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  3. Nomascus - Wikipedia
Nomascus - Wikipedia
From Wikipedia, the free encyclopedia

Nomascus
Northern white-cheeked gibbon
Nomascus leucogenys
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Suborder: Haplorhini
Family: Hylobatidae
Genus: Nomascus
Miller, 1933
Type species
Hylobates leucogenys
Ogilby, 1840
Species

Nomascus concolor
Nomascus nasutus
Nomascus hainanus
†Nomascus imperialis
Nomascus leucogenys
Nomascus siki
Nomascus gabriellae
Nomascus annamensis

Map showing the distribution of Nomascus species
  Nomascus leucogenys - Extant
  Nomascus leucogenys - Possibly Extant
  Nomascus leucogenys - Possibly Extinct
  Nomascus concolor - Extant
  Nomascus concolor - Possibly Extant
  Nomascus nasutus - Extant
  Nomascus siki - Extant
  Nomascus hainanus - Extant
  Nomascus annamensis - Extant
  Nomascus gabriellae - Extant

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".[1]

Extant species

Genus Nomascus – Miller, 1933 – seven 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 concolor
  • Laotian black crested gibbon, Nomascus concolor lu
  • Central Yunnan black crested gibbon, Nomascus concolor jingdongensis
  • West Yunnan black crested gibbon, Nomascus concolor furvogaster
China, Laos, and northern Vietnam
Map of range 		Size:

Habitat:

Diet: 		 CR 


Eastern black crested gibbon Nomascus nasutus
(Künckel d'Herculais, 1884) 		northeast Vietnam
Map of range 		Size:

Habitat:

Diet: 		 CR 


Hainan black crested gibbon

 Nomascus hainanus
(Thomas, 1892) 		Hainan Island, China.
Map of range 		Size:

Habitat:

Diet: 		 CR 


Northern white-cheeked gibbon

 Nomascus leucogenys
(Ogilby, 1840) 		northern Vietnam and northern Laos
Map of range 		Size:

Habitat:

Diet: 		 CR 


Southern white-cheeked gibbon

 Nomascus siki
(Delacour, 1951) 		Vietnam and Laos.
Map of range 		Size:

Habitat:

Diet: 		 EN 


Yellow-cheeked gibbon

 Nomascus gabriellae
(Thomas, 1909) 		Vietnam, Laos, and Cambodia
Map of range 		Size:

Habitat:

Diet: 		 EN 


Northern buffed-cheeked gibbon Nomascus annamensis
Thinh et al., 2010 		Vietnam, Cambodia, and Laos.
Map of range 		Size:

Habitat:

Diet: 		 EN 


Extinct species

Classification

Foot of a captive gibbon (N. gabriellae)

References

  1. ^ Geissmann, Thomas (December 1995). "Gibbon systematics and species identification" (PDF). International Zoo News. 42: 467–501. Retrieved 2008-08-15.
  2. ^ "New Gibbon Species Found in Royal Tomb in China". Science. 2025-11-23. Retrieved 2025-11-23.
  3. ^ Turvey, Samuel T.; Bruun, Kristoffer; Ortiz, Alejandra; Hansford, James; Hu, Songmei; Ding, Yan; Zhang, Tianen; Chatterjee, Helen J. (2018-06-22). "New genus of extinct Holocene gibbon associated with humans in Imperial China". Science. 360 (6395): 1346–1349. doi:10.1126/science.aao4903.
  4. ^ a b Wang, Sheng; Chen, Zehui; Luo, Ayun; You, Xinran; Kitchener, Andrew C.; Tu, Xiaolong; Thakur, Mukesh; Umapathy, Govindhaswamy; Hu, Songmei; Zhang, Tianen; Zhang, Yingqi; Liu, Siqiong; Ding, Yan; Liu, Feng; Dai, Qingyan (2025-11-07). "Genome sequences of extant and extinct gibbons reveal their phylogeny, demographic history, and conservation status". Cell. 0 (0). doi:10.1016/j.cell.2025.10.016. ISSN 0092-8674. PMID 41205599.
  5. ^ Groves, C. P. (2005). Wilson, D. E.; Reeder, D. M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Baltimore: Johns Hopkins University Press. pp. 180–181. ISBN 0-801-88221-4. OCLC 62265494.
  6. ^ Thomas Geissmann (April 2007). "Status reassessment of the gibbons: Results of the Asian Primate Red List Workshop 2006". Gibbon Journal (3).
  7. ^ Van Ngoc Thinh; Alan R. Mootnick; Vu Ngoc Thanh; Tilo Nadler; Christian Roos (2010). "A new species of crested gibbon, from the central Annamite mountain range". Vietnamese Journal of Primatology. 1 (4): 1–12.
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