片角叶蝉一新属一新种(同翅目:叶蝉科)

A New Genus and a New Species of Idiocerinae (Homoptera: Cicadellidae) from China

记述片角叶蝉亚科 Idiocerinae片角叶蝉族 Idiocerini1新属 :长尾叶蝉属L ongicauda,gen. n.及其 1新种 :三带长尾叶蝉 Longicauda trilineata,sp. n.。模式标本保存于西北农林科技大学昆虫博物馆。

In the present paper, one new genus and a new species of Idiocerinae are described. All the specimens are deposited in the Entomological Meseum, Northwest Science and Technology University of Agriculture and Forestry. Longicauda , Gen. nov. The new genus is similar to the genus Idioscopus , but can be distinguished from the latter by : body larger; distance shorter between occelli (the latter with occelus closer to eye); subgenital plate beyond pygofer side and with long setae on dorsal margin; aedeagus with a pair of short apical processes; style without or with a few setae at subapical part. Moreover, the genus can be distinguished from all the known genera of Idiocerini by its pygofer side extremely long and far exceeding anal apex. Longicauda trilineata , sp.nov. (Fig. 1) Length(incl. teg.):♂8.2 mm. Crown with coarse transverse lines and with a small round spot near eye. Face longer than width, with a T shaped blackish brown spot. Distance between occelli equals to 1/2 distance between eyes. Frontoclypeus with three longitudinal stripes. Clypellus with a middle ridge longitudinally. Pronotum with thin transverse lines and with two black spots near the fore margin. Fore wing with 2 anteapical cells .Hind femur with 2 apical spurs and 1 anteapical spur. Genitalia: Pygofer long, tapering to the end, far exceeding anal apex and with a long appendage from inner surface near abdominal margin. Subgenital plate longer than pygofer and with long setae along upper margin. Style thin, with 3～5 teeth in the middle of abdominal margin. Connective more or less T shaped, stem very thin, with membranous flange laterally. Aedeagal shaft with apex expanded laterally, forming small process, dorsal apodeme well developed and about Λ shaped. Holotype ♂, Paratype 1♂, Yunnan: Mengla, Xishuangbanna, 1-V-1974, coll. Zhou Yao and Yuan Feng.