Tanyana guyanaensis is a species of beetle of the family Scarabaeidae. It is found in Brazil (Acre, Mato Grosso), Colombia, French Guiana, Guyana and Suriname.
Description Adults reach a length of about . The head has coarse punctures and the clypeus is clearly sinuate. The pronotum has fine and coarse punctures. The elytral striae are coarsely punctate and the abdominal ventrites are strigate.
Life history Specimens were collected at altitudes ranging from 30 to 480 metres.
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