Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Chiroptera Blumenbach, 1779 - bats
       Family Rhinolophidae Gray, 1825 - horseshoe bats
         Genus Rhinolophus Lacépède, 1799 - horseshoe bats
           Rhinolophus megaphyllus species group
             Rhinolophus keyensis Peters, 1871 - insular horseshoe bat
               1 [Rhinolophus keyensis keyensis] Peters, 1871
               2 Rhinolophus keyensis amiri Kitchener, 1995
               3 Rhinolophus keyensis parvus Goodwin, 1979
               4 Rhinolophus keyensis simplex Andersen, 1905