关键词: 双翅目, 蝇科, 阳蝇属, 新种

Abstract: This paper describes two new species of Helina Robineau-Desvoidy,1830 from western region of Sichuan Province during the years 1979-2003. The type specimens are deposited in the Institute of Plant Physiology and Ecology,Shanghai Institutes for Biological Sciences,Shanghai 200032,China. 1 Helina occidentalisinica sp.nov (Fig.1) Male: Body black and legs fuscous. This new species is closely related to Helina dibrachiata Fang,Li et Deng,1986,but in the latter,the eyes bare; dorsal surface of scutum with four stripes; dorsal of abdomen with lateral spots; Surstylis long and S-shaped in lateral view. Female: Unknown. Holotype ♂,Mt. Erlangshan (Forest Farm,2 760 m; 29°54′N,102°08′E),Sichuan Prov.,China,June 21,1982,Coll.by Shi Ping. 2 Helina atripraefemura sp.nov (Fig.2) Male: Body black dark,legs yellow partly. This new species is closely related to Helina subbrunneigena Fang et Fan,1992,but in the latter,the fore tibia with p1; hind tibia without 1-3 rows of av and pv setae respectively; stigmata smaller; apical part of cerci of male without outer projection in posterior view; apical part straight of surstyli in lateral view. Female: Unknown. Holotype ♂,Ya'an (Mt. Zhougongshan,1 760 m; 29°58′N,102°59′E ),Sichuan Prov.,May 21,1993,Coll.by Feng Yan.