Caquetá titi agricultural activity, and dispersal is hazardous since it must cross open savanna or barbed wire in order to reach new nearby forest fragments. The species has a geographic range of just about and actually occupies only about within that range. All 13 groups studied consisted of a single adult male, a single adult female and between one and four immature monkeys. Average group size, including adults and immatures, was 4.1 monkeys. This is consistent with other titi monkey species, which form small, cohesive groups led by a bonded pair of adults. Like other titi monkey species, they are monogamous and
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