Gray-bellied Night Monkey vs Gray-shanked Douc Langur

Aotus lemurinus compared with Pygathrix cinerea

Key Differences

• Gray-bellied Night Monkey is Vulnerable while Gray-shanked Douc Langur is Critically Endangered.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Gray-shanked Douc Langur
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order same	Primates (Primates)	Primates (Primates)
Family	Aotidae	Cercopithecidae (Old World Monkeys)
Genus	Aotus	Pygathrix
Species	Aotus lemurinus	Pygathrix cinerea

Evolutionary Relationship

Gray-bellied Night Monkey and Gray-shanked Douc Langur share a common ancestor at the Order level: Primates. (Primates)

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Gray-shanked Douc Langur

CR — Critically Endangered

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Gray-shanked Douc Langur
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.

Gray-shanked Douc Langur

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.