibet, China is described： Macrophya acutiscutellaris Wei, Li ＆ Heng sp. nov.. The new species is similar to M. pseudoplanata Saini et al., 1996, but differs from the latter in body length 13.5 mm in female; apical third of hind tibia entirely black; antenna 2.5 times as long as head breadth; postoeellar area 1.6 times as broad as long; harpe weakly narrowed toward apex. A key to all known species of Macrophya planata group is provided. Type specimens of this new species are deposited in the Insect Collection of Central South University of Forestry and Technology, Changsha, Hunan, China.

记述采自中国西藏的钩瓣叶蜂属 Macrophya Dahlbom 1新种:尖盾钩瓣叶蜂Macrophya acutiscutellaris Wei, Li & Heng sp. nov.。简要讨论了M. planata 种团的特征,编制了M. planata 种团已知种类分种检索表。该新种与在中国墨脱和印度那加兰邦地区分布的拟平盾钩瓣叶蜂M. pseudoplanata Saini et al., 1996最近似,但新种的雌虫体长13.5 mm,后足胫节端部1/3完全黑色,触角2.5倍长于头宽,单眼后区宽长比为1.6,雄虫抱器向顶部弱度变窄等,与后者不同。新种模式标本保存于中南林业科技大学昆虫模式标本室。