新疆天山毛蠓属二新种(双翅目:蠓科)

TWO NEW SPECIES OF DASYHELEA (DIPTERA: CERATOPOGONIDAE) FROM TIANSHAN MOUNTAIN, XINJIANG, CHINA

本文报道采自新疆天山的毛蠓属Ｄａｓｙｈｅｌｅａ２新种，分别为天山毛蠓Ｄ．ｔｉａｎｓｈａｎａｓｐ．ｎｏｖ．和高山毛蠓Ｄ．ｍｏｎｔａｎａｓｐ．ｎｏｖ．，模式标本保存在北京医学昆虫标本馆（北京丰台）。

In the present paper two new species of the genus Dasyhelea Kieffer, 1911 are des cribed. The type specimens are deposited in the Medical Entomology Collection (20 Dongdajie, Fengtai, Beijing 100071, China). 1. Dasyhelea tianshana sp. nov. (Fig. 1) Female: AR 0.82, PR 2.8. Wing 0.77 mm by 0.34 mm. TR: fore leg 2.3, middle leg 2.45, hind leg 2.46. Spermatheca and subgenital plete as in Fig.1 D and F. Male: AR 1.11. Wing 0.85 mm by 0.28 mm. Gonostylus stout with divided two basal lobes. Aedeagus and paramere as in Fig.1 H and G. Holotype♀, Allotype♂, Tianshan Mountain, Xinjiang, China, 26-VII-1985, collected by Yu Yixin. This new species is allied to Dasyhelea excellentis Borkent, but can be separated by female subgenital plete and male aedeagus. 2. Dasyhelea montana sp. nov. (Fig. 2) Male: AR 1.28. Wing 0.97 mm by 0.37 mm. TR: fore leg 2.2, middle leg 3.1 and hind leg 2.4. Hypopygium dark brown, as in Fig. 2. Holotype♂. Tianshan Mountain, Xinjiang, China, 26-VII-1985, Cool. Yu Yixin and Ma Dexin. This new species is allied to Dasyhelea mutabilis (Coquillett), but differs from the latter by the length of 9th tergum and male aedeagus.