Class Mammalia Linnaeus, 1758 - mammals
Subclass Theria Parker & Haswell, 1897
Order Chiroptera Blumenbach, 1779 - bats
Family Vespertilionidae Gray, 1821 - vespertilionid bats
Subfamily Vespertilioninae Gray, 1821
Tribe Eptesicini Volleth & Heller, 1994
Genus Eptesicus Rafinesque, 1820 - big brown bats
Subgenus Eptesicus Rafinesque, 1820
Eptesicus brasiliensis (Desmarest, 1819) - Brazilian brown bat
Eptesicus brasiliensis thomasi Davis, 1966