Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Chiroptera Blumenbach, 1779 - bats
       Family Molossidae Gervais, 1856 - free-tailed bats and mastiff bats
         Subfamily Molossinae Gervais, 1856
           Genus Eumops Miller, 1906 - mastiff bats, bonneted bats
             Eumops underwoodi Goodwin, 1940 - Underwood's mastiff-bat
               1 [Eumops underwoodi underwoodi] Goodwin, 1940
               2 Eumops underwoodi sonoriensis Benson, 1947