贵州省溪蛉三新种记述：（脉翅目：溪蛉科）

脉翅目(Neurcptera)现存的20科中,只有2个科具单眼。其中溪岭科(Osmylidae)幼虫是水生的,体狭长、上颚细长而直伸,有长牙蛉之称。溪蛉成虫多栖息于林间溪流附近,也有的在田间活动,捕食蚜虫等小虫,趋光性很强。体中至大型,触角丝状或念珠状,翅脉复杂,径分脉由1条Rs与R相连,翅多具花斑,翅缘在各脉间有缘饰,横脉很多。雌蛉有发达的产卵器,突出于腹端下方,呈瓣状。

THREE NEW SPECIES OF OSM YLIDAE (NEUROPTERA)FROM GUIZHOU

The neuropterous family Osmylidae is new to Guizhou Province, and three species of the genus Thyridosmylus Kruger are described as new to science. The type specimens are kept in the Insect Collection of Beijing Agricultural University.1.Thyridosmylus maolanus Yang, sp. nov. (Figs. 1,2)Holotype , allotype , Guizhou: Libo County (Yaozhai Maolan), (108.01E, 25.13N), 13- V -1990, leg. Yang Chi-kun. Paratype 1 , as holotype, but collected by the Guizhou Forestry Institute.Somewhat allied to T. medoganus Yang (1988) without hyaline patches on the fore-wings, but differs by the genitalia of both sexes.2.Thyridosmylus trifasciatus Yang, sp. nov. (Fig. 3)Holotype , Yaozhai Maolan, 13- V - 1990, leg. Yang Chi-kun.This new species was collected together with the above species T. maolanus Yang, but appears to be much smaller, fore-wing with three brown bands and a distinct black stripe at the tip of apex. The male genitalia is also different.3.Thyridosmylus qianus Yang,sp. nov. (Fig. 4)Holotype , Guizhou: Guiyang City (Mt. Qianlingshan) (106.7E, 26.6N), 3- V -1987, leg. Xie Xianglin.A pale species, allied to the new species T. trifasciatus Yang, but with only few brownish markings on the fore-wings. The genitalia of males can be compared in the text-figures.