Resumo. O objetivo deste estudo foi avaliar a contribuição de dois ambientes antrópicos (monocultura de Eucalyptus e pastagem de bovinos) como habitats para espécies de formigas edáficas de Floresta Estacional Decidual (mata nativa). Foram realizadas coletas semanais entre outubro de 2009 e março de 2010 utilizando armadilhas de solo do tipo Pitfall, no município de Santa Cruz do Sul, RS, Brasil. Duas hipóteses foram testadas: (1) a diversidade de formigas é maior na mata nativa em relação a pastagem de bovinos e a monocultura de Eucalyptus; (2) ambientes florestais (mata nativa e monocultura de Eucalyptus) apresentam assembleias de formigas mais similares entre si do que com ambientes abertos (pastagem de bovinos). Foi observado 930 espécimes de formigas, distribuídas em seis subfamílias, 17 gêneros e 28 espécies. As curvas geradas pelos estimadores de espécies indicam que a amostragem foi suficiente. A mata nativa foi mais rica que as outras fitofisionomias, corroborando com a hipótese (1). Embora a pastagem de bovinos tenha sido estatisticamente mais semelhante com a monocultura de Eucalyptus, possivelmente por serem ambientes mais impactados que a mata nativa, houve um alto compartilhamento de espécies entre os ambientes florestais. Esses resultados demonstram a importância da preservação de ambientes naturais como repositórios da mirmecofauna.Contribution of anthropogenic environments as habitats for soil ant from Deciduous Seasonal Forest in Southern BrazilAbstract. The aim of this study was to evaluate the contribution of two anthropic environments (Eucalyptus monoculture and cattle pasture) as habitats for edaphic ant species of Deciduous Seasonal Forest (native forest). Weekly collections were conducted between October 2009 and March 2010 using Pitfall traps, in the municipality of Santa Cruz do Sul, RS, Brazil. Two hypotheses were tested: (1) the diversity of ants is greater in the native forest in relation to cattle pasture and a monoculture of eucalyptus; (2) forest environments (native forest and Eucalyptus monoculture) present ant mounts more similar to each other and with open environments (pasture area). It was observed 930 occurrences of ants, distributed in six subfamilies, 17 genera and 28 species. Curves generated by species estimators indicate that sampling was sufficient. The native forest was richer than the other phytophysiognomies, corroborating with the hypothesis (1). Although the pasture area has been established statistically with the Eucalyptus monoculture, possibly for being environments more impacted than the native forest, there was a high species sharing among the forest environments. These results demonstrate the importance of the preservation of natural environments as repositories of ant fauna.

Agroforestry systems represent the integration of agricultural crops with native vegetation. These systems are of great importance to minimize the agricultural impact in the land through intercropping of these vegetations. Despite of the importance of Chrysidoidea as parasitoids wasps associated with different groups of insects, there is no study comparing the assemblages of these hymenopterans in conventional and agroforestry systems in Brazil. The “Pontal do Paranapanema”, located in the extreme west of the state of São Paulo (Brazil), has historically been occupied by coffee crops and some small areas of agroforestry systems. Therefore, this study aimed to verify the abundance and composition of Chrysidoidea wasp fauna in different conventional coffee crops and agroforestry systems located in this region. To do so, we collected in six different localities in the “Pontal do Paranapanema” using a Malaise trap in each locality with collections occurring monthly between June 2011 and July 2012. A total of 3,623 Chrysidoidea specimens of three families were collected: Bethylidae, with four genera and a total of 3,396 individuals, representing 93.73% of the total collected; Chrysididae with 11 genera and 151 individuals (4.16%), and Dryinidae with five genera and 76 individuals (2.09%). In terms of abundance, the agroforestry was responsible for most of the individuals collected (n = 2029), followed by the conventional systems with 1,406 individuals and the transitional with 188. The most abundant genera were Epyris and Dissomphalus, responsible for about 92% of the total of Chrysidoidea collected. Most of the genera of Chrysididae were collected in the conventional systems alone or in both conventional and agroforestry systems. For Bethylidae and Dryinidae, no genera were found exclusively in the conventional system. It is expected that the structural complexity of each one of the different ecosystems impact directly in the fauna of Chrysidoidea parasitoids associated.

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The Neotropical skipper genus Augiades Hübner, [1819] (Lepidoptera: Hesperiidae) is revised. Neotypes are designated for Hesperia vespasius Fabricius, 1793, and Phareas epimethea Plötz, 1883. Lectotypes are designated for Papilio crinisus Cramer, 1780, and Lignyostola crinisus var. bicolor Mabille & Boullet, 1919. Illustrations of adults and male and female genitalia, distribution maps, and an identification keys are provided for all taxa.

A new species of Enosis Mabille, 1889 from southern Brazil, E. ester Lemes, Mielke & Casagrande sp. nov, is described and illustrated. The new species is closely related to Enosis angularis (Möschler, 1877) but can be distinguishable by a set of characters on wings and male genitalia. An updated geographic distribution for E. angularis is given and illustrations of the female genitalia are provided for the first time.

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It is recorded for the first time in the state of Rio Grande do Sul the occurrence of Scobina melanocephala (Lepeletier, 1823), Scobina thoracica (Jorgensen, 1913) and Scobina poeciloides (Ashmead, 1895), being this last the first record for Brazil. Scobina melanopyga (Klug, 1834) and Scobina torquata (Konow, 1903) were also found in the study. The analyzed material was collected utilizing Malaise traps in tobacco (Nicotiana tabacum L.) fields and is deposited at the Entomological Collection of Santa Cruz do Sul.

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