This species has recently been given its own species status.  Originally it was considered a subspecies but now 2 species are recognised – Myotis levis and Myotis dinelli.

This is quite a large Myotis and can be distinguished from other Myotis by the large forearm and the pale border around the uropatagium.

This specimen was captured in the province of Buenos Aires, but is also found in Corrientes.