Black-capped Squirrel Monkey vs Gray-bellied Night Monkey

Saimiri boliviensis compared with Aotus lemurinus

Key Differences

• Black-capped Squirrel Monkey is Least Concern while Gray-bellied Night Monkey is Vulnerable.

Taxonomic Classification

Rank	Black-capped Squirrel Monkey	Gray-bellied Night 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	Cebidae	Aotidae
Genus	Saimiri	Aotus
Species	Saimiri boliviensis	Aotus lemurinus

Evolutionary Relationship

Black-capped Squirrel Monkey and Gray-bellied Night Monkey share a common ancestor at the Order level: Primates. (Primates)

Conservation Status

Black-capped Squirrel Monkey

LC — Least Concern

Gray-bellied Night Monkey

VU — Vulnerable

Physical Characteristics

Attribute	Black-capped Squirrel Monkey	Gray-bellied Night Monkey
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-capped Squirrel Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.

Black-capped Squirrel Monkey

The Black-capped Squirrel Monkey (Saimiri boliviensis) is a species in the genus Saimiri. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.