Trachypithecus (Trachypithecus) laotum Thomas 1911
Trachypithecus (Trachypithecus) laotum Thomas 1911, Ann. Mag. Nat. Hist., ser. 9, 7: 181.
Type Locality: Laos, Ban Na São, on the Mekong at 17°30’N.
Vernacular Names: Laotian Langur.
Distribution: C Laos.
Conservation: CITES – Appendix II; U.S. ESA – Endangered as included in T. francoisi; IUCN – Data Deficient.
Discussion: T. francoisi species group. Considered a species separate from francoisi by Brandon-Jones (1995).