RESUMEN
This study is focused on the cricket leeches, Rhopalosomatidae, a family that is only poorly represented in entomological collections in Brazil. We provided a revised and updated key to the genera occurring in Brazil with the major traits of genera illustrated through high-resolution photomicrography. Also, we provided a synopsis of genera, a list of the species currently recorded from Brazil, the first country records for Rhopalosoma minus Townes, 1977 and Rhopalosoma breelandi Townes, 1977, which increases the diversity of these wasps in the country. Additionally, we provided information and a brief discussion about collection methods, flotation, and abundance of specimens collected. Maps with the geographical distribution of the studied species based on the previous and new records are also provided.
RESUMEN
O objetivo deste trabalho foi realizar o levantamento das famílias de himenópteros parasitoides associados ao cultivo do tabaco (Nicotiana tabacum L) no Estado do Rio Grande do Sul. Foram realizadas coletas quinzenais com armadilhas de Malaise, pitfalls e bandejas amarelas em lavouras de tabaco nos municípios de Santa Cruz do Sul e Lagoão. Durante o período de novembro de 2007 a fevereiro de 2008, foram coletados 1.047 indivíduos da ordem Hymenoptera. Destes, 738 parasitoides estão distribuídos em 23 famílias. Ichneumonidae, Braconidae e Scelionidae foram as famílias mais abundantes, representando 44,6%, 14,9% e 11,5% dos indivíduos parasitoides coletados, respectivamente.
The aim of this work was to survey the families of hymenoptera associated with tobacco (Nicotiana tabacum L.) in Rio Grande do Sul State, Brazil. Material was collected weekly using Malaise, pitfall and yellow pan traps in tobacco crops in the counties of Santa Cruz do Sul and Lagoão. During the period of November 2007 to February 2008, 1,047 individuals belonging to the order Hymenoptera were collected. Of these, 738 were distributed in 23 families known as parasitoid. Ichneumonidae, Braconidae and Scelionidae were the most abundant families, representing 44.6%, 14.9% and 11.5% of the collected parasitoids, respectively.
Asunto(s)
Nicotiana/parasitología , Biodiversidad , Himenópteros/clasificaciónRESUMEN
ABSTRACT The aim of this work was to survey the families of hymenoptera associated with tobacco (Nicotiana tabacum L.) in Rio Grande do Sul State, Brazil. Material was collected weekly using Malaise, pitfall and yellow pan traps in tobacco crops in the counties of Santa Cruz do Sul and Lagoão. During the period of November 2007 to February 2008, 1,047 individuals belonging to the order Hymenoptera were collected. Of these, 738 were distributed in 23 families known as parasitoid. Ichneumonidae, Braconidae and Scelionidae were the most abundant families, representing 44.6%, 14.9% and 11.5% of the collected parasitoids, respectively.
RESUMO O objetivo deste trabalho foi realizar o levantamento das famílias de himenópteros parasitoides associados ao cultivo do tabaco (Nicotiana tabacum L) no Estado do Rio Grande do Sul. Foram realizadas coletas quinzenais com armadilhas de Malaise, pitfalls e bandejas amarelas em lavouras de tabaco nos municípios de Santa Cruz do Sul e Lagoão. Durante o período de novembro de 2007 a fevereiro de 2008, foram coletados 1.047 indivíduos da ordem Hymenoptera. Destes, 738 parasitoides estão distribuídos em 23 famílias. Ichneumonidae, Braconidae e Scelionidae foram as famílias mais abundantes, representando 44,6%, 14,9% e 11,5% dos indivíduos parasitoides coletados, respectivamente.