Abstract
The genus Scinax contains 129 species divided in two clades: the S. catharinae clade and the S. ruber clade. The S. ruber clade harbors the S. duartei species complex, that comprises four treefrog species endemic of Brazil. Two of these species, S. duartei and S. caldarum, are morphologically very similar species that have never been compared directly in taxonomic works. The lack of a …