Nomascus leucogenys (Ogilby 1840)

Wilson, Don E. & Reeder, DeeAnn, 2005, Order Primates, Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 1, Baltimore: The Johns Hopkins University Press, pp. 111-184 : 180

Nomascus leucogenys (Ogilby 1840)

[Hylobates] leucogenys Ogilby 1840 , Proc. Zool. Soc. Lond., 1840: 20.

Type Locality: Laos, Muang Khi ( Fooden, 1987).

Vernacular Names: Northern White-cheeked Gibbon.

Distribution: SW Yunnan ( China) to 19°N in Vietnam and Laos.

Conservation: CITES – Appendix I; U.S. ESA and IUCN – Endangered.

Discussion: Separated from concolor by Dao (1983) and Ma and Wang (1986).