Trachypithecus (Trachypithecus) delacouri Osgood 1932
Trachypithecus (Trachypithecus) delacouri Osgood 1932, Field Mus. Nat. Hist. Zool., 18: 205.
Type Locality: Vietnam, Hoi Xuan.
Vernacular Names: Delacour's Langur.
Distribution: Vietnam south of Red River, 18°- 21°36’N.
Conservation: CITES – Appendix II; U.S. ESA – Endangered as included in T. francoisi; IUCN – Critically Endangered.
Discussion: T. francoisi species group. Considered a species separate from francoisi by Brandon-Jones (1995).