IUCN threat status:

Vulnerable (VU)

Distribution

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Range Description

This species is found in southern China (western Yunnan) and northeastern Myanmar (east of the Chindwin River). In China it is found as far east as the Salween River, and north to nearly 26°N (Groves 2001). Das et al. (2006) reported the discovery of a population of H. leuconedys in eastern Arunachal Pradesh, north-east India, which has traditionally been considered to be part of the distribution area of H. hoolock. This record has yet to be proven (T. Geissmann pers. comm.).

The boundary between the two species of hoolock gibbon is uncertain in the Chindwin headwaters in the north, and possibly includes a zone of intermediates or variable population (T. Geissmann pers. comm.). More fieldwork is needed to investigate populations on both sides of the river and in the headwaters of the Chindwin, where there is likely to be one or more hybrid zones or clines (W. Brockelman pers. comm.).

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Source: IUCN

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