New Ephialtitidae (Insecta: Hymenoptera) from the Jurassic Daohugou Beds of Inner Mongolia, China

Five new species are described from the Middle-Upper Jurassic Daohugou Beds of Inner Mongolia, China, and assigned to the genus KaratausRasnitsyn, 1977 in the subfamily Symphytopterinae of Ephialtitidae. They are illustrated as Karataus daohugouensis n. sp., K. strenuus n. sp., K. vigoratus n. sp., K. exilis n. sp., and K. orientalis n. sp., and a key to species of Karataus is presented.