Sumatran surili

The Sumatran Langur ( Presbytis melalophos ) is a primate of the group of monkeys Slim ( Presbytini ).

Features

Sumatra langurs are like all Mützenlanguren relatively small, slender primates with long hind legs and a long tail. The average weight of males is 5.9 and that of the females 5.8 kg. There are four recognized externally different subspecies. P. m. melalophos is colored bright red on the back and outer sides of the limbs reddish- yellow or yellowish- brown and the belly. P. m. bicolor has a dark brown back, a white belly and black hands and feet. P. m. mitrata has an ashen-gray fur on the back and a whitish inside and P. m. sumatranus a brownish back and a cream-colored belly. Even the head of hair at the top of the head and the face can be patterned.

Distribution and habitat

Sumatra langurs live exclusively on the island belonging to Indonesia Sumatra. Their habitat is forests, alongside deeper primary forests they also occur in mountain forests. The IUCN lists the species as Near Threatened, the main threat is likely to be the progressive destruction of their habitat, as in many Southeast Asian primates.

Way of life

These primates are diurnal and arboreal. They move away either on all fours or jumping. They live in groups of 5 to 8 animals, usually consisting of one male, several females and the corresponding offspring. There are also groups with several males as well as pure male groups ( " bachelor groups "). Sumatra langurs are herbivores, their diet consists mainly of leaves, in addition they also take unripe fruits, flowers and seeds to himself. Like all monkeys, they have a multi-chambered Slim stomach for better utilization of their food.

System

The genus of Mützenlanguren ( Presbytis ) has - probably related to variations in sea level during the ice age - will experience a great radiation. There are now numerous species and subspecies distinction, whose precise systematic distinction has become blurred. Only in the 1970s, the Sumatran Langur has been recognized as a different kind of Bindenlangur. Some classifications such as Geissmann (2003) share the kind in four types: Yellow, Brown, Gray and Red Sumatran Langur, the nomenclature used here follows Wilson & Reeder (2005 ) and combines all of these into a common type together.