MorphologyRead full entry
The head and body measure from 20.5 to 28 cm, the tail from 31.5 to 44 cm. There is no obvious sexual dimorphism. The face is black with long hairs. It does not have the whitish fur around the mouth that is characteristic of other tamarins in the long-tusked tamarin group. The body is also black, except for the hands and feet, which are orange-red or yellow. There are claws on all digits except for the big toe, which has the flattened nail characteristic of primates. Also, the thumb lacks a saddle joint and is not opposable. There are specialized scent glands in the midchest and around the genitalia, the secretions of which are used to mark territory and convey information about identity, status, and sexual receptivity of individuals.
Range mass: 400 to 550 g.
Other Physical Features: endothermic ; bilateral symmetry