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 Hesperoptenus Peters, 1868
               1 Subgenus Hesperoptenus Peters, 1868
               2 Subgenus Milithronycteris Hill, 1976