Trachypithecus mauritius (Griffith, 1821)

Russell A. Mittermeier, Anthony B. Rylands & Don E. Wilson, 2013, Cercopithecidae, Handbook of the Mammals of the World – Volume 3 Primates, Barcelona: Lynx Edicions, pp. 550-755 : 743

144.

West Javan Langur

Trachypithecus mauritius

French: Langur de Griffith / German: Westlicher Haubenlangur / Spanish: Langur de Java occidental

Other common names: West Javan Ebony Langur, West Javan Lutung, Western Ebony Langur

Taxonomy. Simia mauritius Griffith, 1821 ,

“Mauritius,” probably W Java. Restricted by D. Brandon-Jones in 1995 to Jasinga.

Until recently, 7" mauritius was considered a subspecies of 1. auratus , but genetic data support a separation at species level. 1" mauritius is closely related to T. cristatus , 1. auratus , 1. germaini , 1. margarita , and 1. selangorensis , and together they form the eristatus species group. Monotypic.

Distribution. W Java (restricted to the N coast W ofJakarta, and inland to Bogor, Cisalak, andJasinga, SW to Ujung Kulon, then along the S coastas far E as Cikaso and possibly Ciwangi).

Descriptive notes. There are no specific measurements available, but the West Javan Langur is probably similar to the East Javan Langur (7 auratus ). Circumfacial hair of the West Javan Langur is erect and forward-curled, facial skin is bluish or blackish, and ears have whitish or yellowish tufts. Females differ from males in having a pale, usually yellowish-white, pubic patch. Jaws and teeth are notably large. Palms and soles are slaty-black. Fur is glossy-black, with a very slight brownish tinge, especially on belly, sideburns, and legs. The West Javan Langur is generally similar to the “black” morph of the East Javan Langur, but it lacks the light-tipped hairs.

Habitat. Remnant primary and secondary dry deciduous, mangrove, beach, freshwater swamp, and hill forests. The West Javan Langur is sympatric with the Javan Langur ( Presbytis comata ).

Food and Feeding. There is no specific information available for this species, but the diet of the WestJavan Langur is presumably similar to that of the East Javan Langur.

Breeding. There is no information available for this species.

Activity patterns. There is no information available for this species.

Movements, Home range and Social organization. There is no information available for this species.

Status and Conservation. CITES Appendix II. Classified as Vulnerable on The IUCN Red List (as 1. auratus mauritius ). The West Javan Langur has been protected by Indonesian law since 1999. Although still widely distributed, its forest habitats are much reduced and fragmented due to agriculture and human settlements. The West Javan Langur is hunted for food and the pet trade. It occurs in Gunung Gede Pangrango, Gunung Halimun Salak, and Ujung Kulon national parks, Cibanteng Nature Reserve, and Cikepuh Game Reserve.

Bibliography. Brandon-Jones (1995b), Groves (2001), Gurmaya et al. (1994), Kool (1992), Maryanto et al. (1997), Nadler et al. (2005), Nijman (2000), Nijman & Supriatna (2008), Roos et al. (2008), Sody (1937a), Watanabe et al. (1996).

Figures

140. Golden Langur (Trachypithecus gee), 141. Capped Langur (Trachypithecus pileatus), 142. Shortridge’s Langur (Trachypithecus shortridgei), 143. East Javan Langur (Trachypithecus auratus), 144. West Javan Langur (Trachypithecus mauritius), 145. Silvered Langur (Trachypithecus cristatus), 146. Selangor Silvery Langur (Trachypithecus selangorensis), 147. Germain’s Langur (Trachypithecus germaini), 148. Annamese Langur (Trachypithecus margarita)

Distribution. W Java (restricted to the N coast W ofJakarta, and inland to Bogor, Cisalak, andJasinga, SW to Ujung Kulon, then along the S coastas far E as Cikaso and possibly Ciwangi).