The Río Cesar white-fronted capuchin (Cebus cesarae) is a species of gracile capuchin monkey from the Río Cesar Valley in northern Colombia. It had previously been considered a subspecies of the white-fronted capuchin (C. albifrons). Genetic analysis by Jean Boubli in 2012 revealed that the Río Cesar white-fronted capuchin is actually more closely related to the Colombian white-faced capuchin (C. capucinus) than it is to C. albifrons. Some authors regard it to be a subspecies of the varied white-fronted capuchin (C. versicolor cesarae).
The Río Cesar white-fronted capuchin lives in dry semi-deciduous forest, gallery forest and mangroves. Its fur is light colored. Males have a head and body length between with a tail length of between . Females have a head and body length between with a tail length of between .
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