Order Chiroptera - Family Vespertilionidae Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 1 451 529 book chapter 0-8018-8221-4 10.5281/zenodo.7316519 Eptesicini Volleth and Heller 1994 Eptesicini Volleth and Heller 1994 , Z. Zool. Syst. Evolut.-forsch, 32: 24 . Genera: 3 genera with 33 species: Genus Arielulus Hill and Harrison 1987 (5 species) Genus Eptesicus Rafinesque 1820 (23 species with 51 subspecies) Genus Hesperoptenus Peters 1868 (5 species) Discussion: Includes Arielulus , Eptesicus , and Hesperoptenus ; see Volleth and Heller (1994) and Volleth et al. (2001) .