bare-eared squirrel monkey vs common squirrel monkey

Saimiri ustus compared with Saimiri sciureus

Key Differences

• bare-eared squirrel monkey is Near Threatened while common squirrel monkey is Least Concern.

Taxonomic Classification

Rank	bare-eared squirrel monkey	common squirrel monkey
Kingdom same	Animalia (hewan)	Animalia (hewan)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (mamalia)	Mammalia (mamalia)
Order same	Primates (Primata)	Primates (Primata)
Family same	Cebidae	Cebidae
Genus same	Saimiri	Saimiri
Species	Saimiri ustus	Saimiri sciureus

Evolutionary Relationship

bare-eared squirrel monkey and common squirrel monkey share a common ancestor at the Genus level: Saimiri.

Conservation Status

bare-eared squirrel monkey

NT — Near Threatened

common squirrel monkey

LC — Least Concern

Physical Characteristics

Attribute	bare-eared squirrel monkey	common squirrel monkey
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

bare-eared squirrel monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

common squirrel monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Brazil, Colombia, Japan, and Venezuela.

bare-eared squirrel monkey

The Bare-eared squirrel monkey (Saimiri ustus) is a species in the genus Saimiri. It is currently classified as Near Threatened on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

common squirrel monkey

<em>Saimiri sciureus</em>, commonly known as the common squirrel monkey, is a small New World monkey in the family Cebidae, widely distributed across the tropical forests of South America. This species typically inhabits lowland tropical rainforests, riverine forests, secondary forests, and forest edges from sea level to approximately 2,000 metres elevation, showing a preference for lower forest strata and forest margins. Its geographic range spans the Amazon Basin, extending through Brazil, Peru, Colombia, Venezuela, Guyana, Bolivia, and adjacent countries. Classified as Least Concern on the IUCN Red List, <em>Saimiri sciureus</em> is among the most abundant primates across much of Amazonia, though local populations face pressures from deforestation and the pet trade. The species is highly social, typically forming troops of 10–75 individuals that forage actively during daylight hours. It is omnivorous, typically feeding on insects, fruit, nectar, small vertebrates, and bird eggs, with insects comprising a major proportion of the diet. Adults typically reach a body length of approximately 25–37 cm with a tail length of 37–47 cm, and body weight typically ranges from approximately 600–1,100 g. Average lifespan in the wild is typically around 15–20 years.