SURVEY POPULATION AND FAUNA ANALYSIS OF LEPIDOPTERA IN Eucalyptus spp. IN THE MUNICIPALITY OF PINHEIRO MACHADO, RS

O trabalho teve como objetivo coletar, identificar e caracterizar faunisticamente os lepid\uf3pteros associados a um plantio de Eucalyptus spp., no munic\uedpio de Pinheiro Machado, RS. No per\uedodo de outubro de 2005 a outubro de 2007, a cada 15 dias, foram realizadas coletas de insetos com tr\ueas armadilhas luminosas instaladas no interior do florestamento. Ap\uf3s procedimentos de triagem, transfixa\ue7\ue3o e montagem os lepid\uf3pteros foram identificados comparando-os a cole\ue7\uf5es entomol\uf3gicas e com uso de literatura especializada. Foram coletados 2.020 indiv\uedduos, distribu\ueddos em 14 fam\uedlias, 106 g\ueaneros e 220 esp\ue9cies. As fam\uedlias com maior n\ufamero de esp\ue9cies coletadas foram Noctuidae (59), Geometridae (30), Arctiidae (28) e Saturniidae (14). De acordo com a classifica\ue7\ue3o faun\uedstica a maioria das esp\ue9cies foi considerada n\ue3o dominante, pouco frequente, rara e acidental. Dentre as esp\ue9cies identificadas, foram observadas algumas, cujas lagartas s\ue3o desfolhadoras do eucalipto; Oxydia agliata (Geometridae), Sarsina violascens (Lymantriidae), Automeris illustris , Eacles imperialis magnifica e Lonomia obliqua (Saturniidae), as quais necessitam ter suas popula\ue7\uf5es monitoradas.The objective of this research was to collect, to study and to characterize the fauna of lepidopterous associated with Eucalyptus spp., plantation in the Municipality of Pinheiro Machado, in RS state. In the period of October 2005 to October 2007, every 15 days, collections of insects were accomplished with three light traps. After selection and transfixion procedures, the lepidopterous were identified based on entomological collections and specialized literature. Two thousand and twenty individuals belonging to 14 families, 106 genera and 220 species were collected. The families with the highest number of species collected were: Noctuidae (59), Geometridae (30), Arctiidae (28) and Saturniidae (14). According to the fauna classification the most species were considered not dominant, uncommon, rare and accidental. Among the species identified, there were some whose larvae are defoliators of the eucalypts: Oxydia agliata (Geometridae), Sarsina violascens (Lymantriidae), Automeris illustris , Eacles imperialis and Lonomia obliqua (Saturniidae), which needs to have their populations monitored