内蒙古自治区中侏罗世表翼蛉化石一新种(脉翅目:翼蛉科)

A NEW MIDDLE JURASSIC OF EPIOSMYLUS FROMINNER MONGOLIA,CHINA(NEUROPTERA: OSMYLIDAE)

描述表翼蛉属化石 1新种 ,潘氏表翼蛉Epiosmyluspanfilovisp .nov . ,讨论了表翼蛉属的科级分类问题。标本采自内蒙古自治区宁城县山头乡中侏罗世地层中。

Epiosmylus panfilovi sp. nov. (Figs. 1 4) Material. Holotype No.NN99011,collection of Department of Biology, Capital Normal University, Beijing. Forewing 13 5?mm long, 3 7?mm wide; hindwing 13 1?mm long, 3?mm wide. Type locality. Daohugou Village, Shantou Township, Ningcheng County, (41 6°N,119 3°E),Inner Mongolia, China. Type strata. Jiulongshan Formation, Middle Jurassic (Bojocian). Etymology. The specific name is dedicated to the Russian Entomologist Dr. D. V. Panfilov, Description. Forewing relatively slender,apex slightly pointed, but not falcate. Costal veinlets unforked. A subcostal cross vein present basally. Veins Rs and MA separate more distally, beyond half wing length. Rs with 4 branches. MP forks near base of wing, before the separation of MA from Rs. CuA long and parallels CuP, pectinately branched. 1A moderately long, pectinately branched. 2A and 3A well developed. Trichosors present obviously around the apical margin of wing ( Fig.4). In hind wing MP forks before the separation of Rs from R. 1A short. 2A and 3A poorly developed. Apex of wing very acute. The details of venation of both wings are shown in text Fig.3. The wings are without indications of markings, and with relatively more crossveins. Nygmata unknown. Comparison. The new species differs from the Epiosmylus longicorni by Rs with few branches, by more crossveins and by acute apex in the hind wing.