Gray-bellied Night Monkey vs White-headed Marmoset

Aotus lemurinus compared with Callithrix geoffroyi

Key Differences

• Gray-bellied Night Monkey is Vulnerable while White-headed Marmoset is Least Concern.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	White-headed Marmoset
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	Callitrichidae
Genus	Aotus	Callithrix
Species	Aotus lemurinus	Callithrix geoffroyi

Evolutionary Relationship

Gray-bellied Night Monkey and White-headed Marmoset share a common ancestor at the Order level: Primates. (Primates)

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

White-headed Marmoset

LC — Least Concern

Physical Characteristics

Attribute	Gray-bellied Night Monkey	White-headed Marmoset
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.

White-headed Marmoset

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Brazil.