Gray-bellied Night Monkey vs Laotian langur

Aotus lemurinus compared with Trachypithecus laotum

Key Differences

• Gray-bellied Night Monkey is Vulnerable while Laotian langur is Endangered.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Laotian langur
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class same	Mammalia (lớp Thú)	Mammalia (lớp Thú)
Order same	Primates (bộ Linh trưởng)	Primates (bộ Linh trưởng)
Family	Aotidae	Cercopithecidae (Old World Monkeys)
Genus	Aotus	Trachypithecus
Species	Aotus lemurinus	Trachypithecus laotum

Evolutionary Relationship

Gray-bellied Night Monkey and Laotian langur share a common ancestor at the Order level: Primates. (bộ Linh trưởng)

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Laotian langur

EN — Endangered

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Laotian 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.

Laotian langur

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.