Ataenius petrovitzi is a species of beetle of the family Scarabaeidae. It is found in Argentina, Bolivia, Brazil (Amazonas, Mato Grosso, Mato Grosso do Sul, Rondônia, Roraima), Colombia, Ecuador, Paraguay and Peru.
Description Adults reach a length of about . They have a parallel-sided, piceous or brownish body, with the upper surface entirely and tightly covered with an olivaceous or greyish argillaceous coating.
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