The emperor tamarin (Saguinus imperator), is a species of tamarin allegedly named for its resemblance to the German emperor Wilhelm II. It lives in the southwest Amazon Basin, in east Peru, north Bolivia and in the west Brazilian states of Acre and Amazonas.
Pied tamarins are also found in the adjacent rio Preto da Eva and rio Urubu interfluvium, but are comparatively rare. There appears to be interspecific competition between the pied tamarin and the red-handed tamarin with the red-handed tamarin gradually displacing the pied tamarin from areas of its historical distribution.
The red-handed tamarin (Saguinus midas), also known as the golden-handed tamarin or Midas tamarin, is a New World monkey named for the contrasting reddish-orange hair on its feet and hands. It is native to wooded areas north of the Amazon River in Brazil, Guyana, French Guiana, Suriname, and possibly Venezuela.
The white-footed tamarin (Saguinus leucopus) is a tamarin species endemic to Colombia. It is a silvery brown colour with pale streaks and russet underparts, and is very similar in appearance to the cotton-top tamarin, from which it is separated by the Atrato River.