THREE NEW SPECIES OF CALLIPHORINI FROM SICHUAN, CHINA(DIPTERA:CALLIPHORIDE)

n this paper, three species of Calliphorini are described as new to science. All the type specimens are preserved in the Hygienic and Antiepidemic Station of Ya'an Prefecture, Sichuan, China.1 Onesia erlangshanensis sp. nov. (Figs.15)  Body length 85mm. This new species is allied to Onesia hokkaidensis (Baranov, 1937),but differs from the latter in prescutum with 4 distinct black vittae, sternopleural bristles 3∶1;fore tibia without ad setae; surstyli straight in posterior view; lateral pterygoid of hypophallus developed, midian stripe slender and weaker, and paraphallus 2.3 times as long as praeputium in lateral view. ♀. Unknown. Holotype , Erlangshan Forest Farm (2740m; 29° 53′N,102°10′E), Sichuan Province, June 10, 1987, collected by FENG Yan.2 Onesia flora sp. nov. (Figs.69) .Body length 10mm. This new species is allied to O.wolongensis Chen et Fan, 1992 from Sichuan, but differs from the latter in the following characters: the third antennal segment 3 times as long as the 2nd; the 9th tergite extended extremely backwards and covering anterior half of surstyli; cerci short and thin, segregated into leavelike blades; vertical part of paraphallus healed and distal end sunken upwards; aedeagus flower like in posterior view; surstyli strong and stout, lower side straight in lateral view. ♀. Unknown. Holotype , Hanyuan (Mt. Jiaodingshan 3 550 m; 29°22′N,102°53′E), Sichuan Province, June 24, 1987, collected by FENG Yan; paratype 1[QX(Y15], June 22, 1984 same locality as holotype, collected by MA XueQing.3 Bellardia megaloba sp. nov. (Figs.1014) . Body length 7mm. This species is closely related to B. fengchengensis Chen, 1979, from Liaoning Province, but differs from the latter in frons width less than the diameter of ocellar triangle; tibiae partly brown; vibrissal angles dark; surstyli 5 times as wide as cerci in lateral view; apical part of paraphallus acute anglelike and curved forwards; one third of apical pregonites with three long hairs. ♀. Unknown. Holotype , Erlangshan Forest Farm (2780m; 29°53′N, 102°10′E), Sichuan Province, May 8, 1985, collected by FENG Yan.