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 Eptesicini Volleth & Heller, 1994
             Genus Eptesicus Rafinesque, 1820 - big brown bats
               Subgenus Eptesicus Rafinesque, 1820
                 01 Eptesicus andinus Allen, 1914
                 02 Eptesicus bobrinskoi Kuzyakin, 1935
                 03 Eptesicus bottae (Peters, 1869) - Botta's serotine
                 04 Eptesicus brasiliensis (Desmarest, 1819) - Brazilian brown bat
                 05 Eptesicus chiriquinus Thomas, 1920 - Chiriqui brown bat
                 06 Eptesicus diminutus Osgood, 1915
                 07 Eptesicus dimissus Thomas, 1916
                 08 Eptesicus furinalis (d'Orbigny, 1847) - Argentine brown bat
                 09 Eptesicus fuscus (Beauvois, 1796) - big brown bat
                 10 Eptesicus gobiensis Bobrinskii, 1926
                 11 Eptesicus guadeloupensis Genoways & Baker, 1975 - Guadeloupe brown bat
                 12 Eptesicus hottentotus (Smith, 1833) - long-tailed house bat
                 13 Eptesicus innoxius (Gervais, 1841)
                 14 Eptesicus japonensis Imaizumi, 1953
                 15 Eptesicus kobayashii Mori, 1928
                 16 Eptesicus matroka (Thomas & Schwann, 1905)
                 17 Eptesicus nasutus (Dobson, 1877) - Sind bat
                 18 Eptesicus nilssonii (Keyserling & Blasius, 1839) - northern bat
                 19 Eptesicus pachyotis (Dobson, 1871) - thick-eared bat
                 20 Eptesicus platyops (Thomas, 1901) - Lagos serotine
                 21 Eptesicus serotinus (Schreber, 1774) - serotine
                 22 Eptesicus tatei Ellerman & Morrison-Scott, 1951