关键词: 蠓科, 吸血蠓, 种类分布

Abstract: Objective To study on distribution of sucking-blood midges in southern frontiers of Tibet in China.Methods Using bed-curtain,insect net and light trap to collect midges.Results There were 65 species of sucking-blood midges known in 5 counties of southern frontiers of Tibet,China.Among 62 species of Culicoides,2 species of Lasiohelea and 1 species of Leptoconops were recorded,the male of Culicoides yadongensis (Chu,1977) was newly found and Lasiohelea was recorded for the first time in Tibet.It was recorded for the fauna of sucking-blood midges species known.Conclusion This paper provided basis for studies on the faunal distribution of sucking-blood midges in southern frontiers of Tibet,China.Culicoides yadongensis(Chu,1977)♂(Fig.1):Male wing length 1.05 mm.Eyes with interfacetal hairs,antennal ratio 1.01,sensilla of coeloconica of antennal present on segment 3,13-15,third segment of palpus with sensory pit,palpal ratio 2.63.Wing without pattern,macrotrichia distributed on distal third-two of wing.Cudal margin of ninth tegum with apicolatreal processes,post-shaped distal stem of aedeagus;parameres with bases separate,main body moderately swollen,tapering to attenuated tip.