Critically Endangered
Pig-tailed langur
Simias concolor
The pig-tailed langur, monotypic in genus Simias, is a large Old World monkey, endemic to several small islands off the coast of Sumatra in Indonesia.
Appearance
Its fur is black-brown, and its hairless face is also black. The pig-tailed langur, 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.
The pig-tailed langur reaches a full grown length of approximately 50 cm (20 in) and a weight of 7 kg (15 lb).
Range and habitat
This primate is endemic to the Mentawai Islands, there are two subspecies, Pig-tailed langur concolor also known as simasepsep that resides on the southern islands of Sipora, North Pagai, and South Pagai. The second subspecies is Pig-tailed langur siberut also known as simakobou that lives only on the island of Siberut. It is a diurnal and arboreal rain forest dweller, often spending most of its time in the canopy but occasionally comes to ground.
There are two subspecies of this primate, Pig-tailed langur concolor that lives in the southern Mentawai islands, and Pig-tailed langur siberu that lives exclusively in the northern island of Siberut. The northern island of Siberut shows a greater abundance of this species in comparison to the southern Mentawai islands.
Pins are Wikidata “endemic to” fields. Orange dots, when present, are GBIF occurrence tiles — survey bias included.
Diet
It is an omnivore with a diet consisting of leaves, flowers, fruits and occasionally insects. Leaves are the most abundant in their diet followed by fruits.
As with all other Colobinae primates, this species is diurnal. It is a diurnal species, feeding in the rainforest canopy on leaves, and to a lesser extent, fruit and berries.
In crisis
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". Group sizes range from around 3 to 9 individuals depending on locations and hunting pressures. This species is classified as Critically endangered by the International Union for Conservation of Nature.
It was classified as Endangered (IUCN status) up until 2008 were the endangerment status was changed to Critically Endangered. In the 1980s population estimates of the Pig-tailed langur was 19,000 on the island of Siberut and 26,000 across all four islands.
CITES lists this taxon on Appendix I. Confirm the current appendix on the CITES checklist.
Pig-tailed langur is Critically Endangered on this catalog because that is the IUCN category stored on Wikidata. Confirm the official criteria and any later count on iucnredlist.org.
Sources
Written for this catalog from the English Wikipedia article on Pig-tailed langur, Wikidata item Q617979. Family and order context is original field-guide writing about the group, not a copied assessment of this one species. Wikipedia text is CC BY-SA. Not an IUCN assessment. Counts, when quoted, can change — confirm them on the recovery programme and on iucnredlist.org.
