There is an estimated 818 individuals in Ranomafana National Park and the decline in numbers is due to hunting and habitat loss.

It is listed by the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) on Appendix 1 and the IUCN considers it to be vulnerable.

The IUCN considered this subspecies to be 'data deficient'[10] and it is listed by the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) on Appendix 1.

[11] The exact distribution is not known but in the west of the island it is found in the forests of Tsingy de Bemaraha, probably as far north as the Betsiboka River, and in the Makay massif in the southwest of Madagascar.

It will also eat fig leaves, flowers, fungi, grass stems, small fruits and sugar cane.