Gray-bellied Night Monkey vs Rufous Spinetail

Aotus lemurinus compared with Synallaxis unirufa

Key Differences

• Gray-bellied Night Monkey is Vulnerable while Rufous Spinetail is Least Concern.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Rufous Spinetail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Primates (Primates)	Passeriformes (Songbirds)
Family	Aotidae	Furnariidae
Genus	Aotus	Synallaxis
Species	Aotus lemurinus	Synallaxis unirufa

Evolutionary Relationship

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

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Rufous Spinetail

LC — Least Concern

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Rufous Spinetail
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.

Rufous Spinetail

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Rufous Spinetail

Rufous Spinetail (Synallaxis unirufa) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 3 countries:

🇨🇴 Colombia 🇪🇨 Ecuador 🇻🇪 Venezuela