White-eared Titi - Taxonomy

Taxonomy

The white-eared titi belongs to the New World monkey family Pitheciidae, which contains the titis (Callicebus), saki monkeys (Pithecia), bearded sakis (Chiropotes), and uakaris (Cacajao). It is a member of the subfamily Callicebinae, of which the only extant genus is Callicebus, containing all of the titi monkeys.

Although the exact position of species within the Callicebus genus is debated, the white-eared titi has been placed within the subgenus Callicebus in the C. donacophilus group with the Rio Beni titi (C. modestus), Rio Mayo titi (C. oenanthe), Ollala Brothers' titi (C. olallae), and white-coated titi (C. pallescens). The white-coated titi has sometimes been considered a subspecies of the white-eared titi, but they are treated as separate species in the latest edition of Mammal Species of the World.