Gray-bellied Night Monkey vs Mentawai Langur

Aotus lemurinus compared with Presbytis potenziani

Key Differences

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

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Mentawai 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	Presbytis
Species	Aotus lemurinus	Presbytis potenziani

Evolutionary Relationship

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

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Mentawai Langur

CR — Critically Endangered

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Mentawai 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.

Mentawai Langur

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.