White winged vampire bat

The white-winged vampire bat (Diaemus youngi), a species of vampire bat, is the only member of the genus Diaemus. They are found from Mexico to northern Argentina and are present on the islands of Trinidad and Margarita.
Their fur is clay-colored, light brown, or dark cinnamon brown. The outline of their wings is white, as well as the membrane between their second and third finger. Their ears are longer than they are wide, at 18 mm (0.71 in) long. The anterior surface of the tragus is hairy, and its outer margin is smooth, unlike that of the common vampire bat, which is serrated. Their thumb is much shorter than that of the common vampire bat. Their forearms are 51–54 mm (2.0–2.1 in) long. The calcar is absent.