Yuma Myotis

About the Yuma Myotis

The Yuma myotis (Myotis yumanensis) is a species of vesper bat native to western North America. The Yuma myotis is a relatively small myotis, measuring 3.9 to 4.8 cm (1.5 to 1.9 in) in head-body length, with an average wingspan of 24 cm (9.4 in) and a weight of about 6 g (0.21 oz). The simple dental formula of a bat species in the genus Myotis is 2.1.3.33.1.3.3, for a total of 38 teeth. This dental formula applies to Myotis yumanensis as well. Individuals vary in color across their range, and can be anything from dark brown to pale tan, or even greyish. The fur is short and dull, and significantly paler, sometimes even whitish, on the underside of the animal. The tail is 2.7 to 4.0 cm (1.1 to 1.6 in) in length, with only the tip extending beyond the edge of the uropatagium. The calcar is long, extending about 60% of the distance from the ankle to the tail, and, unlike that of many other North American species of Myotis, lacks a keel. The feet are large and broad, and the ears moderately long, with a slim, straight tragus. The head has a short, broad snout, and a rounded cranium.

It is similar to Myotis occultus, but most closely resembles the little brown bat, from... Wikipedia →