Coimbra-Filho’s Titi vs Eastern Willow Spreadwing

Callicebus coimbrai compared with Chalcolestes parvidens

Key Differences

• Coimbra-Filho’s Titi is Endangered while Eastern Willow Spreadwing is Least Concern.

Taxonomic Classification

Rank	Coimbra-Filho’s Titi	Eastern Willow Spreadwing
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Insecta (Insects)
Order	Primates (Primates)	Odonata (Odonata)
Family	Pitheciidae	Lestidae
Genus	Callicebus	Chalcolestes
Species	Callicebus coimbrai	Chalcolestes parvidens

Evolutionary Relationship

Coimbra-Filho’s Titi and Eastern Willow Spreadwing share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Coimbra-Filho’s Titi

EN — Endangered

Eastern Willow Spreadwing

LC — Least Concern

Physical Characteristics

Attribute	Coimbra-Filho’s Titi	Eastern Willow Spreadwing
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Coimbra-Filho’s Titi

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Eastern Willow Spreadwing

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

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.