灰翅麦茎蜂形态及其与另3种麦茎蜂的比较（膜翅目：茎蜂科）

描述灰翅麦茎蜂(Cephus fumipennis Ev.)(膜翅目:茎蜂科)的形态。其成虫体柔弱、柱状、黑色，具金属光泽，被灰棕色绒毛，长8 ~11 mm，腹部、足和前翅具黄斑或黄带；幼虫具独特的肛上突，其顶面和侧面光滑。比较灰翅麦茎蜂和另外3种麦茎蜂(C.pygmaeus, C.cinctus,C.tabidus)的形态，指出4种成虫和幼虫的主要相似性和差别集中于成虫色素沉积、马蹄形压痕、产卵器鞘和幼虫第8~10腹节背板及肛上突。

Morphology of Cephus fumipennis (Hymenoptera: Cephidae) and Comparison with Other Three Cephids

The morphology of Cephus fumipennis Eversmann (Hymenoptera: Cephidae) was described.Adults are overall slender, cylindrical, and black, with a metallic luster, covered with grayish brown villi, and 8-11 mm long.The abdomen, legs and forewings bear yellow spots or bands.The larva has a distinct suranal process with its top and lateral surfaces glabrous.C.fumipennis was compared with the other three cephids, C.pygmaeus, C.cinctus, and C.tabidus, and major similarities and differences were given, focusing on body pigmentations, horseshoe shaped depressions and vaginula for adult, and on abdominal tergites VIII, IX and X, and suranal process for larva.