The occurrence of the Cyclocephala forsteri (Coleoptera: Melolonthidae) beetle, in area with Acronomia aculeata (Arecaceae), was verified in Dourados, Mato Grosso do Sul State, Brazil, in November and December 2008, and from October to December 2009. Adult beetle was observed attacking the plant inflorescence, causing the fall of flower buds and, consequently, reduction of fruits on the bunch of A. aculeata.
Scarabaeidae; macaúba palm tree; integrated pest management; biodiesel