Diet
This monkey has a specialized diet of tree gum. It gnaws holes in the bark of appropriate trees and vines with its specialized dentition to elicit the production of gum. When the gum production resources, usually just 1-2 trees, of its home range (0.1 to 0.4 ha) become depleted, a group moves to a new home range. Brown-mantled tamarins are generally sympatric with pygmy marmosets and often raid pygmy marmosets' gum holes. Insects and arachnids are also principal food resources of the species.
Pygmy marmosets have adapted insect-like tegulae to engage in a high degree of claw-clinging behaviors associated with exudate exploitation. Claw-clinging is primarily used during feeding, but also during exudate foraging.
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