Back سيمياس كونكولور ARZ Tekudol (Simias concolor) AVK Свинеопашат лангур Bulgarian Rinopitec de cua de porc Catalan Simias concolor CEB Kahau mentavejský Czech Pageh-Stumpfnase German Simias concolor Spanish Simias concolor Basque دم‌خوکی Persian

Pig-tailed langur

Pig-tailed langur
X-ray image of the skull of a pig-tailed langur
CITES Appendix I (CITES)[2]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Suborder: Haplorhini
Infraorder: Simiiformes
Family: Cercopithecidae
Subfamily: Colobinae
Tribe: Presbytini
Genus: Simias
Miller, 1903
Species:
S. concolor
Binomial name
Simias concolor
Miller, 1903
Pig-tailed langur range

The pig-tailed langur (Simias concolor), monotypic in genus Simias, is a large Old World monkey, endemic to several small islands off the coast of Sumatra in Indonesia. Its face is black, its fur is black-brown and it has a relatively short tail. It is a diurnal species, feeding in the rainforest canopy on leaves, and to a lesser extent, fruit and berries. Little is known of its natural history, but it is heavily hunted, its populations have been declining rapidly and the International Union for Conservation of Nature has assessed its conservation status as being "critically endangered".[3] It has been included on a list of the World's 25 Most Endangered Primates.[4]

As an arboreal primate the pig-tailed langur spends most of its time in the canopy devoting the majority of its activity budget towards resting and feeding.[5] The structure of groups is single-male, multi-female. Group sizes range from around 3 to 9 individuals depending on locations and hunting pressures.[6][7] There are two subspecies of this primate, Simias concolor concolor which lives in the southern Mentawai islands, and Simias concolor siberu which lives exclusively in the northern island of Siberut.[8] Sexual dimorphism and sexual swelling is exhibited by this species.[9][7]

Population estimates from the 1980s compared to data from the 2000s show a decrease in population size.[10][11] The northern island of Siberut shows a greater abundance of this species in comparison to the southern Mentawai islands. This can largely be attributed to the difference in conservation efforts as much of northern Siberut has been declared a national park whereas the southern islands have historically been devastated by commercial logging.[8] This species is subject to hunting by local inhabitants. The reduction in forest cover has allowed for greater levels of human activity and settlement which facilitates hunting, especially in the southern islands where most areas are unprotected.[12][8]

  1. ^ Quinten, M.; Setiawan, A.; Cheyne, S.; Traeholt, C.; Whittaker, D. (2020). "Simias concolor". IUCN Red List of Threatened Species. 2020: e.T20229A17953422. doi:10.2305/IUCN.UK.2020-2.RLTS.T20229A17953422.en. Retrieved 19 November 2021.
  2. ^ "Appendices | CITES". cites.org. Retrieved 2022-01-14.
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