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Rhinopithecus bietiMilne-Edwards, 1897 is 1 of the largest and most northerly colobine monkeys. It lives at the highest recorded elevations for a nonhuman primate, 2,625–4,700 m. It has a restricted range between the Yangtze and Mekong Rivers in Yunnan and Xizang (Tibet) Provinces, mainland of China, in 15–20 groups comprising 6 isolated populations. It lives in multimale-multifemale bands of up to 480 individuals comprising cohesive 1-male units of < 20 individuals in nonoverlapping home ranges. Bands may have 1 or more all-male units. Mating and parturition are seasonal. With a total population of about 3,500, it is 1 of the most endangered primates and is listed as “Endangered” by the International Union for Conservation of Nature and Natural Resources.
Version of Record, first published online October 5, 2018, with fixed content and layout in compliance with Art. 22.214.171.124 ICZN