Skip to content

38. Siau Island Tarsier

Tarsius tumpara


This tarsier is endemic to the tiny volcanic island of Siau, Indonesia.

The volcano forms the northern part of the island, known as Karangetang and is one of Indoensia’s most active volcanoes. The volcano takes up 50% of the island’s geographic range, shrinking the size of potential habitat for the Siau Island tarsier – which is exacerbated by the relatively large human population that has converted virtually the entire primary habitat to some form of human use. Furthermore, the Siau Island tarsier is regularly eaten, with up to 5-10 animals consumed in one sitting.

  • Order: Primates
  • Family: Tarsiidae
  • Population: 1,358-12,470
  • Trend: decreasing

EDGE Score

EDGE Score: 5.54 (?)
ED Score: 14.9 (?)
GE / IUCN Red List (?)
Not Evaluated Data Deficient Least Concern Near Threatened Vulnerable Endangered Critically Endangered Extinct in the Wild Extinct


Siau Island tarsier are only found on the volcanic Siau Island, Indonesia.

Habitat and Ecology

This species’ inhabit primary, secondary, and mangrove forests, forest gardens and a variety of other habitats of varying degrees of human disturbance that provide adequate shrubby cover. Their diet consists of mostly large-bodied arthropods, with some small vertebrates.

Find out more

Loading species distribution map...

This wordcloud illustrates the threats facing this species. The size of each word indicates the extent of a species range that is affected by that threat (larger size means a greater area is affected). The colour of the word indicates how much that threat impacts the species (darker shades of red mean the threat is more severe).

Volcanoes Crops Hunting Logging

Threat wordcloud key:

Small area affected
Large area affected
Least severe
Most severe
Severity unknown
Source: The IUCN List of Threatened Species. Version 2017.1.
Available at: