Pelecinid wasps (Insecta: Hymenoptera: Proctotrupoidea) from the Yixian Formation of western Liaoning, China

Eight new species referable to three new genera from the uppermost Jurassic or Lower Cretaceous Yixian Formation in Beipiao (western Liaoning Province, China) are established herein and assigned to the subfamily Iscopininae in the family Pelecinidae (Insecta: Hymenoptera: Proctotrupoidea). They are Sinopelecinus gen. nov., which includes S.delicatus sp. nov., S. epigaeus sp. nov., S. magicus sp. nov., and S. viriosus sp. nov.;Eopelecinus gen. nov., which includes E. vicinus sp. nov., E. shangyuanensis sp. nov., andE. similaris sp. nov.; and Scorpiopelecinus versatilis gen. et sp. nov. A diagnosis of the subfamily Iscopininae is given on the basis of the new material. Many characters within this subfamily show that Iscopinus Kozlov, 1974 is more primitive than the other genera, among which Scorpiopelecinus is the most primitive, Sinopelecinus more advanced and Eopelecinus the most advanced.