Black-headed Night Monkey vs Gray-bellied Night Monkey

Aotus nigriceps compared with Aotus lemurinus

Key Differences

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

Taxonomic Classification

Rank	Black-headed Night Monkey	Gray-bellied Night Monkey
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Mammalia (哺乳類)	Mammalia (哺乳類)
Order same	Primates (サル目)	Primates (サル目)
Family same	Aotidae	Aotidae
Genus same	Aotus	Aotus
Species	Aotus nigriceps	Aotus lemurinus

Evolutionary Relationship

Black-headed Night Monkey and Gray-bellied Night Monkey share a common ancestor at the Genus level: Aotus.

Conservation Status

Black-headed Night Monkey

LC — Least Concern

Gray-bellied Night Monkey

VU — Vulnerable

Physical Characteristics

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

Habitat & Geographic Range

Black-headed Night 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-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.