This species is sexually dimorphic . The black-capped capuchin is found in the countries of Argentina, Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Peru, Suriname, and Venezuela. This species is usually found in humid forests below 500 meters. Westergaard et al. The group sizes range from 10 to 35 individuals.
Social grooming is an important method of maintaining social bonds within the group.
This is where a black-capped capuchin will lie on one side with the head drawn in and the body curled up into a ball. This is used to communicate submission. The black-capped capuchin gives birth to a single offspring. Brown, A.D. and Zunino, G.E. 1990. Folia Primatologica Vol.