Black-headed Night Monkey vs Humboldt's Squirrel Monkey

Aotus nigriceps compared with Saimiri cassiquiarensis

Key Differences

• Black-headed Night Monkey is Least Concern while Humboldt's Squirrel Monkey is Near Threatened.

Taxonomic Classification

Rank	Black-headed Night Monkey	Humboldt's Squirrel 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	Cebidae
Genus	Aotus	Saimiri
Species	Aotus nigriceps	Saimiri cassiquiarensis

Evolutionary Relationship

Black-headed Night Monkey and Humboldt's Squirrel Monkey share a common ancestor at the Order level: Primates. (Primates)

Conservation Status

Black-headed Night Monkey

LC — Least Concern

Humboldt's Squirrel Monkey

NT — Near Threatened

Physical Characteristics

Attribute	Black-headed Night Monkey	Humboldt's Squirrel Monkey
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-headed Night Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Humboldt's Squirrel Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Ecuador. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Black-headed Night Monkey

The Black-headed Night Monkey (Aotus nigriceps) is a species in the genus Aotus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.