New Xyelidae (Hymenoptera) from the Mesozoic of Asia

The article is a survey of the higher classification of the Xyelidae (Insecta: Hymenoptera) as well as two new tribes and twelve new genera being described. Fossils that form the basis of this work are from the Upper Triassic (?) (Kirgizia), Upper Jurassic (South Kazakhstan), and Upper Jurassic or Lower Cretaceous (Vitim river, Baysa area). -- R. W. Hodges.