Ataenius beattyi is a species of beetle of the family Scarabaeidae. It is found in Barbados, Desirade, the Dominican Republic, Guadeloupe, Jamaica and the Virgin Islands.
Description Adults reach a length of about . They are very similar to Ataenius steinheili and might just represents a geographic, insular form. It differs from steinheili only slightly by having the pronotal punctures larger and closer, while the male genitalia of both species do not reveal any visible differences.
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