Southern black langur
| Southern black langur | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Trachypithecus laotum | ||||||||||||
| ( Thomas , 1911) |
The southern black langur or Laos langur ( Trachypithecus laotum ) is a primate species from the group of slender monkeys (Presbytini). Within the crested langurs it belongs to the francoisi group , a group of predominantly black langurs that live mainly on the Indochinese peninsula . The Hatinh langur is sometimes listed as a subspecies of the southern black langur.
features
The fur of these primates is predominantly black, with a wide, white stripe on their foreheads. Light hair can also be present around the mouth and on the throat, as well as in the area between the corners of the mouth and the ears. The head of hair is white, the tip is black. The hairless skin of the face, ears, and hands and feet is black. Like all crested langurs, they are slender primates with a long tail. The animals reach a head-trunk length of 55 to 67 cm (males) or 46 to 54 cm (females) and have a 85 to 90 cm (males) or 81 to 85 cm (females) long tail. The weight of the adult males is 7 to 8 kg, that of the smaller females 6 to 7 kg.
Distribution, habitat and way of life
The southern black langur is endemic to Laos , where it inhabits the central parts of the country (from the south of Bolikhamsai Province to the center of Khammuan ). Habitat of the species are karst areas in which only the valleys are forested. About half of the territory in the distribution area is only covered by sparse rock vegetation, 40% is covered by light, evergreen forests. Little is known about the way of life. These animals are diurnal, spend more time on rocks than trees, and move mainly on four legs. They live in harem groups made up of a male, one or more females and the young. The groups observed so far consisted of five to ten individuals. Southern black langurs are herbivores that feed primarily on leaves.
Little is known about the degree of risk. The IUCN lists the species under “too little data available” ( data deficient ).
literature
- Thomas Geissmann : Comparative Primatology. Springer-Verlag, Berlin et al. 2003, ISBN 3-540-43645-6 .
Individual evidence
- ^ A b D. Zinner, GH Fickenscher & C. Roos: Family Cercopithecidae (Old World monkeys). Page 752 in Russell A. Mittermeier , Anthony B. Rylands & Don E. Wilson : Handbook of the Mammals of the World: Primates: 3rd ISBN 978-8496553897
- ↑ trachypithecus laotum in the endangered Red List species the IUCN 2006. Posted by: A. Eudey & Members of the Primate Specialist Group, 2000. Retrieved on April 25 of 2008.