Callicebus

Callicebus is a genus of monkeys known as titi monkeys.

Historically, titis were monogeneric, comprising only the genus Callicebus <small>Thomas, 1903</small>. Owing to the great diversity found across titi monkey species, a new genus-level taxonomy was recently proposed that recognises three genera within the subfamily Callicebinae; Cheracebus <small>Byrne et al., 2016</small> for the species of the torquatus group (Widow titis); Plecturocebus <small>Byrne et al., 2016</small> for the Amazonian and Chaco titis of the moloch and donacophilus groups; and Callicebus <small>Thomas, 1903</small> sensu stricto, for species of the Atlantic Forest personatus group.

In 2014, a previously unknown orange Callicebus was spotted in the Peruvian Amazon; it has not been determined whether this constitutes a color variant or a new species.

Species

There are 5 species in this genus:

• Barbara Brown's titi monkey, Callicebus barbarabrownae
• Coimbra Filho's titi monkey, Callicebus coimbrai
• Coastal black-handed titi monkey, Callicebus melanochir
• Black-fronted titi monkey, Callicebus nigrifrons
• Atlantic titi monkey, Callicebus personatus

References