supported by the National Basic Research Program of China(973 Program)(2012CB821906);the National Natural Science Foundation of China(No.31230065,41272006);KEY project of the Beijing Municipal Commission of Education(KZ201310028033);Program for Changjiang Scholars and Innovative Research Team in University(IRT13081);APR,by the Presidium RAS Program"Origin of biosphere and evolution of the geo-biological system"
Two new genera with two new species of sawflies, Cathayxyela extensa gen. et sp. nov. and Aequixyela immensa gen. et sp. nov., from the Middle Jurassic Jiulongshan Formation of southeastern Inner Mongolia, China, are ...