The simultaneous occurrence of Adetus analis (Haldeman), Adetus fuscoapicalis Breuning and Plerodia syrinx (Bates) (Coleoptera: Cerambycidae, Lamiinae) is reported boring the stems of chayote, Sechium edule. A. analis is the same species as Adetus muticus (Thomson) been wich was referred before by several authors in Brazil. A. analis and A. fuscoapicalis are similar in morphologic and ethologic aspects. This paper presents a detailed description and illustrations of both species in order to help in the identification of these species. P. syrinx, which shows the same attacking behavior of these species of Adetus, also had its morphological characters described, in pupal and adult stages.
Adetus analis; Adetus fuscoapicalis; Adetus muticus; Plerodia syrinx; Sechium edule
