Slim man

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Slim man
Red-legged robe monkey (Pygathrix nemaeus)

Red-legged robe monkey ( Pygathrix nemaeus )

Systematics
Partial order : Monkey (anthropoidea)
without rank: Old World Monkey (Catarrhini)
Superfamily : Tailed Old World Monkey (Cercopithecoidea)
Family : Vervet monkey relatives (Cercopithecidae)
Subfamily : Common monkeys and colobus monkeys (Colobinae)
Tribe : Slim man
Scientific name
Presbytini
Gray , 1825

The slender monkeys (Presbytini) are a genus group ( tribe ) within the primate family of the vervet monkey relatives (Cercopithecidae).

features

They are medium-sized primates with a body weight of 5.6 to 6.7 kg for the relatively small cap langurs ( Presbytis ) and a weight of 10 to 20 kg, or 9 to 18 kg for the proboscis monkey ( Nasalis larvatus ) and the snub-nosed monkey ( Rhinopithecus) ). They mostly live in trees and are equipped with mostly long legs and a long tail in adaptation to the change from one treetop to another, which has to be managed by jumping. Most slim monkeys in the “odd-nosed” group show pronounced gender dimorphism in terms of body weight . An exception are the robed monkeys ( Pygathrix ), in which males and females are almost equally heavy. In the crested langurs ( Trachypithecus ) the sexual dimorphism is clear, in the boned langurs it is usually rather low.

Like their African sister group , the Colobini monkeys , the slender monkeys are adapted to a diet based on leaves and other vegetable matter. The snouts are relatively short. Your lower jaws are high and the lower jaw branch is strongly developed to increase the chewing pressure when chopping the leaves. The stomach is enlarged, multi-chambered and populated with bacteria that break down cellulose .

Genera and distribution

Seven genera with almost 60 species are summarized in this group.

  • Boned langurs ( Presbytis ), 17 species on the Malay Peninsula, Borneo, Java, Sumatra and the Mentawai Islands
  • Crested langurs ( Trachypithecus ), 20 species in Southeast Asia, Bangladesh and Northeast India
  • Indian langurs ( Semnopithecus ), 8 species in India, Bangladesh, Nepal and Sri Lanka
  • Dressed monkeys ( Pygathrix ), 3 species in Indochina
  • Snub-nosed monkeys ( Rhinopithecus ), 5 species in southern and central China, northern Myanmar and northern Vietnam
  • Pageh snub nose ( Simias ), 1 species on the Mentawai Islands
  • Proboscis monkey ( Nasalis ), 1 species in Borneo

The first three genera are summarized as sub- tribus langurs (Presbytina), the last four genera are sometimes referred to in English as "odd-nosed-monkeys" due to their sometimes conspicuous structure of the nose.

literature

  • Thomas Geissmann : Comparative Primatology. Springer-Verlag, Berlin et al. 2003, ISBN 3-540-43645-6 .
  • Don E. Wilson, DeeAnn M. Reeder (Eds.): Mammal Species of the World. A taxonomic and geographic Reference. Johns Hopkins University Press, Baltimore MD 2005, ISBN 0-8018-8221-4 .

supporting documents

  1. ↑ T. Geissmann: Comparative Primatology. Springer-Verlag, Berlin et al. 2003, p. 224.
  2. ↑ T. Geissmann: Comparative Primatology. Springer-Verlag, Berlin et al. 2003, p. 226.
  3. ↑ T. Geissmann: Comparative Primatology. Springer-Verlag, Berlin et al. 2003, p. 229.
  4. ↑ E. Strasser: hindlimb proportions, allometry, and biomechanics in Old World monkeys (Primates, Cercopithecidae). In: American Journal of Physical Anthropology. Volume 87, 1992, pp. 187-213. doi: 10.1002 / ajpa.1330870207
  5. ↑ T. Geissmann: Comparative Primatology. Springer-Verlag, Berlin et al. 2003, pp. 217-229.
  6. ↑ T. Geissmann: Comparative Primatology. Springer-Verlag, Berlin et al. 2003, p. 217.

Web links

Commons : Presbytini  - collection of images, videos and audio files