Mass: 17.2 g based on Layne 1958, Kunz 1965, Veilleux et al. 2008, Geluso 1978, Black 1974, Feldhamer et al. 2009, Gould 1955, and López Gonzâlez and García Mendoza 2006

Diet: insectivore based on Gould 1955, Freeman 1981, Ochoa et al. 2000, Van Cakenberghe et al. 2002, Adams et al. 2003, Lacki et al. 2007, Freeman and Lemen 2010, and de la Peña-Cuéllar et al. 2012

Abundance: 0.00 to 85.80% (median 11.40%)

Latitudinal range: 19.9° to 49.6°

Habitats: (10), desert/xeric shrubland (4), temperate broadleaf/mixed forest (16), temperate coniferous forest (5), temperate savanna (3), tropical/subtropical coniferous forest (1), tropical/subtropical moist broadleaf forest (1), tropical/subtropical savanna (1)

Found in 41 samples

Canada: Nelson, Caverne de la Mine (upper infill) (Holocene)

Mexico: La Ascension, Misantla (bats, dry season), San Luis de la Paz

United States: Ledges State Park, Lower Honey Creek, McHose Park, Acadia National Park, White Spot Spring, State Fish Hatchery, McKittrick Canyon (1968), McKittrick Canyon (1970), Nogal Canyon, Ouachita National Forest, Canoe Creek State Park, Blue Mountain (East Tunnel), Palo Duro Canyon State Park (2006), Indigo Tunnel, Ash Meadows National Wildlife Refuge (summer 2008), Wise County, Pisgah State Park, Rocky Mountain Arsenal National Wildlife Refuge, Nolands Fork River, Kelly Pond (2009), Morgan-Monroe and Yellowwood State Forests, White Mountain National Forest, West of Boulder, Prairie Creek (1997), Prairie Creek (1998), Fontenelle Forest Nature Center, Badlands National Park, Zesch Cave (Late Pleistocene), Vess Cave (Late Pleistocene), Bat Cave (Late Pleistocene), Robinson Cave (Late Pleistocene), Meyer Cave (Holocene), Bootlegger Sink (Pleistocene - Holocene), Schulze Cave (layer C1) (Late Pleistocene), Natural Chimneys (Late Pleistocene), Cumberland Cave (Middle Pleistocene)

body mass	18.1 g	N = 10	Layne 1958
body mass	17.2 g	N = 33	Layne 1958
♀ body mass	9.9 g	N = 1	Kunz 1965
♀ body mass	12.3 g	N = 1	Kunz 1965
♀ body mass	23.9 g	N = 4	Veilleux et al. 2008
♀ body mass	18.5 g	N = 3	Veilleux et al. 2008
♀ body mass	17.8 g	N = 2	Veilleux et al. 2008
♂ body mass	13.4 g	N = 10	Geluso 1978
♂ body mass	11.3 g	N = 1	Kunz 1965
♂ body mass	15.6 g	N = 31	Veilleux et al. 2008
body mass	22.21 g	N = 10	Black 1974
body mass	19.50 g	N = 29	Feldhamer et al. 2009
body mass	18.9 g	N = 1	Gould 1955
body mass	14.9 g	N = 11	López Gonzâlez and García Mendoza 2006
♀ ear length	17.6 mm	N = 10	Layne 1958
♂ ear length	16.8 mm	N = 5	Layne 1958
♀ forearm length	47.3 mm	N = 10	Layne 1958
♂ forearm length	47.2 mm	N = 5	Layne 1958
♀ hind foot length	10.3 mm	N = 10	Layne 1958
♂ hind foot length	9.0 mm	N = 5	Layne 1958
♀ tail length	46.0 mm	N = 10	Layne 1958
♂ tail length	44.4 mm	N = 5	Layne 1958
♀ total body length	120.6 mm	N = 10	Layne 1958
♂ total body length	110.8 mm	N = 5	Layne 1958

See also Eptesicus, Eptesicus andinus, Eptesicus brasiliensis, Eptesicus campanensis, Eptesicus chiriquinus, Eptesicus diminutus, Eptesicus furinalis, Eptesicus gobiensis, Eptesicus grandis, Eptesicus hottentotus, Eptesicus nilssonii, Eptesicus serotinus, Eptesicus sp.