Species Name: Trachypithecus auratus
The East Javan langur, also called the Javan lutung, Javan langur, or ebony langur is an Old-World primate in the subfamily Colobinae. As with all langurs, the East Javan langur is a social animal, living in groups of about 7 individuals, with 1 or 2 adult males in the group.
Species Name: Presbytis percura
The East Sumatran banded langur also called the East Sumatran banded surili are primarily found in the fragmented landscape of pulp and rubber plantations. These surilis are shy and alert creatures, rarely leaving the comfort of their canopies.
Species Name: Cebuella niveiventris
The eastern pygmy marmoset is a species of marmoset, a tiny New World monkey found in the southwestern Amazon rainforest. Notably, at just over 100 grams (3.5 ounces), the eastern pygmy marmoset is the smallest monkey and among the smallest primates in the world.
Suggested Reading: All Monkey Species