A new species of small Eptesicus Rafinesque (Chiroptera: Vespertilionidae) from northern South America.

Eptesicus diminutus Osgood, 1915 is the smallest species of the subgenus Eptesicus found in South America. It has a discontinuous distribution, with northern populations in Colombia and Venezuela, and southern populations in Argentina, Brazil, Paraguay, and Uruguay. We reviewed specimens assigned to the northern populations of E.