Class Mammalia Linnaeus, 1758 - mammals Order Chiroptera Blumenbach, 1779 - bats Family Vespertilionidae Gray, 1821 - vespertilionid bats Subfamily Vespertilioninae Gray, 1821 Genus Eptesicus Rafinesque, 1820 - big brown bats Eptesicus serotinus (Schreber, 1774) - serotine