RESUMO:O óleo essencial das folhas de Schinus terebinthifolius foi obtido por hidrodestilação e analisado por CG-EM. O rendimento do óleo foi de 0,8%, sendo identificados 37 constituintes químicos. Os componentes principais foram germacreno D (25,0%), (E)-b-cariofileno (17,5%) e d-elemeno (10,5%). O óleo essencial foi diluído em acetona nas concentrações de 10 -2 a 10 -8 e aplicado aos insetos (Hypothenemus hampei) por aplicação tópica e exposição em superfície contaminada. As taxas de mortalidade foram avaliadas após 24 e 48 horas do início do experimento. A aplicação em superfície contaminada resultou em 25% de mortalidade no controle, enquanto nas diluições de 10 -2 a 10 -8 foram observados 100,0 a 30,0% de mortalidade. Na aplicação tópica, observou-se 27,5% de mortalidade no controle e 97,5 a 77,5% nas diluições de 10 -2 a 10 -8 .Palavras-chave: cafeicultura, aroeira vermelha, inseticida natural, metabólitos secundários. ABSTRACT: Chemical composition and insecticidal activity of the essential oil ofSchinus terebinthifolius Raddi (Anacardiaceae) on coffee berry borer (Hypothenemus hampei) Ferrari. The essential oil from the leaves of Schinus terebinthifolius was obtained by hydrodistillation and was analyzed by GC-MS. The oil yield was 0.8%, and 37 chemical constituents were identified. The main components were germacrene D (25.0%), (E)-bcariophyllene (17.5%) and d-elemene (10.5%). The essential oil was diluted in acetone in concentrations of 10 -2 to 10 -8 and it was applied to insects (Hypothenemus hampei) by topical application and exposure to contaminated surface. Mortality rates were evaluated after 24 and 48 hours. The contaminated surface application resulted in 25.0% of mortality in control while the dilutions of 10 -2 to 10 -8 resulted in 100% to 30.0% of mortality respectively. In the topical application, it was observed 27.5% of mortality in control and 97.5 to 77.5% of mortality in dilutions of 10 -2 to 10 -8 .
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