A recent study supports the idea that extracting hidden insects such as termites and ants to eat by capuchins and other primates such as humans (who have a long history of entomophagy), especially during seasons where other foods are less available, has led to adaptations in parts of the brain, causing increased manual dexterity, tool use, and innovative problem solving among entomophagous primates.

Original article: http://www.sciencedirect.com/science/article/pii/S004724841400044X