Nomascus
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Nomascus is the second-most speciose genus of the gibbon family, Hylobatidae. Originally, this genus was a subgenus of Hylobates, with all individuals considered to be one species, H. concolor.
Species within Nomascus are characterized by 52 chromosomes. Some species are all-black, some are a lighter beige or peach hue, with a distinct black tuft of crown fur, while others have notable, light-colored cheek “patches”. Nomascus is endemic from southern China (Yunnan) to southern Vietnam, and can also be found on Hainan. Every species within this genus are either endangered or critically endangered; the Eastern black crested gibbon (Nomascus nasutus) has been deemed "the most-critically endangered ape species in the world".
Extant species
| Common name | Scientific name and subspecies | Range | Size and ecology | IUCN status and estimated population |
|---|---|---|---|---|
| Black crested gibbon | Nomascus concolor (Harlan, 1826) Four subspecies Tonkin black crested gibbon, Nomascus concolor concolorLaotian black crested gibbon, Nomascus concolor luCentral Yunnan black crested gibbon, Nomascus concolor jingdongensisWest Yunnan black crested gibbon, Nomascus concolor furvogaster | China, Laos, and northern Vietnam | Size: Habitat: Diet: | CR |
| Eastern black crested gibbon | Nomascus nasutus (Künckel d'Herculais, 1884) | northeast Vietnam | Size: Habitat: Diet: | CR |
| Hainan black crested gibbon | Nomascus hainanus (Thomas, 1892) | Hainan Island, China. | Size: Habitat: Diet: | CR |
| Northern white-cheeked gibbon | Nomascus leucogenys (Ogilby, 1840) | northern Vietnam and northern Laos | Size: Habitat: Diet: | CR |
| Southern white-cheeked gibbon | Nomascus siki (Delacour, 1951) | Vietnam and Laos. | Size: Habitat: Diet: | EN |
| Yellow-cheeked gibbon | Nomascus gabriellae (Thomas, 1909) | Vietnam, Laos, and Cambodia | Size: Habitat: Diet: | EN |
| Northern buffed-cheeked gibbon | Nomascus annamensis Thinh et al., 2010 | Vietnam, Cambodia, and Laos. | Size: Habitat: Diet: | EN |
Extinct species
- Imperial gibbon, Nomascus imperialis (extinct ca. ~200 BC or later, formerly placed in genus Junzi)
Classification
- Family Hylobatidae: gibbons Genus Hylobates Genus Hoolock Genus Symphalangus Genus Nomascus Black crested gibbon, Nomascus concolor Tonkin black crested gibbon, Nomascus concolor concolor Laotian black crested gibbon, Nomascus concolor lu Central Yunnan black crested gibbon, Nomascus concolor jingdongensis West Yunnan black crested gibbon, Nomascus concolor furvogaster Eastern black crested gibbon, Nomascus nasutus Hainan black crested gibbon, Nomascus hainanus †Imperial gibbon, Nomascus imperialis Northern white-cheeked gibbon, Nomascus leucogenys Southern white-cheeked gibbon, Nomascus siki Yellow-cheeked gibbon, Nomascus gabriellae Northern buffed-cheeked gibbon, Nomascus annamensis
External links
- ARKive -