Class [Mammalia] Linnaeus, 1758 - mammals
   Order Chiroptera Blumenbach, 1779 - bats
     Suborder Microchiroptera Dobson, 1875 see Order Chiroptera Blumenbach, 1779
       Family Vespertilionidae Gray, 1821 - vespertilionid bats
         Subfamily Vespertilioninae Gray, 1821
           Genus Myotis Kaup, 1829 - mouse-eared bats
             Subgenus Myotis Kaup, 1829 see Genus Myotis Kaup, 1829
               Myotis altarium Thomas, 1911