Gray-bellied Night Monkey vs Spix s Night Monkey

Aotus lemurinus compared with Aotus vociferans

Key Differences

• Gray-bellied Night Monkey is Vulnerable while Spix s Night Monkey is Least Concern.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Spix s Night Monkey
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class same	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order same	Primates (อันดับวานร)	Primates (อันดับวานร)
Family same	Aotidae	Aotidae
Genus same	Aotus	Aotus
Species	Aotus lemurinus	Aotus vociferans

Evolutionary Relationship

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

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Spix s Night Monkey

LC — Least Concern

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Spix s Night Monkey
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.

Spix s Night Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Ecuador.

Shared Countries

Both species can be found in 2 countries:

🇨🇴 Colombia 🇪🇨 Ecuador