The banded surili is a species of primate

Primate

A primate is a mammal of the order Primates , which contains prosimians and simians. Primates arose from ancestors that lived in the trees of tropical forests; many primate characteristics represent adaptations to life in this challenging three-dimensional environment...

 in the Cercopithecidae family. It is endemic to the Thai-Malay Peninsula and the Indonesia

Indonesia

Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

 island of Sumatra

Sumatra

Sumatra is an island in western Indonesia, westernmost of the Sunda Islands. It is the largest island entirely in Indonesia , and the sixth largest island in the world at 473,481 km2 with a population of 50,365,538...

. It is threatened by habitat loss. Three subspecies

Subspecies

Subspecies in biological classification, is either a taxonomic rank subordinate to species, ora taxonomic unit in that rank . A subspecies cannot be recognized in isolation: a species will either be recognized as having no subspecies at all or two or more, never just one...

, femoralis (nominate), robinsoni and percura, are recognized here, but the taxonomy

Taxonomy

Taxonomy is the science of identifying and naming species, and arranging them into a classification. The field of taxonomy, sometimes referred to as "biological taxonomy", revolves around the description and use of taxonomic units, known as taxa...

 is complex and disputed, and it has also included P. natunae

Natuna Island Surili

The Natuna Island surili is a species of primate in the Cercopithecidae family. It is endemic to the Indonesian island of Natuna Besar. It was separated from P. siamensis by Groves in 2001....

, P. siamensis

White-thighed Surili

The white-thighed surili is a species of primate in the Cercopithecidae family. It is endemic to the Thai-Malay Peninsula, the Riau Archipelago and Sumatra. Four subspecies, siamensis , cana, paenulata and rhionis, are recognized here, but the taxonomy is disputed and in need of a review, and it...

and P. chrysomelas

Sarawak Surili

The Sarawak surili is a species of primate in the Cercopithecidae family. It is endemic to the southeast Asian island of Borneo, where it is distributed north of the Kapuas River in Kalimantan, Indonesia, the Malaysia states of Sarawak and Sabah, and in Brunei. Its taxonomy is complex and...

as subspecies, or alternatively all these (including P. femoralis) have been considered subspecies of P. melalophos

Sumatran Surili

The Sumatran surili is a species of primate in the Cercopithecidae family. It is endemic to Sumatra in Indonesia. Its natural habitat is subtropical or tropical dry forests. It is threatened by habitat loss.-External links:...

. It is diurnal and eats fruit.

In Singapore, the banded leaf monkey is critically endangered with a population of approximately 40 individuals left in the Central Catchment Nature Reserve

Central Catchment Nature Reserve

The Central Catchment Nature Reserve is the largest nature reserve in Singapore, occupying 2889 hectares Forming a large green lung in the geographical centre of the city, it houses several recreational sites, including the Singapore Zoo and the Night Safari, as well as several newer facilities...

. The National Biodiversity Centre, in partnership with the Evolution Lab of the National University of Singapore

National University of Singapore

The National University of Singapore is Singapore's oldest university. It is the largest university in the country in terms of student enrollment and curriculum offered....

, launched an ecological study to determine suitable conservation strategies.