Fj. Baud et H. Menu, PARAGUAYAN BATS OF THE GENUS MYOTIS, WITH A REDEFINITION OF M-SIMUS (THOMAS, 1901), Revue Suisse de Zoologie, 100(3), 1993, pp. 595-607
Based on measurements and odontology taken from more than 180 specimen
s of Myotis spp. from Paraguay and nearby areas of Argentina and Brazi
l, the systematics of members of this genus is reviewed. Four species
are found in Paraguy : M. nigricans, albescens, levis and ruber. M. si
mus auct. from Bolivia to Argentina in fact refers to various other sp
ecies; it is not found within the borders of Paraguay. This species, i
. e. M. simus, is easily recognizable and seems to be restricted to th
e Amazon basin.