Red Howler Monkey

Kingdom Order Family Genus Species
Animalia Primates Atelidae Alouatta Alouatta seniculus
Colombian Red Howler
IUCN Status: Least-Concern
  • Common Name: Colombian Red Howler
  • Taxonomy Classification Year: 1766
  • Monkey Size: 46 to 72 cm (18.1 to 28.35 in)
  • Skin Color(s): Dark red to brownish red
  • Habitat: Forest, rainforest
  • Diet: Herbivorous
  • Native Countries: Venezuela, Colombia, Ecuador, Peru, Brazil

Colombian Red Howler Distribution

Red Howler Monkey Characteristics

Red Howler Monkey

The Colombian red howler[1] or Venezuelan red howler is a South American species of howler monkey, a New World species of monkey found in the western Amazon basin.

  • Alouatta seniculus have a slight sexual dimorphism.
  • The females have a body length of 46 to 57 centimeters; the males, which are larger, have a body length of 49 to 72 cm.
  • Both sexes have a long prehensile tail of about 49 to 75 centimeters.
  • The coat color of this primate is dark reddish brown, although the hue slightly varies with age.
  • Colombian red howlers have large necks with massive jaws and hyoid bones, giving them a menacing expression.

What Do Colombian Red Howlers Eat?

What Do Red Howlers Eat? (Figs)

The Colombian Red Howler feeds on many plants and trees including[¶]:

  • Icecreambean (Inga edulis)
  • Guiana Brosimum (Brosimum guianense).
  • Caucho Rubber (Castilla ulei).
  • Hogplum (Spondias mombin)
  • Hinchahuevos (Sapium laurifolium)
  • Amarillo (Guatteria punctata)
  • Breadnut (Brosimum alicastrum)
  • Chalahuite (Inga acrocephala)
  • Maraximbé (Trichilia tuberculata)
  • Rabo De Ranton (Casearia aculeata).
  • Abiu (Pouteria caimito)
  • Cuero De Rana (Laetia procera).
  • Fig (Ficus)
  • Sweetwood (Nectandra membranacea)
  • American Muskwood (Guarea guidonia).
  • Guamo (Inga acreana)
  • Figueira-Acreana (Ficus sphenophylla)
  • Trichilia (Trichilia)
  • Pachiuba (Socratea exorrhiza)
  • Pacae Colorado (Inga alba).

Red Howler Monkey Facts

Alouatta Seniculus

  • Colombian red howler monkeys live in relatively large social groups composed of around 10 individuals, with just one or possibly two of the individuals being male.
  • They are best known for their ‘morning chorus’, a deafening roar that can be heard up to 5 kilometers away! This resounding howl, made primarily by the men of a group, is answered by all other howler groups within earshot.
  • Due to such an unbalanced male-to-female ratio, there is intense sexual competition between and within the Colombian red howler family groups.
  • Males and females sometimes form consortships, an unusually close spatial relationship before any sexual exchange begins.
  • Due to its relatively large size, Alouatta seniculus is hunted for food and other howler species and exported commercially.

Suggested Reading: Common Monkey Names

Cite This Page

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BioExplorer.net. (2022, December 03). Red Howler Monkey. Bio Explorer. https://www.bioexplorer.net/animals/mammals/monkeys/red-howler-monkey/.
BioExplorer.net. "Red Howler Monkey" Bio Explorer, 03 December 2022, https://www.bioexplorer.net/animals/mammals/monkeys/red-howler-monkey/.
BioExplorer.net. "Red Howler Monkey" Bio Explorer, December 03 2022. https://www.bioexplorer.net/animals/mammals/monkeys/red-howler-monkey/.
Key References
  • [1]“Digimorph – Alouatta seniculus (red howler monkey)”. Accessed August 24, 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/Palm-Frugivore_Interactions_Neo-AfrotropicsStevenson, Pablo R.; Link, Andres; Gonzalez-Caro, Sebastian; Fernanda Torres-Jimenez, Maria. 2015. Frugivory in Canopy Plants in a Western Amazonian Forest: Dispersal Systems, Phylogenetic Ensembles and Keystone Plants. Plos One. e0140751

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