Map of part of South America illustrating localities for Myotis midastactus (stars), M. simus (circles), M. simus-like and other undetermined specimens (both represented by triangles). Type localities of M. midastactus (loc 1), M. guaycuru (loc 5), and M. simus (loc 16) are represented by symbols with white marks in the centre. See Supplementary material for localities and their geographical coordinates.