中国陕西铜川中三叠世新直脉蝎蛉科一新属一新种(昆虫纲,长翅目)

A NEW MIDDLE TRIASSIC GENUS AND SPECIES OF NEORTHOPHLEBIIDAE (INSECTA, MECOPTERA) FROM TONGCHUAN REGION, SHAANXI PROVINCE, CHINA

记述新直脉蝎蛉科1新属1新种Neorthophlebopsisqishuiheensisgen.etsp.nov.,并以其Sc很长,Rs与M分支同一水平,Rs1+2分支在Pt之前,M与CuA汇合,臀区3支粗壮横脉,呈一字斜形排列等特征与已知属相区别。新属种系铜川昆虫组合的新成员,属陕西昆虫群。化石标本采自陕西铜川中三叠统铜川组下段上部灰绿色泥页岩。铜川组的时代相当欧洲拉丁尼期(LadinianStage)。

A new genus and species, Neorthophlebopsis qishuiheensis sp. nov. is described, The genus differs from other genera of Neorthophlebiidae in Sc very long, Rs and M forked at same level, Rs1 ＋2 forked before Pt, M coalesced directly with CuA, 3 thick and waved anal crossveins, arranging in a oblique line. The new genus and species referred to new member of Tongchuan Entomassemblage of Shaanxi Entomofauna. The fossil specimens were collected from the grayish-green mudstone and shale of Upper part of Lower Member, Middle Triassic Tongchuan Formation （Tr2t） of Tongchuan Region, Shaanxi Province. Tongchuan Formation corresponds to European Ladinian stage in age （Hong, 1989）.