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Colombian woolly monkey
Conservation status
Critically Endangered  (IUCN 3.1)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Primates
Suborder:	Haplorhini
Infraorder:	Simiiformes
Family:	Atelidae
Genus:	Lagothrix
Species:	L. lagothricha
Subspecies:	L. l. lugens
Trinomial name
Lagothrix lagothricha lugens Elliot, 1907
Colombian woolly monkey range
Synonyms
Lagothrix lugens

The Colombian woolly monkey (Lagothrix lagothricha lugens) is a critically endangered subspecies of the common woolly monkey from Colombia.

It was initially thought to be a subspecies of the common woolly monkey (L. lagothricha), but was later reclassified as its own species. However, a 2014 phylogenetic study found it to in fact be a subspecies of L. lagothricha; the results of this study have been followed by the American Society of Mammalogists and the IUCN Red List.

Among all ateline primates, Colombian woolly monkeys exhibit the most sexual dimorphism in body size. Males are about forty-five percent heavier than their female counterparts. However, the cause of this dimorphism remains an enigma as there are no apparent female choice in favor of larger males. In fact, mating amongst Colombian woolly monkeys is promiscuous in that all adult and subadult males in a group mate with each female in estrous, and male-male rivalries in the context of mating are very rare.

References

1. Groves, C. P. (2005). Wilson, D. E.; Reeder, D. M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Baltimore: Johns Hopkins University Press. p. 152. ISBN 0-801-88221-4. OCLC 62265494.
2. Stevenson, P.R.; Link, A. & Guzmán-Caro, D.C. (2021). "Lagothrix lagothricha ssp. lugens". IUCN Red List of Threatened Species. 2021: e.T39926A192308084. doi:10.2305/IUCN.UK.2021-1.RLTS.T39926A192308084.en.
3. Ruiz-García, Manuel; Pinedo-Castro, Myreya; Shostell, Joseph Mark (2014-10-01). "How many genera and species of woolly monkeys (Atelidae, Platyrrhine, Primates) are there? The first molecular analysis of Lagothrix flavicauda, an endemic Peruvian primate species". Molecular Phylogenetics and Evolution. 79: 179–198. doi:10.1016/j.ympev.2014.05.034. ISSN 1055-7903. PMID 24931730.
4. "ITIS - Report: Lagothrix". www.itis.gov. Retrieved 2021-11-20.
5. Database, Mammal Diversity (2021-11-06), Mammal Diversity Database, doi:10.5281/zenodo.5651212, retrieved 2021-11-20
6. ^ Stevenson, P. R. (2006). "Activity and ranging patterns of Colombian woolly monkeys in north-western Amazonia". Primates. 47 (3): 239–247. doi:10.1007/s10329-005-0172-6. PMID 16505944. S2CID 10831742.

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• IUCN Red List critically endangered species
• Woolly monkeys
• Subspecies
• Mammals of the Andes
• Mammals of Colombia
• Endemic fauna of Colombia
• Critically endangered animals
• Critically endangered biota of South America
• Mammals described in 1907
• Taxa named by Daniel Giraud Elliot
• New World monkey stubs