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''Nomascus'' is the second-most speciose genus of gibbons (family Hylobatidae). Originally, this genus was a subgenus of ''Hylobates'', and all individuals were considered one species, ''Hylobates concolor''. Species within ''Nomascus'' are characterized by 52 chromosomes. Some species are all black, some are light with a distinct black tuft of crown fur, and some have distinct, light-colored cheek patches. ''Nomascus'' is found from southern China (Yunnan) to southern Vietnam, and also on Hainan Island. One species, ''Nomascus nasutus,'' has been deemed "the most critically endangered ape species in the world".〔 All species in this genus are endangered or critically endangered. ==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'' * * * Northern white-cheeked gibbon, ''Nomascus leucogenys'' * * * Southern white-cheeked gibbon, ''Nomascus siki'' * * * Yellow-cheeked gibbon, ''Nomascus gabriellae'' * * * Northern buffed-cheeked gibbon, ''Nomascus annamensis'' 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Nomascus」の詳細全文を読む スポンサード リンク
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