Aracá uakari

Aracá uakari (Cacajao ayresi) is a uakari in the genus Cacajao, family Pitheciidae, the New World monkeys that also include the other titis, the sakis and the uakaris. The Mammal Diversity Database credits the species name to Boubli, M. N. F. da Silva, Amado, Hrbek, Pontual, & Farias, 2008 and lists its country distribution as Brazil. Also known as the Ayres black uakari, it is a newly described monkey from the northwest Brazilian Amazon, found by Jean-Phillipe Boubli after following native Yanomamo hunters along the Rio Aracá, and described in 2008 together with the Neblina uakari. It is named after the Brazilian biologist José Márcio Ayres. It has the smallest distribution of any uakari, possibly as small as 5,000 to 6,000 square kilometres, and is the only one not found in any protected area, and it is hunted at least seasonally. Some authors have proposed treating it as a subspecies of the black-headed uakari. The Mammal Diversity Database gives its IUCN Red List status as Least Concern.