The rare red uakari monkeys (Cacajao calvus) are found in the north in swamp forests.    From Wordnik.com.  [Southwest Amazon moist forests] Reference

A new primate, a uacari species, has been discovered in northwestern Amazonia, and described as Cacajao ayresii.    From Wordnik.com.  [Archive 2008-01-01] Reference

The Mamirauá Reserve is home to the two narrow endemics, white uakari monkeys (Cacajao calvus calvus) and blackish squirrel monkeys (Saimiri vanzolinii).    From Wordnik.com.  [Purus varzea] Reference

The mammals include long-tounged bat Scleronycteris ega (VU), two endemic primates, the white uakari monkey Cacajao calvus calvus which is found only within the Reserve and the blackheaded squirrel monkey Saimiri vanzolinii.    From Wordnik.com.  [Central Amazonian Conservation Complex, Brazil] Reference

Terrestrial mammal diversity is smaller because the habitat is often flooded; two narrow endemic primates inhabit this region, the white uakari monkeys (Cacajao calvus calvus) and blackish squirrel monkeys (Saimiri vanzolinii).    From Wordnik.com.  [Purus varzea] Reference

The nine primates include howler monkeys Alouatta seniculus, night monkeys Aotus trivirgatus, titi monkeys Callicebus torquatus, black uakari Cacajao melanocephalus, weeper capuchins Cebus olivaceus, and white-faced sakis Pithecia pithecia.    From Wordnik.com.  [Canaima National Park, Venezuela] Reference

This number includes 9 primates that live here including howler monkeys (Alouatta seniculus), night monkeys (Aotus trivirgatus), titi monkeys (Callicebus torquatus), black uakari (Cacajao melanocephalus), weeper capuchins (Cebus olivaceus), and white-faced sakis (Pithecia pithecia).    From Wordnik.com.  [Tepuis] Reference

Primates that live in young floodplain forests include various species of spider monkeys (Ateles spp.), two capuchins (Cebus albifrons, C. apuella), red howler monkeys (Alouatta seniculus), squirrel monkeys (Saimiri sciureus), and the endangered red uakari monkeys (Cacajao calvus) in swamp forests.    From Wordnik.com.  [Iquitos varzea] Reference

The few species that are mainly restricted to this ecoregion include the endemic black uakari monkeys (Cacajao melanocephalus) and bearded sakis (Chiropotes satanas), opossums (Marmosops impavidus), bats (Micronycteris pusilla, Phyllostomus latifolius, Platyrrhinus aurarius), and several rodents (Neusticomys venezuelae, Rhipidomys macconnelli, Cavia guianae, and Proechimys simonsi).    From Wordnik.com.  [Negro-Branco moist forests] Reference

Mammals that have a restricted distribution include various primates such as white-faced sakis (Pithecia pithecia), black uakari monkeys (Cacajao melanocephalus), black spider monkeys (Ateles paniscus), tamarins (Saguinus inustus), bats (Diclidurus isabellus, Lonchorhina marinkellei, Micronycteris pusilla, Scleronycteris ega, Vampyressa brocki), and rodents, such as Brazilian squirrels (Sciurus gilvigularis), rats (Akodon urichi), porcupines (Coendou melanurus), and spiney rats (Proechimys semispinosus).    From Wordnik.com.  [Rio Negro campinarana] Reference