Two new genera including four new species of fossil beetles assigned to the family Schizophoridae - Menopraesagus explanatus gen. and sp. nov., M. oxycerus gen. and sp. nov., M. grammims gen. and sp. nov. and Homocatabrycus liui gen. and sp. nov., and a new genus including one new species assigned to the family Ademosynidae - Lasiosyrie euglyphea gen. and sp. nov. are described. All of them are collected from the Middle Jurassic Jiulongshan Formation of eastern Inner Mongolia, China. Another two new fossil species referable to the genus Tetraphalerus of family Ommatidae, Tetraphalerus latus sp. nov. and Tetraphalerus curtinervis sp. nov., are reported from the Jehol Biota of western Liaoning, China.
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