Crab Eating Macaque

Kingdom Order Family Genus Species
Animalia Primates Cercopithecidae Macaca Macaca fascicularis
Crab-eating Macaque
IUCN Status: Vulnerable
  • Common Name: Crab-eating Macaque
  • Taxonomy Classification Year: 1821
  • Monkey Size: 40 to 47 cm (15.75 to 18.50 in)
  • Skin Color(s): Gray or red-brown
  • Habitat: Forest, rainforest, scrub forest
  • Diet: Omnivorous
  • Native Countries: Myanmar, Philippines, Malaysia, Indonesia, Thailand

Crab-eating Macaque Distribution

Crab-Eating Macaque Characteristics

Crab Eating Macaque

The crab-eating macaque[1], also called the long-tailed macaque and known in laboratories as the cynomolgus monkey, is a primate monkey endemic to Southeast Asia.

  • The body fur of long-tailed macaques is usually gray-brown to red-brown. These colors are always lighter ventrally.
  • The face is brownish gray with whiskers on the cheeks. The eyes of these Asian monkeys are directed forward for binocular vision.
  • With a flatter nose and narrow nostrils, Crab-eating macaques have shovel-shaped incisors, prominent canines, and bilophodont molars.
  • The gray-brown or reddish tail measures 50-60 cm. Crab-eating macaques show sexual dimorphism in their sizes.
  • The average weight of males is 4.8-7 kg, and that of females 3-4 kg, about 69% of the average weight of males.

What Do Crab-eating Macaques Eat?

What Do Crab Eating Macaques Eat?

The Crab-eating Macaques consume many plant/tree sources including[¶]:

  • Monkey Jack (Artocarpus rigidus).
  • Pulasan (Nephelium lappaceum)
  • Fig (Ficus)
  • Bishopwood (Bischofia javanica)
  • Cowa Fruit (Garcinia cowa).
  • Jacareuba (Calophyllum brasiliense)
  • Weeping Fig (Ficus benjamina).
  • Clustertree (Ficus racemosa)
  • Javanese Treebine (Cissus nodosa).
  • Argus Pheasant Tree (Dracontomelon dao).
  • Council Tree (Ficus altissima).
  • Oriental Trema (Trema orientalis).
  • Ilang-Ilang (Cananga odorata)
  • Brown-Woolly Fig (Ficus drupacea).
  • Parasol Leaf Tree (Macaranga tanarius).
  • Myrobalan (Terminalia bellirica)
  • Abas (Psidium guajava)
  • Chempedak (Artocarpus integer)
  • Kaurasiga (Clidemia hirta)
  • Malabar Melastome (Melastoma malabathricum).
  • Betel Palm (Areca catechu).
  • Keruing (Dipterocarpus caudatus)
  • Durian (Durio zibethinus)
  • Redberry Stopper (Eugenia confusa).
  • Bachang (Mangifera foetida)
  • Golden Bellapple (Passiflora laurifolia).
  • Tanoak (Lithocarpus)
  • Carambola (Averrhoa carambola)
  • Auri (Acaciaia auriculiformis)
  • Common Rengas (Gluta wallichii).
  • Starrush Whitetop (Rhynchospora colorata).
  • Sea Apple (Syzygium grande).
  • Mango (Mangifera indica)
  • Bitter Cassava (Manihot esculenta).
  • Kwini (Mangifera odorata)
  • Agarwood (Aquilaria malaccensis)
  • African Oil Palm (Elaeis guineensis).
  • Jackfruit (Artocarpus heterophyllus)
  • Yam (Dioscorea)
  • Dark Red Meranti (Shorea curtisii).
  • Barrelier’s Woodsorrel (Oxalis barrelieri).
  • Rattan (Calamus rotang)
  • Coconut Palm (Cocos nucifera).
  • Moonlight Cactus (Selenicereus)

Crab-Eating Macaque Facts

Macaca Fascicularis

  • Crab-eating macaque macaques live in multi-male groups comprising around 30 members.
  • As with all primates, there is a long period of juvenile dependence. The females are the ones that take the most care of the young.
  • Despite aggression between males, this species is characterized by a general lack of aggression between groups.
  • Within groups, males develop a strictly linear dominance hierarchy. This hierarchy is determined by size, age, and combat ability.
  • These macaques are unique among other nonhuman primates due to their ability to display cultural or learned behaviors. This cultural behavior has been observed in the food preparation of crab-eating macaques.

Suggested Reading: Different Species of Monkeys

Cite This Page

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BioExplorer.net. (2022, October 02). Crab-Eating Macaque. Bio Explorer. https://www.bioexplorer.net/animals/mammals/monkeys/crab-eating-macaque/.
BioExplorer.net. "Crab-Eating Macaque" Bio Explorer, 02 October 2022, https://www.bioexplorer.net/animals/mammals/monkeys/crab-eating-macaque/.
BioExplorer.net. "Crab-Eating Macaque" Bio Explorer, October 02 2022. https://www.bioexplorer.net/animals/mammals/monkeys/crab-eating-macaque/.
Key References
  • [1]“Macaca fascicularis (crab-eating macaque)”. Accessed August 27, 2022. Link.
  • [¶] – Fricke, E.C., Svenning, J. Accelerating homogenization of the global plant-frugivore meta-network. Nature 585, 74-78 (2020). https://doi.org/10.1038/s41586-020-2640-y.
  • [¶] – fgabriel1891/Plant-Frugivore-Interactions-SouthEastAsia10.3106/041.035.0307
  • [¶] – fgabriel1891/Plant-Frugivore-Interactions-SouthEastAsia10.1002/(SICI)1098-2345(1998)45:1<29::AID-AJP4>3.0.CO;2-Y
  • [¶] – fgabriel1891/Plant-Frugivore-Interactions-SouthEastAsia10.1159/000156587
  • [¶] – fgabriel1891/Plant-Frugivore-Interactions-SouthEastAsia10.4308/hjb.14.1.13

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