Argentinean Myotis (Chiroptera, Vespertilionidae), including the description of a new species from the Yungas

Myotis is the most speciose genus of mammals in world and recent taxonomic revisions have revealed an impressive diversity species South America. Even so, phenotypic conservatism some taxa makes delimitation difficult. We perform a review from Argentina based on qualitative quantitative morphological characters. Our results confirm occurrence 12 ( M. albescens , chiloensis dinellii izecksohni keaysi lavali levis nigricans oxyotus riparius ruber cf. simus) additional new for Yungas Forest. The small to medium (forearm length ~ 35 mm) can be distinguished its congeners by set characters that includes forearm length, cranial measurements, discrete craniodental characters, fur color. This does not exhaust need systematic studies with Argentinean considering possibility great variation found complex taxa.