Order Primates Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 1 111 184 book chapter 0-8018-8221-4 10.5281/zenodo.7316519 Trachypithecus (Trachypithecus) ebenus Brandon-Jones 1995 Trachypithecus (Trachypithecus) ebenus Brandon-Jones 1995 , Raffles Bulletin of Zoology, 43: 15 . Type Locality: "Indo China ": probably either Lai Chau or Fan Si Pan chain (ca. 22°30’N , 103°50’E ) according to Brandon-Jones (1995) . Vernacular Names: Indochinese Black Langur . Distribution: Unknown. May be restricted to region of type locality ( Brandon-Jones, 1995 ); but apparently occurs in Hin Namno National Biodiversity Conservation area, Laos , on Vietnam border at about 17°30’N according to Nadler (1998) . Conservation: CITES – Appendix II; IUCN – Data Deficient as T. francoisi ebenus . Discussion: T. francoisi species group. Described as a subspecies of T. auratus by Brandon-Jones (1995) , but raised to species rank and transferred to the T. francoisi group by Groves (2001 c ) .