Black-capped Squirrel Monkey vs Brown Spider Monkey

Saimiri boliviensis compared with Ateles hybridus

Key Differences

• Black-capped Squirrel Monkey is Least Concern while Brown Spider Monkey is Critically Endangered.

Taxonomic Classification

Rank	Black-capped Squirrel Monkey	Brown Spider Monkey
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (mammifères)	Mammalia (mammifères)
Order same	Primates (Primates)	Primates (Primates)
Family	Cebidae	Atelidae
Genus	Saimiri	Ateles
Species	Saimiri boliviensis	Ateles hybridus

Evolutionary Relationship

Black-capped Squirrel Monkey and Brown Spider Monkey share a common ancestor at the Order level: Primates. (Primates)

Conservation Status

Black-capped Squirrel Monkey

LC — Least Concern

Brown Spider Monkey

CR — Critically Endangered

Physical Characteristics

Attribute	Black-capped Squirrel Monkey	Brown Spider Monkey
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-capped Squirrel Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Brown Spider Monkey

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 6 distinct biome types spanning the Neotropic and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Colombia and Venezuela. Currently classified as Critically Endangered 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.

Brown Spider Monkey

The Brown Spider Monkey (Ateles hybridus) is a species in the genus Ateles. It is currently classified as Critically Endangered on the IUCN Red List. Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 6 distinct biome types spanning the