Gray-bellied Night Monkey vs Round ray

Aotus lemurinus compared with Irolita waitii

Key Differences

• Gray-bellied Night Monkey is Vulnerable while Round ray is Least Concern.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Round ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Primates (Primates)	Rajiformes (Rajiformes)
Family	Aotidae	Arhynchobatidae
Genus	Aotus	Irolita
Species	Aotus lemurinus	Irolita waitii

Evolutionary Relationship

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

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Round ray

LC — Least Concern

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Round ray
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.

Round ray