Amazon Black Howler vs Gray-bellied Night Monkey

Alouatta nigerrima compared with Aotus lemurinus

Key Differences

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

Taxonomic Classification

Rank	Amazon Black Howler	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	Atelidae	Aotidae
Genus	Alouatta	Aotus
Species	Alouatta nigerrima	Aotus lemurinus

Evolutionary Relationship

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

Conservation Status

Amazon Black Howler

LC — Least Concern

Gray-bellied Night Monkey

VU — Vulnerable

Physical Characteristics

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

Habitat & Geographic Range

Amazon Black Howler

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.

Amazon Black Howler

The Amazon Black Howler (Alouatta nigerrima) is a species in the genus Alouatta. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.