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 Nycticeinops Hill & Harrison, 1987 - Schlieffen's twilight bat
               1 Nycticeinops schlieffeni (Peters, 1859)