Oxyataenius is a genus of beetle of the family Scarabaeidae. It is monotypic, being represented by the single species, Oxyataenius morosus, which is found in Chile.
Description Adults reach a length of about . They have a moderately shining, mostly piceous body, which is covered with setae. The elytra are dark brown, the legs brownish and the underside is reddish brown.
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