Gray-bellied Night Monkey vs Long-billed Crombec

Aotus lemurinus compared with Sylvietta rufescens

Key Differences

• Gray-bellied Night Monkey is Vulnerable while Long-billed Crombec is Least Concern.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Long-billed Crombec
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Primates (Primates)	Passeriformes (Songbirds)
Family	Aotidae	Macrosphenidae
Genus	Aotus	Sylvietta
Species	Aotus lemurinus	Sylvietta rufescens

Evolutionary Relationship

Gray-bellied Night Monkey and Long-billed Crombec share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Long-billed Crombec

LC — Least Concern

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Long-billed Crombec
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.

Long-billed Crombec

Habitat

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

Range

Found in Norway.