新疆坐腹姬蜂属Enizemum一新种记述：（膜翅目：姬蜂科：蚜蝇姬蜂亚科）

坐腹姬蜂属Enizemun Foerster,1869,隶属于膜翅目姬蜂科蚜蝇姬蜂亚科,其主要特征为:中胸背板无盾纵沟;并胸腹节基区多少平坦;前翅通常有小翅室;腹柄节长宽几乎相等,背板有1对脊由基部伸达后缘;第2腹节背板基部有1对脊,第4腹节通常基部有折缘缝;雄虫触角中间鞭节有角下瘤。该属世界已报道约15种,中国记载2种:E.ornatum Gravenhorst,1829和E.formosense Uchida,1957。我们在整理标本时,发现该属1新种,现记述如下:

DESCRIPTION OF A NEW SPECIES OF THE GENUS ENIZEMU M FOERSTER (HYMENOPTERA: ICHNEUMONIDAE) FROM XINJIANG, CHINA

Enizemum urumqiensis M a &. Wang n. sp. is described in the paper. It is similar to both E. ornatum Graven., 1829 and E. tridentatum Dasch, 1964, but the differences may be seen in the following key.1.Petiole with a pair of strong carinae, areolet petiolate, basal hamuli 3-4, malar space 0.5-0.8X basalwidth of mandible 2Petiole with a pair of weak carinae, areolet sessile, basal hamuli 2, malar space 0.9- 1.0X basal width of mandible. Norch America E. tridentatum Dasch, 19642.Propodeal carinae strong. Male face without a black longitudinal spot under each antennal fossa, anterior corners of scutellum and prepectus yellow. Europe, North America, Russia, China E. ornatum Graven, 1829Propodeal carinae weak and indistinct. M ale face with a black longitudinal spot under each antennal fossa, anterior corners of scutellum and prepectus black. China (Xinjiang) E. urumqiensis Ma &. Wang n. spHolotype : Xinjiang: Urumqi, 24- IX -1987, Ma Qi, No. 870479; allotype : Xinjiang: Urumqi, 24- IX - 1987, Ma Qi, No. 870481, paratypes 5 : Xinjiang: Urumqi, 24- IX - 1987, Ma Qi. The type specimens are deposited in the Plant Protection Institute, Xinjiang Academy of Agricultural Sciences, C hina.