Coimbra-Filho’s Titi vs Eurasian red squirrel

Callicebus coimbrai compared with Sciurus vulgaris

Key Differences

• Coimbra-Filho’s Titi is Endangered while Eurasian red squirrel is Least Concern.

Taxonomic Classification

Rank	Coimbra-Filho’s Titi	Eurasian red squirrel
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Mammalia (哺乳類)	Mammalia (哺乳類)
Order	Primates (サル目)	Rodentia (ネズミ目)
Family	Pitheciidae	Sciuridae (Squirrels)
Genus	Callicebus	Sciurus (Tree Squirrels)
Species	Callicebus coimbrai	Sciurus vulgaris

Evolutionary Relationship

Coimbra-Filho’s Titi and Eurasian red squirrel share a common ancestor at the Class level: Mammalia. (哺乳類)

Conservation Status

Coimbra-Filho’s Titi

EN — Endangered

Eurasian red squirrel

LC — Least Concern

Physical Characteristics

Attribute	Coimbra-Filho’s Titi	Eurasian red squirrel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Coimbra-Filho’s Titi

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Eurasian red squirrel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found across Asia (Georgia) and Europe (5 countries).

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.

Eurasian red squirrel

キタリス（Sciurus vulgaris）はIUCNレッドリストで軽度懸念（LC）に分類されています。分布域全体にわたって広く生息し、個体数は安定しており、早急な保全上の懸念はありません。