Proboscis Monkey - Taxonomy

Taxonomy

Proboscis monkeys belong to the Colobinae subfamily of the Old World monkeys. There are two subspecies:

• Nasalis larvatus larvatus (Wurmb, 1787), which occupies the whole range of the species;
• Nasalis larvatus orientalis (Chasen, 1940), restricted to north-east Kalimantan.

However, the difference between the subspecies is small, and not all authorities recognise N. l. orientalis.