to brown with yellow and gray tinges on varying parts of their bodies. Their “wedge cap” starts between the eyes and extends backwards to cover the top of the head. Their faces are hairless and surrounded by light brown or blonde fur. Wedge-capped capuchins show similar levels of sexual dimorphism as other capuchin monkeys. On average, males weigh about 30% more than females. Additionally, males have relatively longer canines than females (even after overall body size is accounted for). Male maxillary and mandibular (upper and lower) canines of males are on average 70% and 40% larger than female canines respectively. This may be indicative of male competition for females. Locomotion and morphology Wedge-capped capuchins have been compared to tufted capuchins to discern the relationship between locomotion and skeletal proportions. Wedge-capped capuchins spent relatively more time running and jumping through the forest canopy while tufted capuchins spent more time walking and moving slowly. As such, wedge-capped capuchins have relatively longer limbs (particularly the hind limbs) than tufted capuchins. Phylogeny Due to large physical variations in Cebus, taxonomists have frequently debated the exact classifications and details of the genus. However, most agree that the wedge-capped capuchin shares the genus with four others: C. apella, C. albifrons, C. capucinus, and C. kaapori. The wedge-capped capuchin has a diploid chromosome number of 52, though some others in the genus have 54 chromosomes. Nine human chromosomes correspond to those of the C. olivaceus. Phylogenetic analysis and constructions of cladograms have demonstrated that the wedge-capped capuchin is closely related to C. apella. Habitat and range Wedge-capped capuchins prefer undisturbed primary forests in which they can move through the canopy (locomotion and limb morphology). They occupy the rainforests of northern Brazil and Venezuela, as well as the drier forests along riverbeds in Guyana. These habitats vary in terms of forest height, composition, and continuity. When wedge-capped capuchins have the option between dense high-canopy primary forests and more fragmented, lower forests, they generally inhabit the primary forests. They are found north of the Orinoco River, south of the Sierra de Perijá and Venezuelan Coastal Range, and east to the Essequibo River in western Guyana. Diet Wedge-capped capuchins are omnivorous and eat both animal and plant foods. Foraging behavior varies seasonally, as well as with age and sex. In general, these monkeys spend approximately equal amounts of time exploiting animal and plant resources. The exception to this are infants