Gray-bellied Night Monkey vs Olive-crowned Crescentchest

Aotus lemurinus compared with Melanopareia maximiliani

Key Differences

• Gray-bellied Night Monkey is Vulnerable while Olive-crowned Crescentchest is Least Concern.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Olive-crowned Crescentchest
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Primates (Primates)	Passeriformes (Songbirds)
Family	Aotidae	Melanopareiidae
Genus	Aotus	Melanopareia
Species	Aotus lemurinus	Melanopareia maximiliani

Evolutionary Relationship

Gray-bellied Night Monkey and Olive-crowned Crescentchest share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Olive-crowned Crescentchest

LC — Least Concern

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Olive-crowned Crescentchest
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.

Olive-crowned Crescentchest

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found in Norway.