Abstract: This paper reported Culicoides nielamensis sp.nov.,and newly found male of Culicoides pelius Liu et Yu 1990. The type specimens are deposited in the Medical Entomology Collected Gallery, Beijing 100071,China.1. Culicoides nielamensis Liu et Deng ,sp.nov.(Fig1)The new species is somewhat allied to Culicoides pulicaris (Linnaeus)1758,but it distinctly different in sensory pit of palpus third segmet, PR,pale spots in cell M1 and cell M2 of wing of male and female. The new species is also somewhat allied to C.pelius Liu et Yu 1990,but both of them are distinctly different in numbers and shape of pale spots of wing,and numbers of hindtibial comb of female.Female wing length 1.44(1.30-1.65,n=10)mm. Eyes contiguous, antennal ratio 1.03(0.93-1.15,n=10),sensilla of coeloconica of antennal present of 3,11-15; Third segment of palpus with sensory pit, palpal ratio 2.16(1.83-2.53,n=10);mandible with 14(13-15,n=10)teeth. Pale spots and dark markings extensive of wing,wing with 9 pale spots ,a dark marking in pale spot of cell M4.Hindtibial comb with 6 spines , second from the spur longest. Spermathecae 2,unequal,55×45μm,50×45μm.Male caudal margin of ninth tergum with apicolateral processes, basistyle with inside spinulae. Parameres with fringing hairs at tip.Holotype ♀, paratype 3♂ 10♀,collected on May 21,1987 from Nielam county,Tibet, China.2. Culicoides pelius Liu et Yu ,1990(Fig.2)Contr.Blood-Sucking Dipt.Ins.2∶19(♀)Male wing length 1.05mm. Eyes without interfacetal hairs; antennal ratio 1.03.sensilla of coeloconica of antennal present on segment 3,14-15;third segment of palpus with sensory pit, palpal ratio 2.86.Wing with 10 pale spots ,a dark marking in pale spot of cell M4. Cudal margin of ninth tegum with apicolateral processes; basistyle with inside spinulae; bar-shaped distal stem of aedeagus;parameres distal to simple filamentous.Specimen collected from Tibet,Zayu county,June 11,1988,light trap,1♂.

摘要： 本文报道了西藏库蠓一新种，聂拉木库蠓Culicoides nielamensis Liu et Den,sp.nov.;黑色库蠓Culicoides pelius Liu et Yu 1990雄虫的发现。新种模式标本保存在医学昆虫标本馆（北京100071）。

关键词: 双翅目, 蠓科, 库蠓属, 新种