Abstract
ABSTRACT A new orsodacnid leaf beetle, Aulacoscelis (Cretaulacoscelis) santanensis n. subgen. et n. sp. of the subfamily Aulacoscelidinae of the family Orsodacnidae, is described from the Aptian-Albian Santana Formation of the Lower Cretaceous. The new subgenus differs from the subgenus Aulacoscelis s. str. in the elytra having distinct striae, the large eyes and a narrow-triangular scutellum. This is the first record of a fossil Orsodacnidae and the first Chrysomeloidea described from the Santana Formation.
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