Colombian red howler, Venezuelan red howler (Alouatta seniculus) Plate XVIII. Red Howler Alouatta senicula.
Date 1894
Source Handbook to the Primates, Vol. I. https://archive.org/details/handbooktoprimat01forbiala
Author Henry Ogg Forbes (1851-1932). Species Plates by John Gerrard Keulemans (1842–1912).
Source: https://commons.wikimedia.org/wiki/File:Handbook_to_the_Primates_Plate_18.jpg
The Colombian red howler or Venezuelan red howler (Alouatta seniculus) is a South American species of howler monkey, a type of New World monkey, found in the western Amazon Basin in Venezuela, Colombia, Ecuador, Peru and Brazil. The population in the Santa Cruz Department in Bolivia was split off as a separate species, the Bolivian red howler, in 1986, and more recently, splitting off the population in northeastern South America and Trinidad as the Guyanan red howler has occurred. All howler monkeys belong to the family Atelidae and the infraorder Platyrrhini (New World monkeys).
Order: Primates
Suborder: Haplorhini
Infraorder: Simiiformes
Family: Atelidae
Genus: Alouatta
Species: Alouatta seniculus (Linnaeus, 1766)
Synonyms: Simia seniculus Linnaeus, 1766