In this paper one new genus and two new species,Brachyoxyela brevinodia sp.nov.and Brachyoxyela gracilenta sp.nov.,in the subfamily Macroxyehnae of the family Xyelidae,are described and illustrated.The specimens were collected from the Yixian Formation,the Upper Jurassic to Lower Cretaceous,of Beipiao City,Liaoning Province,northeastern China.The new genus is established based on the characters that vein Sc meets R only beyond origin of Rs,third antennal segment is almost equal in length to the rest flagellomeres combined,terminal flagellomeres increasingly shortened toward apex,and vein 2r-rs inclined toward the apex of wing.
Prophaenognatha robusta gen.et sp.nov.(Scarabaeoidea:Scarabaeidae:Aclopinae),the best-preserved aclopine fossil so far,is described and illustrated from the Upper Jurassic-Lower Cretaceous Yixian Formation of the Jehol Biota,western Liaoning Province,NE China.The key to extinct and extant genera of Aclopinae is given and the monophyly of extant and fossil Aclopinae lineages is supported by five character states.The new taxon provides evidence about the evolution of Scarabaeoidea with its phylogenetic pos...
