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 Nycticeiini Gervais, 1855
             Genus Nycticeius Rafinesque, 1819 - evening bats
               Nycticeius humeralis (Rafinesque, 1818) - evening bat
                 1 [Nycticeius humeralis humeralis] (Rafinesque, 1818)
                 2 Nycticeius humeralis mexicanus Davis, 1944
                 3 Nycticeius humeralis subtropicalis Schwartz, 1951