A new genus of Scoliidae (Insecta: Hymenoptera) from the Lower Cretaceous of northeast China

摘要

A new genus and species of Scoliidae (Hymenoptera), Sinoproscolia yangshuwanziensis gen. et sp. nov., is described from the Lower Cretaceous Yixian Formation in Inner Mongolia, China and attributed to the subfamily Proscoliinae. Some characteristics, including complete crossveins lr-rs and 2r-m in the fore-wing, and a free section present in almost all longitudinal veins indicate a basal position of the new genus in Proscoliinae. The presence of vein 2A suggests its atavistic origin in Sinoproscolia gen. nov. rather than a true plesiomorphy. (C) 2014 Elsevier Ltd. All rights reserved.