Order Primates Author Colin P. Groves text 1993 Smithsonian Institution Press Washington and London Editor Don E. Wilson Editor DeeAnn M. Reeder Mammal Species of the World (2 nd Edition) 243 277 book chapter 193461 10.5281/zenodo.7353122 0df816bd-0cef-463a-94c2-b03e13ea7128 1-56098-217-9 7353122 Pygathrix bieti Milne-Edwards, 1897 . Bull. Mus. Hist. Nat. Paris, 3:157 . TYPE LOCALITY: China , Yunnan , left bank of upper Mekong, Kiape, 28°25'N , 98°55'E , a day's journey south of Atentse . DISTRIBUTION: Mountains of left bank of upper Mekong ( China ). STATUS: CITES - Appendix I; U.S. ESA and IUCN - Endangered. COMMENTS: Regarded by Groves (1970:569) as a subspecies of roxellana , but regarded as a full species by Peng et al. (1988) .