|Red List Category & Criteria:
||Nijman, V. & Manullang, B.
||Mittermeier, R.A. & Rylands, A.B. (Primate Red List Authority)
Listed as Endangered as at least 80% of the forest habitat has been removed; however, much of this deforestation was during colonial times. It is estimated that at least 50% of this has occurred in the past 30 years (three generations), yet remaining forests are severely fragmented. Further assessment of the rates of occupancy in remaining forest is necessary to determine persistence into the future, thus this subspecies should be reassessed as more information becomes available. Of all the subspecies, this is the most heavily traded for the illegal pet trade.