Coimbra-Filho’s Titi vs Coues oryzomys

Callicebus coimbrai compared with Oryzomys couesi

Key Differences

• Coimbra-Filho’s Titi is Endangered while Coues oryzomys is Least Concern.

Taxonomic Classification

Rank	Coimbra-Filho’s Titi	Coues oryzomys
Kingdom same	Animalia (동물)	Animalia (동물)
Phylum same	Chordata (척삭동물)	Chordata (척삭동물)
Class same	Mammalia (포유류)	Mammalia (포유류)
Order	Primates (영장목)	Rodentia (설치류)
Family	Pitheciidae	Cricetidae
Genus	Callicebus	Oryzomys
Species	Callicebus coimbrai	Oryzomys couesi

Evolutionary Relationship

Coimbra-Filho’s Titi and Coues oryzomys share a common ancestor at the Class level: Mammalia. (포유류)

Conservation Status

Coimbra-Filho’s Titi

EN — Endangered

Coues oryzomys

LC — Least Concern

Physical Characteristics

Attribute	Coimbra-Filho’s Titi	Coues oryzomys
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Coimbra-Filho’s Titi

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Coues oryzomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

Coimbra-Filho’s Titi

The Coimbra-Filho's Titi (Callicebus coimbrai), also known as Coimbra-Filho's Titi Monkey, is a small New World monkey in the family Pitheciidae, named in honour of the Brazilian primatologist Adelmar F. Coimbra-Filho. This titi monkey is endemic to the Atlantic Forest of northeastern Brazil, with its range restricted to the states of Sergipe and southern Alagoas—one of the most critically fragmented and threatened biomes on Earth. Adults are small, with reddish-brown fur on the flanks and upperparts, pale grey on the underparts, and an orange-red forehead band. Like all titi monkeys, Callicebus coimbrai is highly social, living in monogamous family groups of 2–5 individuals that engage in elaborate dawn duets and tail-twining behaviour as expressions of pair bonding. The species inhabits Atlantic Forest fragments, including lowland and highland forest patches, riverine gallery forest, and secondary growth, where it subsists on fruits, seeds, leaves, and occasional invertebrates. The Coimbra-Filho's Titi is classified as Endangered by the IUCN due to its severely fragmented range within one of the world's most deforested biomes, with less than 12% of original Atlantic Forest remaining, ongoing habitat loss from agricultural expansion, and small, isolated population sizes highly vulnerable to stochastic extinction events.