中国裸齿角石蛾属五新种(毛翅目,齿角石蛾科)

DESCRIPTIONS OF FIVE NEW SPECIES OF THE GENUS PSILOTRETA (TRICHOPTERA,ODONTOCERIDAE) FROM CHINA

描述了裸齿角石蛾属Psilotreta kwantungensis种团的5新种,即弯钩裸齿角石蛾Psilotreta anfracta sp.nov.,直角裸齿角石蛾Psilotreta rectangula sp.nov.,具刺裸齿角石蛾Psilotreta spinata sp.nov.,细刺裸齿角石蛾Psilotreta tenuispina sp.nov.,以及缺肢裸齿角石蛾Psilotreta expers sp.nov.。模式标本保存于南京农业大学昆虫标本馆。

Five new species in genus Psilotreta are described and illustrated herein, i. e. P. anfracta sp. nov., P. rectangula sp. nov., P. spinata sp. nov., P. tenuispina sp. nov. and P. expers sp. nov. Schmid （1998） summarized the characters of male genitalia for North American Psilotreta sedes infcrlor appendage 2- segmented, basal segment stout, subhorizontal, and simple in shape, second article smaller than 1 st. inserted at apex of latter However, by studying Chinese materials, we found that 5 new species from southwestern and southeastern China, and 5 known species, P. kwantungensis Ulmer, 1926 （Guangdong, China）, P. lobopennis Hwang, 1957 （Fujian, China）, P. dardanos Malicky, 2000 （Zhejiang, China）, P. aello Malicky ＆ Chantaramongkol, 1996 （ Thailand ） , and P. albogera Mey, 1997 （ Vietnam ）, are sharing following homologous： 1 ） basal segment of inferior appendage broad and short, with forked apex composed by two well developed dorsal and ventral lobes; 2 ） distal segment inserted from dorsal lobe or between the dorsal and ventral lobes. They suggest that these species belong to the monophyletic P. kwantungensis Group. Several other characters could also be summarized for this Oriental species group： 1） the 1st and 2nd segments of maxillary palp almost equal in length; 2） discoidal cell presented in forewing （Yuan et al, 2008）; 3） phallus with one pair of parameres, In this group, 5 new species presented in this paper are dosely related by sharing characters of intermediate appendage arising ventrad on the body of X （except P, expers sp. nov, with intenrmediate appendage absent）, and parameres un-forked. Tennimology follows Parker etal. （1987）and Zhong etal. （1997）. The type specimens of the new species are deposited in the Insect Collection of Nanjing Agricultural University.