Hose's langur (Presbytis hosei) is a species of primate from Southeast Asia. It was first identified in Kutai National Park and Sangkulirang Peninsula, East Kalimantan, Indonesia, in 1985.
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DiurnalDiurnal animals are active during the daytime, with a period of sleeping or other inactivity at night. The timing of activity by an animal depends ...
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FolivoreIn zoology, a folivore is a herbivore that specializes in eating leaves. Mature leaves contain a high proportion of hard-to-digest cellulose, less ...
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HerbivoreA herbivore is an animal anatomically and physiologically adapted to eating plant material, for example, foliage, for the main component of its die...
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GranivoreSeed predation, often referred to as granivory, is a type of plant-animal interaction in which granivores (seed predators) feed on the seeds of pla...
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FrugivoreA frugivore is an animal that thrives mostly on raw fruits or succulent fruit-like produce of plants such as roots, shoots, nuts, and seeds. Approx...
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TerrestrialTerrestrial animals are animals that live predominantly or entirely on land (e.g., cats, ants, snails), as compared with aquatic animals, which liv...
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ViviparousAmong animals, viviparity is the development of the embryo inside the body of the parent. The term 'viviparity' and its adjective form 'viviparous'...
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ArborealArboreal locomotion is the locomotion of animals in trees. In habitats in which trees are present, animals have evolved to move in them. Some anima...
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BrowsingBrowsing is a type of herbivory in which an herbivore (or, more narrowly defined, a folivore) feeds on leaves, soft shoots, or fruits of high-growi...
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Island endemicIsland endemic animals are found in a single defined geographic location, such as an island. Animals or organisms that are indigenous to a place ar...
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PolygynyPolygyny is a mating system in which one male lives and mates with multiple females but each female only mates with a single male.
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Not a migrantAnimals that do not make seasonal movements and stay in their native home ranges all year round are called not migrants or residents.
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starts withHose's langurs have a light to dark gray coat. Their stomach and chest are white in color. The face of Hose's langurs is pink and has black markings. Their hands and feet are black.
Hose's langurs are found only on the island of Borneo, including Brunei, Kalimantan (Indonesia), and East Malaysia where they inhabit subtropical or tropical moist forests. They live both in lowland and hilly areas and may sometimes visit plantations.
Hose's langurs live in trees and are active during the day. They live in groups of 6-8 individuals. Each group consists of one adult male, 2 or more females, and their young. Hose's langurs are very territorial with males calling loudly when trying to keep intruders away.
Hose's langurs are mainly herbivores (folivores, frugivores, granivores) and eat seeds, young leaves, fruits, and flowers. However, they may sometimes take bird eggs and nestlings.
Hose’s langurs are polygynous, meaning one male mates with more than one female during the breeding season. Each female gives birth to one infant. Weaning usually occurs at the age of one year and young Hose's langurs become reproductively mature when they are 4-5 years old; at this age, young males leave their family groups.
In 1996, Hose's langurs of East Kalimantan, Indonesia, were among the most common primates in the area but in 2003, their population had decreased by 50-80%. The sudden drop in population arises from the rising demand for their bezoar stones and to prevent crop raiding and the rapid deforestation and removal of their native habitat. Hose's langurs continue to lose their habitat and every known area in which they live has been affected severely by humans.
The IUCN Red List and other sources don’t provide the number of the Hose's langur total population size. Currently, this species is classified as Vulnerable (VU) on the IUCN Red List, and its numbers today are decreasing.
Social animals are those animals that interact highly with other animals, usually of their own species (conspecifics), to the point of having a rec...