Udzungwa Red ColobusSpecies Name: Piliocolobus gordonorum
The Udzungwa red colobus (Piliocolobus gordonorum), also called the Iringa red colobus or the Uzungwa red colobus is endemic to Tanzania.
Ulindi River Red ColobusSpecies Name: Piliocolobus lulindicus
The Ulindi River red colobus (Piliocolobus lulindicus) is native to the Democratic Republic of the Congo. This Red Colobus species is named after the Ulindi River.
Ursine ColobusSpecies Name: Colobus vellerosus
The white-thighed colobus (Colobus vellerosus), also known as ursine colobus, white-thighed black-and-white colobus, and Geoffroy's black-and-white colobus, is a species of primate in the Cercopithecidae family.
Ursine HowlerSpecies Name: Alouatta arctoidea
The Ursine howler (Alouatta arctoidea) is a species of howler monkey endemic to Venezuela and possibly Colombia. These howlers are famous for their "morning chorus".
Urubamba Brown TitiSpecies Name: Plecturocebus urubambensis
The Urubamba brown titi (Plecturocebus urubambensis) is a species of Titi, a New World monkey native to Peru. This species is found east of the Tambo River and west of the Urubamba, Manú, and Madre de Dios rivers.
Uta Hick’s Bearded SakiSpecies Name: Chiropotes utahicki
Uta Hick's Bearded Saki (Chiropotes utahicki) is an endangered species of bearded saki, a New World monkey species. It was named after Uta Hick, a German primatologist who cared for bearded sakis at Cologne Zoo.
Suggested Reading: Different kinds of monkeys and apes