vieirai

Vieira’s titi monkey, Callicebus vieirai

Vieira’s titi monkey, Callicebus vieirai, was described in 2012 by Gualda-Barros et al., and named to honor Dr. Carlos Octaviano da Cunha Vieira. The type specimen was collected in Matto Grosso, the paratypes in Pará.

Considering its overlapping distribution range with Callicebus moloch and the phenotypical variation of the latter species, we doubt the validity of the new species and suspect it to be a colour morph of C. moloch.