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) pileatus (Blyth 1843) [Semnopithecus] pileatus Blyth 1843 , J. Asiat. Soc. Bengal, 12: 174 . Type Locality: India , Assam . Vernacular Names: Capped Langur . Subspecies: : Subspecies Trachypithecus (Trachypithecus) pileatus subsp. pileatus Blyth 1843 Subspecies Trachypithecus (Trachypithecus) pileatus subsp. brahma Wroughton 1916 Subspecies Trachypithecus (Trachypithecus) pileatus subsp. durga Wroughton 1916 Subspecies Trachypithecus (Trachypithecus) pileatus subsp. tenebricus Wroughton 1915 Distribution: Assam, NW Burma (west of Chindwin River); E Bangladesh . Conservation: CITES – Appendix I; U.S. ESA – Endangered; IUCN – Endangered as T . p. pileatus , T . p. brahma , T . p. durga , and T . p. tenebricus . Discussion: T. pileatus species group. Does not include shortridgei (see Groves, 2001 c ).