Eight streblid species were collected from eight phyllostomid bat species, from April to November 1997, at or near the Reserve "Parque Estadual do Rio Doce", Minas Gerais, Southeastern Brazil. In total, 48 specimens of streblid were removed from 57 phyllostomid bats. Most of batflies species were associated with a single species of the host, and only Paratrichobius longicrus
(Miranda Ribeiro) and Trichobius joblingi
Wenzel were recorded on three bat species. Trichobius lonchophyllae
Wenzel represents a new record for the Brazilian Southeastern region.