Wiktionary
agile gibbon
n. ''Hylobates agilis'', a primate in the Hylobatidae or gibbon family
Wikipedia
Agile gibbon
The agile gibbon (Hylobates agilis), also known as the black-handed gibbon, is an Old World primate in the gibbon family. It is found in Indonesia on the island of Sumatra, Malaysia, and southern Thailand. The species is listed as endangered on the IUCN Red List due to habitat destruction and the pet trade.