The hairy saki[1] (Pithecia hirsuta) is a species of saki monkey, a New World primate species.
- These Sakis are distinguished by their small size of 30 to 50 cm and a very heavy, dense, non-prehensile tail, adding 25 to 55 cm to their body length.
- The hairy saki’s face is partially bald but has a beard and a hood of curly black hair covering its forehead.
- The nostrils are positioned laterally on the face. These sakis are generally black, but their feet and hands are light in color.
- These coloring patterns can be considered the most uniform and simplest of the sakis, with very little difference in coloration between males and females. Both are primarily blackish agoutis.