ResumoEste estudo teve como objetivo estimar a quantidade média de sementes de Erythrina falcata consumida por larvas de Agathodes designalis (Guenée, 1854), Liopasia ochracealis (Walker 1865) e Terastia meticulosalis (Guenée, 1854) (Lepidoptera, Crambidae) que predam suas sementes. As larvas de lepidópteros foram coletadas de vagens de E. falcata em ambiente natural, individualizadas em placas de Petri e alimentadas com sementes imaturas. O número médio de sementes predadas variou de duas, para A. designalis a cinco para L. ochracealis. O parasitismo de Macrocentrus sp. (Hymenoptera, Braconidae) em larvas de T. meticulosalis, é relatado pela primeira vez. Os resultados demonstram que a ação do parasitoide é um dos fatores que influencia nas taxas de predação de sementes de E. falcata por larvas de lepidópteros no ambiente natural.
Palavras-chave:Interação inseto-planta; Mata Atlântica; Macrocentrus; Terastia meticulosalis
AbstractPredation of Erythrina falcata Benth. (Fabaceae, Faboideae) seeds by larvae of three species of Lepidoptera (Crambidae) and the effect of parasitoids on the predation. This study aimed to estimate the average number of seeds of Erythrina falcata eaten by larvae of Agathodes designalis (Guenée, 1854), Liopasia ochracealis (Walker 1865) and Terastia meticulosalis (Guenée, 1854) (Lepidoptera, Crambidae), which prey on the seeds of this species. The lepidopteran larvae were collected in the field from fruits of E. falcata, isolated in Petri dishes, and fed with immature seeds. The average number of seeds preyed upon by the larvae ranged from two (A. designalis) to five (L. ochracealis). This work is also the first report of the parasitism of Macrocentrus sp. (Hymenoptera, Brachonidae) on larvae of T. meticulosalis. The results demonstrate that this parasitism is one of the factors that influence the rates of seed predation of E. falcata by lepidopteran larvae in the natural environment.