Abstract
Two new genera with two new species, Formosibittacus macularis gen. et sp. nov. and Jurahylobittacus astictus gen. et sp. nov. are described on the basis of well preserved specimens collected from the Jiulongshan Formation (Middle Jurassic) of Daohugou, Inner Mongolia, China. Formosibittacus can be distinguished from all known genera by a combination of the following features: three cross-veins between R 1 and R 2+3 ; one pterostigmal cross-vein; and two cross-veins between M 4 and CuA. Jurahylobittacus differs from all known genera by a combination the following of characters: one cross-vein between R 1 and R 2+3 ; one pterostigmal cross-vein; and two cross-veins between M 4 and CuA.References
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