| abstract | A small collection of parasitic mites (Acari), taken from marsupials and rodents from two ecological stations in the State of Minas Gerais, Brazil, is studied. The mites belong to three families (Myobiidae, Listrophoridae and Atopomelidae), seven genera and nine species. This collection includes a new genus and two new species: Metachiroecius brasiliensis n.g., n.sp. and Didelphoecius validus n.sp., both from Metachirus nudicaudatus (Desmarest). The subgenus Prolistrophorus (Aprolistrophorus) Fain, 1980, is raised here to the genus rank. |