Symphalangus

The genus Symphalangus is a classification within the gibbon family (Hylobatidae). Gibbons are small apes found in the tropical forests of Southeast Asia. They are characterized by their humanlike build, lack of a tail, and long arms, which they use for brachiation, or swinging from branches.12

The siamang (Symphalangus syndactylus) is the sole member of the Symphalangus genus. It is a robust gibbon distinguished by webbing between its second and third toes and a dilatable throat sac that amplifies its booming call. Siamangs are arboreal, diurnal, and primarily feed on fruit. Most gibbon species, including those in the Symphalangus genus, are considered endangered due to habitat destruction.321