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 Vespertilionini Gray, 1821
             Genus Histiotus Gervais, 1856 - big-eared brown bats
               1 Histiotus alienus Thomas, 1916
               2 Histiotus humboldti Handley, 1996
               3 Histiotus laephotis Thomas, 1916
               4 Histiotus macrotus (Poeppig, 1835) - big-eared brown bat
               5 Histiotus magellanicus Philippi, 1866 - southern big-eared brown bat
               6 Histiotus montanus (Philippi & Landbeck, 1861) - small big-eared brown bat
               7 Histiotus velatus (Geoffroy, 1824)