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 Hypsugo Kolenati, 1856
               Hypsugo savii (Bonaparte, 1837)
                 1 [Hypsugo savii savii] (Bonaparte, 1837)
                 2 Hypsugo savii austenianus (Dobson, 1871)
                 3 Hypsugo savii caucasicus (Satunin, 1901)
                 4 Hypsugo savii ochromixtus (Cabrera, 1904)