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.

The northern white-cheeked gibbon (Nomascus leucogenys) is a Critically Endangered species of gibbon native to South East Asia. It is closely related to the southern white-cheeked gibbon (Nomascus siki), with which it was previously considered conspecific. [3]

Dec 1, 2010 · Gibbons are members of the family Hylobatidae and though they are apes, they are known as lesser, or small, apes. The four genera of gibbons are differentiated on the number of chromosomes, among other things. The white-cheeked gibbon is in the genus Nomascus and has 52 diploid chromosomes (Rowe 1996). MORPHOLOGY

The males have an upstanding tuft of hair on top of the head and a small inflatable throat sac. All species live east of the Mekong River. The cao vit gibbon (Nomascus nasutus) lives in a small mountainous pocket along the border of China and Vietnam.

Initially, most scientists believed there was one general taxon, dubbed Nomascus concolor, and a small variety of subspecies. However, thanks to modern advances, further research into crested gibbons has revealed that they form a quite biologically diverse subset of the gibbon family.

5 days ago · Hainan gibbon (Nomascus hainanus) is the world’s rarest primate species; however, insufficient data on its habitat suitability and genetic status impede evidence-based decisions for habitat restoration.

This novel yellow-cheeked variety in the northern part of the former distribution was given a shiny new scientific name, Nomascus annamensis, while the species in the southern region kept their original name.

The southern white-cheeked gibbon (Nomascus siki) is a species of gibbon native to Vietnam and Laos. It is closely related to the northern white-cheeked gibbon (Nomascus leucogenys) and the yellow-cheeked gibbon (Nomascus gabriellae); it has previously been identified as a subspecies of each of these.

Nomascus is the second most common genus (biology) of Gibbon. There are six species in the genus. Originally Nomascus was a sub-genus of the Hylobatidae.

The white-cheeked gibbon or Northern (Nomascus leucogenys) is a small, agile primate native to Southeast Asia, known for their distinctive vocalizations and incredible ability to swing through the trees.