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Southern plains gray langur was the common name ascribed to Semnopithecus dussumieri by Mammal Species of the World (3rd edition) in 2005. [1] Along with several other Semnopithecus , it had been previously considered a subspecies of the northern plains gray langur , Semnopithecus entellus , i.e., Semnopithecus entellus dussumieri . [ 2 ]
The northern plains gray langur belongs to the genus Semnopithecus along with the other Indian langurs. The southern plains gray langur was once classified as a subspecies of S. entellus, i.e., S. entellus dussumieri and later regarded as a separate species, i.e., S. dussumieri, but is now regarded as an invalid taxon.
The Nepal gray langur (Semnopithecus schistaceus) is a gray langur endemic to the Himalayas in Nepal, far southwestern Tibet, northern India, northern Pakistan, Bhutan and possibly Afghanistan. It is found in forests at an elevation of 1,500 to 4,000 metres (4,900 to 13,100 ft). [ 1 ]
Unlike langurs that live in karst forests, which have a largely terrestrial lifestyle, the Indochinese grey langur inhabits old-growth evergreen forests and has a largely arboreal lifestyle. [ 6 ] Threats
Tarai gray langur range The Tarai gray langur ( Semnopithecus hector ) is an Old World monkey , and was formerly considered a subspecies of the northern plains gray langur . The species is listed as near threatened , as there are probably not many more than 10,000 mature individuals, and it is experiencing a continuing decline.
The Javan surili (Presbytis comata) is a vulnerable species of Old World monkey endemic to the western half of Java, Indonesia, a biodiversity hotspot.Other common names by which it is known by include gray, grizzled or Sunda Island surili; grizzled or stripe-crested langur; Javan grizzled langur; grizzled, Java or Javan leaf monkey; langur gris.
Tufted gray langurs communicate with many different ways such as barks, grunts, whoops, whistles and howls. The cough like voice is used for giving tension, and whistling for the contact loss with the troop. [4] The tufted gray langur monkey's superior eyesight and ability to sit atop high trees allows it to spot predators easily.
Black-footed gray langur, (Semnopithecus hypoleucos) Nilgiri langur (Trachypithecus johnii) Two subfamilies are recognized, the Cercopithecinae, which are mainly African, but include the diverse genus of macaques, which are Asian and North African, and the Colobinae, which includes most of the Asian genera, but also the African colobus monkeys.