长足虻亚科系统发育研究及三新属记述(双翅目,长足虻科)

采用支序分析的方法首次对古北和东洋区长足虻亚科的24属3亚属之间的系统发育关系进行了分析.结果表明,长足虻亚科为一严格的单系群,其中Ahercostomus、Allohercostomus、Tachytrechus和Aphalacrosoma为一单系群,Tachytrechus和Aphalacrosoma为姐妹群.原为寡长足虻属Hercostomus亚属之一的Gymnopternus与新属Setihercostomus的亲缘关系较近,为有效属.粗柄长足虻属Ludovicius与Sybistroma为一严格单系群,建议合并为一属.弓脉长足虻属Paraclius Coquillet应为Pelastoneurus的异名.建立3新属,即准长毛长足虻属Aphypophyllus gen nov,模式种Ahy-pophyllus sinensis(Yang,1996);准白长足虻属Aphalacrosoma gen nov,模式种Aphalacrosoma postiseta(Yang et Saigusa,2001);毛颜寡长足虻属Setihercostomus gen nov.,模式种Setihercostomus zonalis(Yang,Yang et Li,1998).原为寡长足虻属的亚属Ahercostomus提升为属,模式种Hercostomus(Ahercostomus)jiangchenganus(Yang et Saigusa,2001).建立的新组合为:Ahypophytlus sinensis(Yang,1996)comb. nov. , Aphalacrosoma hubeiense (Yang, 1998) comb. nov., A. postiseta (Yang et Saigusa, 2001) comb. nov.,A. sichuanense (Yang et Saigusa, 1999) comb. nov., Seti hercostomus setifacies (Stackelberg, 1934) comb. nov., S. zonalis (Yang, Yang et Li, 1998)comb. nov., S. wuyangensis (Wei, 1997) comb. nov., S. huangi (Zhang, Yang et Masunaga, 2004) and Ahercostomus jiangchenganus (Yanget Saigusa, 2001) comb. nov. .

A STUDY ON THE PHYLOGENY OF DOLICHOPODINAE FROM THE PALAEARCTIC AND ORIENTAL REALMS, WITH DESCRIPTIONS OF THREE NEW GENERA (DIPTERA, DOLICHOPODIDAE)

The phylogenetic relationships among genera of Dolichopodinae from the Palaearctic and Oriental Realm are ana lyzed for the first time. The subfamily Dolichopodinae is confirmed to be a monophyly. A monophyletic clade including the ge nera Ahercostomus, Allohercostomus, Tachytrechus and Aphalacrosoma is suggested, and a sister group relationship of Tachytrechus and Aphalacrosoma is indicated. Gymnopternus, which is originally a subgenus of Hercostomus, is suggested to be a valid genus and has close relationship with Setihercostomus gen. nov. The genera Ludovicius and Sybistroma resemble each other and should be put together as a single genus. And the genus Paraclius Coquillet might be the synonym of Pelastoneurus.Three new genera, Ahypophyllus gen. nov. , Aphalacrosoma gen. nov. , and Setihercostomus gen. nov. are erected, and the subgenus Ahercostomus Yang et Saigusa of the genus Hercostomus is elevated to the generic level. The following new combinations are erected: Ahypophyllus sinensis (Yang, 1996) comb. nov., Aphalacrosoma hubeiense (Yang, 1998) comb. nov.,A. postiseta (Yang et Saigusa, 2001) comb. nov., A. sichuanense (Yang et Saigusa, 1999) comb. nov., Setihercostomus setifacies (Stackelberg, 1934) comb. nov., S. zonalis (Yang, Yang et Li, 1998) comb. nov., S. wuyangensis (Wei,1997) comb. nov., S. huangi (Zhang, Yang et Masunaga, 2004) and Ahercostomus jiangchenganus Yang et Saigusa, 2001) comb. nov.