classified as Vulnerable by the Brazilian environmental authorities. In this paper, we report
two new records from an Amazonia-Cerrado ecotone that extend the range of the species
further south to the Brazilian state of Mato Grosso. Additionally, we obtained an ecological
niche model (ENM) for S… There are some species of Amazonian primates that occur in
similar habitats as S. niger but are found further south than the southernmost localities …