Class Mammalia Linnaeus, 1758 - mammals Order Chiroptera Blumenbach, 1779 - bats Family Vespertilionidae Gray, 1821 - vespertilionid bats Subfamily Vespertilioninae Gray, 1821 Genus Pipistrellus Kaup, 1829 - pipistrelles Pipistrellus ariel Thomas, 1904 - desert pipistrelle see Hypsugo ariel (Thomas, 1904)