中国四川厕蝇属(双翅目:厕蝇科)研究并记一新种

Study on the Genus Fannia (Diptera:Fanniidae) with a Description of a New Species from Sichuan,China

厕蝇属Fannia为Robineau-Desvoidy于1830年以Fannia saltatrix R.-D.,1830=F.scalaris(Fabricius,1794)为模式种建立的1个属,隶双翅目Diptera环裂亚目Cyclorrhapha有瓣类Calyptratae厕蝇科Fanniidae,是该科4个属中种类最多的一个属。迄今全世界已知厕蝇科有300多种,我国已知有3属94种,其中厕蝇属91种,占我国厕蝇科总数的96.81%,分布于四川的有37种,占我国厕蝇属总数的40.66%;在37种中,近年鉴定命名并正式发表的有19种,占51.35%,25种为四川特有,占67.57%,足见四川厕蝇属种类的多样性,是天赋的极其宝贵的基因库。本文编制了四川厕蝇属已知种检索表,并对其中的1个新种:西部厕蝇Fannia hesperia Feng sp.nov.的鉴别特征进行了详细描述。新种模式标本藏于中国科学院上海植物生理生态研究所昆虫博物馆。

The genus Fannia Robineau-Desvoidy,1830 belongs to Fanniidae,Calyptratae,Cyclorrhapha,Diptera. About 300 species are known in the world,and 91 species of them （including a new species） have been found in China. There are 37 species distributed in Sichuan Province,of which 19 new species have been named in recent years,and 25 known species are endemic to Sichuan Province. In this paper,a key to 37 known species of the genus Fannia in Sichuan is given and a new specie,Fannia hesperia Feng,sp.nov.,is described and illustrated. The type specimens of the new species are deposited in the Entomological Museum,Shanghai Institute of Plant Physiology Ecology,Chinese Academy of Sciences,Shanghai,China. Fannia hesperia Feng sp.nov. （Figs. 1～4） Male：This new species belongs to the F. canicularis subgroup of F.canicularis group,and it resembles F. indica Chillcott,1961,but differs from the latter by the arista bare; parafacia without microchaeta; thorax and abdomen covered with blue-grey pollinosity; abdomen with bright dark median vitta; hind tibia with one pd of seta. Female：Unknown. Holotype♂,Mingshan （Cheling,30°04＇N,103°14＇E,alt. 560 m）,Sichuan Prov.,27 June 1984,coll. by FENG Yan; paratypes 2 ♂♂,same as holotype. Etymology,The specific name was derived from the Greek words ＂hesper＂ and ＂ia＂ ,referring the type specimen locality in western Sichuan Province.