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

Coleoptera collected with light traps and ethanol traps in plantation of Eucalyptus spp. in the south of the state Rio Grande do Sul

O trabalho teve como objetivo coletar, identificar e estudar a flutua\ue7\ue3o populacional de esp\ue9cies da ordem Coleoptera em plantio de Eucalyptus spp. no munic\uedpio de Pinheiro Machado, estado do Rio Grande do Sul. Os insetos foram coletados com armadilhas luminosas e etan\uf3licas a cada quinze dias, no per\uedodo de fevereiro de 2006 a outubro de 2007. Os exemplares, ap\uf3s triagem, foram identificados por compara\ue7\ue3o com cole\ue7\uf5es entomol\uf3gicas e literatura especializada. Foram coletados 6.172 indiv\uedduos, distribu\ueddos em 39 fam\uedlias e 249 esp\ue9cies, dessas 130 foram identificadas em n\uedvel de esp\ue9cie e 119 em fam\uedlia, representando 4.498 e 1.674 do total de indiv\uedduos coletados respectivamente. As esp\ue9cies mais abundantes foram Cyclocephala sp. 1, Cyclocephala sp. 2, Dyscinetus sp. 1, Euetheola humilis (Scarabaeidae) e Neoclytus curvatus (Cerambycidae) representando 49,28% dos indiv\uedduos identificados por g\ueanero e/ou esp\ue9cie. Scarabaeidae apresentou o maior n\ufamero de indiv\uedduos (2.588), distribu\ueddos em 37 esp\ue9cies. As fam\uedlias Cerambycidae (47) e Scolytidae (40) apresentaram maior quantidade de esp\ue9cies. Em todos os meses coletaram-se indiv\uedduos da ordem Coleoptera, com maior n\ufamero de exemplares em dezembro de 2006 e mar\ue7o de 2007.The objective of this study was to collect, identify and study population fluctuation of Coleoptera species in a forest of Eucalyptus spp., on a farm in the municipality of Pinheiro Machado, Rio Grande do Sul State. Insects were collected with light traps and ethanol traps, once every fifteen days, in the period of February 2006 to October 2007. The insects, after selection procedures, were identified based on entomological collections and specialized literature. A total of 6172 individuals were collected and distributed among 40 families and 249 species, of which 130 were identified at the species level and 119 at the family level, representing 4498 and 1674 of total individuals collected, respectively. Cyclocephala sp. 1, Cyclocephala sp. 2, Dyscinetus sp. 1, Euetheola humilis (Scarabaeidae) and Neoclytus curvatus (Cerambycidae) were the most abundant species, representing 49.28% of the individuals identified in genus and/or species. Scarabaeidae presented the highest number of individuals (2588), distributed in 37 species. The families Cerambycidae (47) and Scolytidae (40) presented the largest number of species. Individuals of Coleoptera were trapped at all collections but the largest number of individuals was trapped in December 2006 and March 2007