Gray-bellied Night Monkey vs Olive Spinetail

Aotus lemurinus compared with Cranioleuca obsoleta

Key Differences

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

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Olive 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	Cranioleuca
Species	Aotus lemurinus	Cranioleuca obsoleta

Evolutionary Relationship

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

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Olive Spinetail

LC — Least Concern

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Olive 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.

Olive Spinetail

Habitat

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

Range

Found in Norway.