RESUMO Uma listagem das espécies de Hippoboscidae, Nycteribiidae e Streblidae, seus hospedeiros e localidades no estado de Mato Grosso do Sul, baseada em dados de literatura e no acervo de coleções científicas, é apresentada. Cinquenta e três espécies são registradas, sendo Xenotrichobius noctilionis Wenzel, 1976 reportada pela primeira vez no Brasil.

ABSTRACT A checklist of the species of Hippoboscidae, Nycteribiidae and Streblidae and their hosts and localities in the state of Mato Grosso do Sul, based on literature and specimens deposited in scientific collections, is presented. Fifty-three species are recorded, being Xenotrichobius noctilionis Wenzel, 1976 reported for first time in Brazil.

Streblidae flies are specialised parasites of bat hosts, mainly phyllostomids. There is a high richness of streblids in the savannah-like Cerrado region; however, there is little quantitative data available in parasitological indices. Here, we describe the component community, prevalence and intensity of a streblid infestation on a phyllostomid bat assemblage in Serra da Bodoquena, a Cerrado region in Southwest Brazil. We conducted surveys by capturing and inspecting bat hosts during the seven-month period between October 2004-December 2005. All the ectoparasites found on the bats were collected in the field and then counted and identified in the laboratory. We captured 327 bats belonging to 13 species, of which eight species were parasitized by 17 species of streblids. Carollia perspicillata and Glossophaga soricina were infested with seven streblid species, whereas the other bat species were infested with four or fewer streblid species. Megistopoda proxima and Aspidoptera falcata flies were found on Sturnira lilium, and Trichobius joblingi was the most prevalent fly on C. perspicillata. Megistopoda aranea and Aspidoptera phyllostomatis were highly prevalent and had a high intensity of infestation on Artibeus planirostris. Overall comparisons of the available data suggest that the component communities of streblids vary more between the Cerrado and Atlantic Forest phytogeographical regions than between localities within the same phytogeographical region.