---
title: "Bleekdijlangoer"
description: "Presbytis siamensis — Zoogdieren. The white-thighed surili (Presbytis siamensis) is a species of primate from the family of old world monkeys (Cercopithecidae)."
canonical: https://animalchecklist.com/nl/animal/white-thighed-surili
last_updated: 2026-09-20
---

# Bleekdijlangoer

> Presbytis siamensis — Zoogdieren. The white-thighed surili (Presbytis siamensis) is a species of primate from the family of old world monkeys (Cercopithecidae).

- Scientific name: *Presbytis siamensis*
- Category: `mammals` (Zoogdieren)
- Habitats: `forest` (Bos), `jungle` (Jungle)
- iNaturalist observations: 974
- Wikidata: [Q1365651](https://www.wikidata.org/wiki/Q1365651)
- iNaturalist taxon: [74946](https://www.inaturalist.org/taxa/74946)

## Names

- en: White-thighed Surili
- de: Weißschenkliger Langur
- es: Surili de muslos blancos
- fr: Semnopithèque du Siam
- nl: Bleekdijlangoer

## Countries with the most observations

MY (881), TH (24), ID (23)

## Summary

The white-thighed surili (Presbytis siamensis) is a species of primate from the family of old world monkeys (Cercopithecidae). This species lives arboreal amongst the sub-montane forests. It is endemic to the Thai-Malay Peninsula, the Riau Archipelago and Sumatra. In addition, the white-thighed surili contain four subspecies: siamensis (nominate), cana, paenulata and rhionis, are recognized here. Furthermore, they are characterized by the white patches located on the outside of their legs, which is what gives them their name. Additionally, they can be referred to as pale-thighed langur/surili. These primates are an…

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/White-thighed_surili

## Photo

![Bleekdijlangoer](https://animalchecklist.com/img/animals/white-thighed-surili/medium.jpg)

Photo: Al Kordesch · CC0 · inaturalist — https://www.inaturalist.org/observations/15040706

## Machine access

`GET https://animalchecklist.com/api/v1/animals/white-thighed-surili?lang=nl` — see [openapi.json](https://animalchecklist.com/openapi.json).