Abstract
Scarabaeinae (Coleoptera: Scarabaeidae), comprises the beetles popularly called “dung beetle”, which are important group of animal detritivorous and biomarkers of environmental impacts on ecosystems. Pampa Biome areas are natural ecosystems with high diversity of plant and animal species, but are however, little known compared to other biomes of Brazil. Data on escarabeinofauna the Pampa Biome is scarce. Therefore, the aim of this study was to inventorize the fauna of these beetles in areas located in the far south of the Rio Grande do Sul, as well as learning their habits and eating behaviors. The sampling areas were located in the cities of Herval and Arroio Grande. 216 traps baited pitfall trap type with human dung and pig and beef decaying were placed distributed in six areas. They recorded 2,243 individuals, organized into six tribes, 13 genera and 35 species. The species were classified as coprophagous, general and scavenger. Greater number of subjects were caught in traps baited with human and pig manure than in rotting meat. For the first time Trichillum morelli Verdu & Galante, 1997 was found in Brazil and Canthidium taurinum Harold, 1867 is a new record for the state.
Highlights
Scarabaeinae (Coleoptera: Scarabaeidae), comprises the beetles popularly called “dung beetle”, which are important group of animal detritivorous and biomarkers of environmental impacts on ecosystems
the aim of this study was to inventorize the fauna of these beetles in areas located in the far south
The sampling areas were located in the cities of Herval
Summary
Área de Estudo As áreas de amostragem (Tabela 1) abrangem a porção sul do Bioma Pampa no Rio Grande do Sul, pertencentes aos municípios de Herval e Arroio Grande (Figura 1). Foram selecionadas seis áreas de campos naturais (vegetação nativa) sem perturbação, com pecuária extensiva (lotação de bovinos) onde havia também presença de equinos e ovinos. O extremo-sul do estado caracteriza-se por apresentar áreas de formações campestres naturais com altitude variando de 60 a 350 m. As amostras foram obtidas de seis áreas com distância mínima de 2 km. As áreas pertencentes ao município de Arroio Grande (A1, A2 e A3) distanciaram-se 50 km Tabela 1 - Coordenadas geográficas das áreas de coletas selecionadas para o inventariamento das espécies de besouros Scarabaeinae em campos do sudeste do Rio Grande do Sul, Brasil. Scarabaeinae in southeastern fields of Rio Grande do Sul, Brazil
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