Ornate titi although some populations have been observed in protected areas, guerilla activity makes it difficult to monitor. Ornate titi The ornate titi ("Plecturocebus ornatus") is a species of titi and is the smallest member of the family Pitheciidae, which also includes uakaris and saki monkeys. As it is a member of this family, it is classified as a type of New World monkey. It is endemic to eastern Colombia, and the only member of the "Plecturocebus moloch" group to occur north of the Rios Amazonas/Solimes/Napo axis, living at least 350 km away from the closest other member, the white-tailed titi ("Plecturocebus
White-eared titi species within the genus "Plecturocebus". Although the exact position of species within the genus "Plecturocebus" in the "P. donacophilus" group with the Rio Beni titi ("P. modestus"), Rio Mayo titi ("P. oenanthe"), Ollala brothers' titi ("P. olallae"), and white-coated titi ("P. 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. The white-eared titi is a medium-sized primate with grey to orange pelage. The species does not exhibit sexual dimorphism; the male's head and body length averages while females