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 Nyctophilini Peters, 1865
             Genus Nyctophilus Leach, 1821 - New Guinean and Australian big-eared bats
               Nyctophilus bifax Thomas, 1915 - northern long-eared bat
                 1 [Nyctophilus bifax bifax] Thomas, 1915
                 2 Nyctophilus bifax daedalus Thomas, 1915