Raffles bandage langur

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Raffles bandage langur
Presbytis femoralis Andie Ang.jpg

Raffles lavender ( Presbytis femoralis )

Systematics
Superfamily : Tailed Old World Monkey (Cercopithecoidea)
Family : Vervet monkey relatives (Cercopithecidae)
Subfamily : Common monkeys and colobus monkeys (Colobinae)
Sub tribus : Langur (Presbytina)
Genre : Boned langurs ( Presbytis )
Type : Raffles bandage langur
Scientific name
Presbytis femoralis
( Martin , 1838)

Raffles banded langur ( Presbytis femoralis ), also simply called banded langur or banded langur , is a species of primate from the group of slender monkeys (Presbytini).

features

Raffles lavender have a dark gray or black fur, the belly is gray with a white vertical stripe extending down the middle of the belly. Arms and legs, as well as the tail, are colored like the trunk, whereby the insides of arms and legs and the underside of the tail are not highlighted, as is the case with many monkeys. The chest hair is directed backwards, the stomach hair forward. Where they meet they form a low hair comb. The cheeks and the rings around the eyes are usually light gray in color. Like all boned langurs , they are relatively small, slender primates with long hind legs and a long tail. Their average weight is around 6 kilograms. Individuals from Singapore are darker in color on the belly and are usually slightly smaller than the animals from mainland Malay.

Distribution and way of life

The distribution area in the south of the Malay Peninsula and on Singapore

Raffles lavender live in Southeast Asia, in the south of the Malay Peninsula , in the Malaysian state of Johor and on Singapore . Their habitat is forests, both primary and secondary forests . They are diurnal tree dwellers and skilful climbers who either move on all fours or jump through the branches. They live in groups of 2 to 8, sometimes up to 15 animals. These are harem groups, so they consist of a male, several females and their offspring. These primates are herbivores that feed primarily on young leaves and fruits.

Reproduction can take place all year round, after a gestation period of around 168 days the female gives birth to a single young. This is initially white-gray in color and is suckled for 10 to 12 months.

Systematics

Raffles bandage langur was first scientifically described in 1838 by the British naturalist William Charles Linnaeus Martin and is now considered to be monotypical , according to which the subspecies originally included in Presbytis femoralis have been regarded as separate species since 2001 and 2020. These are the Sarawak langur ( Presbytis chrysomelas ), the Natuna langur ( Presbytis natunae ) and the white-legged langur ( Presbytis siamensis ) and, since June 2020, also the East Sumatran banded langur ( Presbytis robura ) and Robinson's banded langur ( Presbytis ).

Danger

Raffles lavender is critically endangered and the population is estimated at 250 to 300 animals in Malaysia and around 60 in Singapore.

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. ^ A b D. Zinner, GH Fickenscher & C. Roos: Family Cercopithecidae (Old World monkeys). Page 715 in Russell A. Mittermeier , Anthony B. Rylands & Don E. Wilson : Handbook of the Mammals of the World - Volume 3: Primates. Lynx Edicions, 2013 ISBN 978-8496553897
  2. ↑ a b Andie Ang, Dewi Imelda Roesma, Vincent Nijman, Rudolf Meier, Amrita Srivathsan and Rizaldi. 2020. Faecal DNA to the Rescue: Shotgun Sequencing of Non-invasive Samples reveals Two Subspecies of Southeast Asian Primates to be Critically Endangered Species. Scientific Reports. 10, 9396. DOI: 10.1038 / s41598-020-66007-8

Web links