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 (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class same	Mammalia (哺乳動物)	Mammalia (哺乳動物)
Order same	Primates (灵长目)	Primates (灵长目)
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. (灵长目)

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.