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 matroka (Thomas & Schwann, 1905)