Gray-bellied Night Monkey vs Red-tailed Monkey

Aotus lemurinus compared with Cercopithecus ascanius

Key Differences

• Gray-bellied Night Monkey is Vulnerable while Red-tailed Monkey is Least Concern.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Red-tailed Monkey
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order same	Primates (Primates)	Primates (Primates)
Family	Aotidae	Cercopithecidae (Old World Monkeys)
Genus	Aotus	Cercopithecus
Species	Aotus lemurinus	Cercopithecus ascanius

Evolutionary Relationship

Gray-bellied Night Monkey and Red-tailed Monkey share a common ancestor at the Order level: Primates. (Primates)

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Red-tailed Monkey

LC — Least Concern

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Red-tailed Monkey
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Gray-bellied Night Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Red-tailed Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.