Callicebus cupreus "DSC_0083" by Unnormalized via Flickr, Creative Commons Attribution ShareAlike.	Callicebus moloch "Dusky Titi (Callicebus moloch)" by Brian.gratwicke via Flickr, Creative Commons Attribution.
White-faced saki, Pithecia pithecia "Witgezichtsaki" by Jeroen Kransen via Flickr, Creative Commons Attribution ShareAlike.

Taxonomy:

Gen. Callicebus (Add)

Callicebus (Callicebus) (Add)

Callicebus aureipalatii (Add)
Callicebus baptista (Add)
Callicebus barbarabrownae (Add)
Callicebus bernhardi (Add)
Callicebus brunneus (Add)
Callicebus caligatus (Add)
Callicebus cinerascens (Add)
Callicebus coimbrai (Add)
Callicebus cupreus

Callicebus discolor (Add)
Callicebus donacophilus (Add)
Callicebus dubius (Add)
Callicebus hoffmannsi (Add)
Callicebus melanochir (Add)
Callicebus modestus (Add)
Callicebus moloch

Callicebus nigrifrons (Add)
Callicebus oenanthe (Add)
Callicebus olallae (Add)
Callicebus ornatus (Add)
Callicebus pallescens (Add)
Atlantic titi, Callicebus personatus (Add)
Callicebus stephennashi (Add)

Callicebus (Torquatus) (Add)

Callicebus lucifer (Add)
Callicebus lugens (Add)
Callicebus medemi (Add)
Callicebus purinus (Add)
Callicebus regulus (Add)
Callicebus torquatus (Add)

Gen. Cacajao (Add)

Aracá uakari, Cacajao ayresi (Add)
Bald uakari, Cacajao calvus (Add)
Neblina uakari, Cacajao hosomi (Add)
Black-headed uakari, Cacajao melanocephalus (Add)

Gen. Chiropotes (Add)

White-nosed saki, Chiropotes albinasus (Add)
Chiropotes chiropotes (Add)
Brown-backed bearded saki, Chiropotes israelita (Add)
Chiropotes satanas (Add)
Uta Hick's bearded saki, Chiropotes utahickae (Add)

Gen. Pithecia (Add)

Equatorial saki, Pithecia aequatorialis (Add)
White-footed saki, Pithecia albicans (Add)
Rio Tapajós saki, Pithecia irrorata (Add)
Monk saki, Pithecia monachus (Add)
White-faced saki, Pithecia pithecia