Lang's red colobus

Lang's red colobus, Piliocolobus langi, is a red colobus monkey that lives in lowland rainforest in the northeastern part of the Democratic Republic of the Congo, between the Lualaba River and the Aruwimi-Ituri River. It was historically treated as a subspecies of the Central African red colobus, Piliocolobus foai, but more recent taxonomies generally treat it as a separate species. It eats leaves, fruit, flowers, buds and possibly seeds. Males have a head and body length of about 50 cm and a tail of about 66.5 cm, while females measure about 48.5 cm with a tail of 44 to 66.5 cm. Males weigh about 9 kg and females about 7.7 kg.