Definition
A 'true marmoset' refers to marmosets belonging to the genus Callithrix. They are small New World monkeys characterized by their claw-like nails and distinctive tufts of hair around their ears. 'True marmosets' inhabit the rainforests of South America. They are arboreal and live in small family groups. They have a diet consisting of insects, fruits, and tree sap. 'True marmoset' distinguishes these marmosets from other closely related species.