Juvenile male Aracá uakari held as pet by locals
|Common Name||Ayres Black Uakari|
|Range||northwest Brazilian Amazon.|
This monkey is named after Brazilian biologist José Márcio Ayres, formerly a senior zoologist for the Wildlife Conservation Society. José Márcio Ayres, who died in 2003, pioneered studies in uakaris and played a fundamental role in the creation of the Mamirauá Sustainable Development Reserve, which is of great importance for the Bald uakari.
Very little is known about the Aracá uakari, but based on present knowledge it has the smallest distribution of all species of uakaris (possibly as small as 5,000–6,000 square kilometres (1,900–2,300 sq mi) and is the only not found in any protected area. Although few people live within its very remote distribution, it is hunted; at least seasonally. It has been suggested it should be considered endangered, but it is currently listed as vulnerable by the IUCN.