NOVOS REGISTROS COM UMA EXTENSÃO DA DISTRIBUIÇÃO GEOGRÁFICA DE Callicebus cinerascens (SPIX, 1823)

New records of Callicebus cinerascens (Spix, 1823) with an extension of its geographical distribution. The ashy black titimonkey (Callicebus cinerascens; Pri- mates; Pitheciidae) is one of the least known Neotropical primatespecies occurring in the Aripuana-Roosevelt and Tapajos-Juruena interfluves in Brazilian Amazonia. Its distribution limits, especially those to the east and south, remain imprecise. In this paper, based on four independent primatefield sampling, we present several new occurrences in the south of the C. cinerascens' geographic distribution. The knowledge of existing primatesin this area is entirely absent and these recently discovered populations are under severe threat, since the remaining habitats are highly fragmented due to the historical deforestation rates of this area. The results of this study significantly increased the number of records known to C. cinerascens, indicating a considerable extension of the geographical distribution of this taxon. Palavras-chave. Amazonia. Inventario. Novos registros. Primates. Pitheciidae.