Myotis escalerai (Cabrera, 1904)
Vespertilionidae

Least Concern

Description

Medium-sized bat with a total length between 42 and 50 mm, forearm between 36.5 and 43 mm, legs between 6.7 and 10 mm, a tail between 42 and 50 mm, and a weight between 4.5 and 9 g. The fur colouration varies between brownish and grayish tones on the dorsal part and more gray or whitish tones on the ventral part. Juveniles tend to be darker than adults. The face has pinkish tones, almost always without fur around the eyes and muzzle. The ears are quite long (between 15 and 18 mm) with the typical pointed tragus of the Myotis genus.

Together with the Cryptic myotis (Myotis crypticus), it is part of a species complex that was previously included in Natterer's bat (Myotis nattereri), the Natterer's complex. It differs from the Cryptic bat by the double fringe of long and rigid hairs on the edge of the tail membrane (uropatagium), with one fringe being twice as long as the other, and the insertion of the wing to the foot is at the metatarsus.