Any explanation as to what happened to its front left paw's claws ?
Perhaps hybrid with Presbytis mitrata. Geographicaly, this is homerange of P. mitrata. That's explain why the coler is not thick redish but somewhat paler
Di temukan di hutan Sumatra pada ketinggian 1150m asl.
Darker back and at higher altitudes unlike insignis,also much more tame