内蒙古侏罗纪魔蜂科(膜翅目：冠蜂总科)昆虫新材料

NEW MATERIAL OF EPHIALTITIDAE(INSECTA:HYMENOPTERA:STEPHANOIDEA)FROM THE MIDDLE-UPPER JURASSIC OF INNER MONGOLIA,CHINA

描述了产于内蒙古宁城中-上侏罗统道虎沟化石层的两块魔蜂科雌蜂化石。根据其中一块标本建立1新种——拉氏冠腹魔蜂(Stephanogaster rasnitsyni Ding and Zhang sp.nov.),归入魔蜂亚科冠腹魔蜂属。另外一块标本归入原翅蜂亚科柔弱卡魔蜂(Karataus exilis Zhang,Zhang and Rasnitsyn,2014),这是首次发现该种的雌性标本,进一步证明了卡魔蜂属(Karataus)存在明显的性双型现象。道虎沟生物群和哈萨克斯坦晚侏罗世卡拉套生物群中魔蜂科有很大的相似性,表明这两个生物群的时代可能相差不远。

Summary Two female insects assigned to Ephialtitidae （Hymenoptera） are described herein from the Middle-Upper Jurassic Daohugou Beds of Ningcheng County, Inner Mongolia, China. Based on one specimen, a new species, Stephanogaster rasnitsyni sp. nov. , is established and attributed to the subfamily Ephialtitinae, and the other specimen is assigned to Karataus exilis Zhang, Zhang and Rasnitsyn, 2014 in the Symphytopterinae. The two specimens are housed in the Zhejiang Museum of Natural History.