Formosan rock macaque vs Gray-bellied Night Monkey

Macaca cyclopis compared with Aotus lemurinus

Key Differences

• Formosan rock macaque is Least Concern while Gray-bellied Night Monkey is Vulnerable.

Taxonomic Classification

Rank	Formosan rock macaque	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	Cercopithecidae (Old World Monkeys)	Aotidae
Genus	Macaca	Aotus
Species	Macaca cyclopis	Aotus lemurinus

Evolutionary Relationship

Formosan rock macaque and Gray-bellied Night Monkey share a common ancestor at the Order level: Primates. (Primates)

Conservation Status

Formosan rock macaque

LC — Least Concern

Gray-bellied Night Monkey

VU — Vulnerable

Physical Characteristics

Attribute	Formosan rock macaque	Gray-bellied Night Monkey
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Formosan rock macaque

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Japan and Taiwan.

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.