Myotis simus Thomas, 1901 . Ann. Mag. Nat. Hist., ser. 7, 7:541.

TYPE LOCALITY: Peru, Loreto, Sarayacu (Ucayali River) .

DISTRIBUTION: Colombia, Ecuador, Peru, N Brazil, Bolivia, Paraguay, NE Argentina.

COMMENTS: Subgenus Leuconoe . Revised by La Vai (1973a).