White-eared titi monkey

White-eared titi monkey (Plecturocebus donacophilus) is a titi monkey in the genus Plecturocebus, family Pitheciidae, the New World monkeys that also include the other titis, the sakis and the uakaris. The Mammal Diversity Database credits the species name to (d'Orbigny, 1835) and lists its country distribution as Bolivia and Brazil. Also known as the Bolivian titi or Bolivian gray titi, it ranges east from the Manique River in Beni Department, Bolivia, to southern Rondônia in Brazil, and its range includes forests around the city of Santa Cruz de la Sierra. It is a medium-sized monkey with a grey back, an orange underside and distinctive white ear tufts, with an omnivorous diet of fruit, other plant material and invertebrates. It is monogamous and lives in groups of two to seven, and pairs are known for twining their tails when sitting together. The population is declining, mainly through human-induced habitat loss, although the IUCN classified the species as least concern in 2008 because it has adapted to habitat disturbance and ranges widely. The Mammal Diversity Database gives its IUCN Red List status as Least Concern.