Admirable False Brook Salamander vs Coimbra-Filho’s Titi

Aquiloeurycea praecellens compared with Callicebus coimbrai

Key Differences

• Admirable False Brook Salamander is Critically Endangered while Coimbra-Filho’s Titi is Endangered.

Taxonomic Classification

Rank	Admirable False Brook Salamander	Coimbra-Filho’s Titi
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class	Amphibia (Amphibians)	Mammalia (mamíferos)
Order	Caudata (Urodela)	Primates (Primates)
Family	Plethodontidae	Pitheciidae
Genus	Aquiloeurycea	Callicebus
Species	Aquiloeurycea praecellens	Callicebus coimbrai

Evolutionary Relationship

Admirable False Brook Salamander and Coimbra-Filho’s Titi share a common ancestor at the Phylum level: Chordata. (cordados)

Conservation Status

Admirable False Brook Salamander

CR — Critically Endangered

Coimbra-Filho’s Titi

EN — Endangered

Physical Characteristics

Attribute	Admirable False Brook Salamander	Coimbra-Filho’s Titi
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Admirable False Brook Salamander

Habitat

Found across multiple habitat types including tropical and subtropical coniferous forests, tropical and subtropical grasslands and savannas, and Mediterranean forests and woodlands, among 6 distinct biome types spanning the Nearctic and Neotropic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Mexico. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Coimbra-Filho’s Titi

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Admirable False Brook Salamander

The Admirable False Brook Salamander (Aquiloeurycea praecellens) is a species in the genus Aquiloeurycea. It is currently classified as Critically Endangered on the IUCN Red List. Found across multiple habitat types including tropical and subtropical coniferous forests, tropical and subtropical grasslands and savannas, and Mediterranean forests and woodlands, among 6 distinct biome types spanning the Nearctic and Neo.

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.