Gray-bellied Night Monkey vs Indochinese Gray Langur

Aotus lemurinus compared with Trachypithecus crepusculus

Key Differences

• Gray-bellied Night Monkey is Vulnerable while Indochinese Gray Langur is Endangered.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Indochinese Gray Langur
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Mammalia (mamíferos)	Mammalia (mamíferos)
Order same	Primates (primatas)	Primates (primatas)
Family	Aotidae	Cercopithecidae (Old World Monkeys)
Genus	Aotus	Trachypithecus
Species	Aotus lemurinus	Trachypithecus crepusculus

Evolutionary Relationship

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

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Indochinese Gray Langur

EN — Endangered

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Indochinese Gray 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.

Indochinese Gray Langur

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.