A new population of the endangered Brachyteles arachnoides (É. Geoffroy, 1806) (Primates: Atelidae) in the state of Paraná, southern Brazil

The endangered southern muriquior mono [ Brachyteles arachnoides(E. Geoffroy, 1806)], is a primate endemic to the Atlantic Forest of Brazil. One known extant population is found at the southern limit of its distribution, in the state of Parana, where it is regionally classified as Critically Endangered. Here, we report on a new population in southern Brazil. Additionally, we express our concern about the conservation statusof this species in Parana, because both populations are in small, isolated and unprotected forest fragments.