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Search results for "vespertilionidae"





Western Pipistrelle (Pipistrellus hesperus)
Order: Chiroptera, Family: Vespertilionidae
A small, drab-gray or smoke-gray bat with distinct, black, leathery facial mask and black membranes; tragus short, blunt, and slightly curved; underparts pale smoke-gray. Dental formula: I 2/3, C 1/1, Pm 2/2, M 3/3 X 2 = 34. External measurements average: (males), total length, 66 mm; tail, 27 mm; foot, 5 mm; forearm, 28 mm; (females), 73-30-5-28. Weight, 3-6 g.
Rate:  (4.2)
Location: Birds & Bats
Silver-haired Bat (Lasionycteris noctivagans)
Order: Chiroptera, Family; Vespertilionidae
A medium-sized, nearly black bat with dorsal surface of interfemoral membrane densely furred at least on the basal half and usually to near margins; upper and lowerparts sooty brown or black with white tips of hairs producing a frosted appearance; membranes and ears sooty brown or black. Dental formula: I 2/3, C 1/1, Pm 2/3, M 3/3 X 2 = 36 (upper incisors and first lower premolar very small and easily overlooked). External measurements average: total length, 100 mm; tail, 40 mm; hind foot, 8 mm; ear, 16 mm; forearm, 41 mm. Weight, 8-12 g.
Rate:  
Location: Birds & Bats