#0226 · 🦊 mammals
Long-tailed Macaque
🇳🇱 Java-aap ·Macaca fascicularis
10 photos from iNaturalist (Creative Commons) · credits & licences
- 1. © Benjamin Koh · CC BY-NC 4.0
- 2. © Subir B. Shakya · CC BY 4.0
- 3. © Robert Gowan · CC BY-NC 4.0
- 4. © datadan · CC BY 4.0
- 5. © Josh van der Meulen · CC BY-NC-ND 4.0
- 6. Indonesia:© Albert Kang · CC BY-NC 4.0
- 7. © wildpokedex · CC BY-NC-ND 4.0
- 8. © Tan Kok Hui · CC BY-NC 4.0
- 9. © Ira Han · CC BY-NC 4.0
- 10. © Jens Sommer-Knudsen · CC BY-NC 4.0
what is it?
The crab-eating macaque ( Macaca fascicularis ), also known as the long-tailed macaque and referred to as the cynomolgus monkey in laboratories, is a cercopithecine primate native to Southeast Asia. A species of macaque, the crab-eating macaque has a long history alongside humans; it has been alternately seen as an agricultural pest, sacred animal in some temples, and more recently, the subject of medical experiments.
base stats
Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).
fun facts
- No confirmed wild sightings in the Netherlands on iNaturalist: you'd have to travel for this one.
- 25,605 observations worldwide on iNaturalist.
- Scientifically named by Thomas Stamford Raffles in 1821 (205 years ago).
- Listed as Endangered on the IUCN Red List.
fact sheet
- English
- Long-tailed Macaque
- Nederlands
- Java-aap
- scientific name
- Macaca fascicularis
- class
- Mammalia
- order
- Primates
- family
- Cercopithecidae
- IUCN Red List
- EN · endangered
- sightings in NL
- 0
- sightings worldwide
- 25,605
- GBIF records in NL
- 0
- weight
- —
- length
- —
- lifespan
- —
- named
- 1821 by Thomas Stamford Raffles
IUCN in Dutch: bedreigd. Blank means the sources don't say.
relatives· Cercopithecidae
#0246 📷 10Vervet Monkey
🇳🇱 Vervet
Chlorocebus pygerythrus
LC 🌍 14.3k seen
#0258 📷 9Chacma Baboon
🇳🇱 Beerbaviaan
Papio ursinus
LC 🌍 11.9k seen
#0263 📷 9Rhesus Macaque
🇳🇱 Resusaap
Macaca mulatta
LC 🌍 11.1k seen
#0297 📷 10Olive Baboon
🇳🇱 Anubisbaviaan
Papio anubis
LC 🌍 7.1k seen
#0300 📷 9Formosan Rock Macaque
🇳🇱 Formosamakaak
Macaca cyclopis
LC 🌍 7.1k seen
#0326 📷 7Dusky Leaf Monkey
🇳🇱 Brillangoer
Trachypithecus obscurus
EN 🌍 5.2k seen
#0333 📷 10Blue Monkey
🇳🇱 Diadeemmeerkat
Cercopithecus mitis
LC 🌍 5.1k seen
#0340 📷 9Bonnet Macaque
🇳🇱 Indische Kroonaap
Macaca radiata
VU 🌍 4.7k seen
Sources: iNaturalist taxon 43459, Wikidata Q301676, GBIF 2436603, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.
