Evidence for insectivory in two primate species (Callicebus torquatus lugens and Lagothrix lagothricha lagothricha) from northwestern Amazonia

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Abstract
Insects were recovered and identified from stomach contents of two Callicebus torquatus lugens and one Lagothrix lagothricha lagothricha collected in a remote area of northwestern Amazonia. Both C. torquatus lugens showed little insect matter in stomach contents. Conversely, a minimum of 133 individual insects were recovered from stomach contents of the L. lagothricha lagothricha. These included various larger, rapid forms (Cicadellidae) unlikely to have been inadvertently consumed while the animal was eating fruit.