Ataenius tuberculatus is a species of beetle of the family Scarabaeidae. It is found in Bolivia, Brazil (Mato Grosso, Minas Gerais), Colombia, Guyana and Venezuela.
Description Adults reach a length of about . They have a carbon black body, with the surface partially covered with a grey argillaceous coating.
Life history Specimens have been collected in open grassy savanna and marsh areas.
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