What are some of the nocturnal primates Indonesia?

There are several species of nocturnal primates found in Indonesia, including:

1. Slow Loris (Nycticebus): Found in Borneo and Sumatra, slow lorises are known for their slow movements and large eyes. They are arboreal and primarily active at night.

2. Tarsiers (Tarsius): Tarsiers are one of the smallest primates and can be found in Sulawesi and some of the smaller islands in Indonesia. They have large eyes, long tails, and are known for their ability to jump great distances.

3. Javan Langur (Trachypithecus auratus): Found in Java, the Javan langur is an arboreal primate active during both day and night.

4. Bornean Orangutan (Pongo pygmaeus): While orangutans are primarily diurnal, they have been known to exhibit some nocturnal behavior in certain areas of Borneo.