There is limited information on insectivory in folivorous primates. Here, we report that wild Sichuan snub-nosed monkeys (Rhinopithecus roxellana) consume cicadas (Karenia caelatata) in the Qinling Mountains of China. Our research suggests that snub-nosed monkeys expand their diet and prey on cicadas during summer and early autumn, possibly in response to increased availability of these insects and their relatively high protein and fat content relative to leaves.

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