The grizzled surili[1] (Presbytis comata) is a threatened species of Old World monkey native to the western half of Java, Indonesia, a biodiversity hotspot.
- Other common names by which it is known are Javan surili; Grey, Grizzled or Sunda Island Surili; stripe-crested or grizzled langur; Javanese grizzled langur; grizzled, Javan or Java leaf monkey.
- The coat color of the grizzled surili ranges from whitish in some populations to dark gray or nearly black in others.
- Their ventral fur, on their chest and abdomen, is bright white from their chin to their long tail, and the “grizzled” part of its name refers to the mixture of colors in their dense, fluffy fur.
- As with other langurs, their heads are relatively small compared to their body size.
- The grizzled surili has long limbs, a small, pinched face, round, dark eyes, and small, protruding ears.
- They are agile jumpers with prehensile fingers and are reluctant to leave the forest canopy.
