Tlaconete regordete vs Agrion variable

Aquiloeurycea cephalica compared with Coenagrion pulchellum

Key Differences

• Tlaconete regordete is Least Concern while Agrion variable is Endangered.

Taxonomic Classification

Rank	Tlaconete regordete	Agrion variable
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (cordados)	Arthropoda (artrópodos)
Class	Amphibia (Amphibians)	Insecta (insecto)
Order	Caudata (Urodela)	Odonata (Odonata)
Family	Plethodontidae	Coenagrionidae
Genus	Aquiloeurycea	Coenagrion
Species	Aquiloeurycea cephalica	Coenagrion pulchellum

Evolutionary Relationship

Tlaconete regordete and Agrion variable share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Tlaconete regordete

LC — Least Concern

Agrion variable

EN — Endangered

Physical Characteristics

Attribute	Tlaconete regordete	Agrion variable
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Tlaconete regordete

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

Found in Mexico.

Agrion variable

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Luxembourg, Norway, and Sweden. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Tlaconete regordete

The Chunky False Brook Salamander (Aquiloeurycea cephalica) is a Least Concern plethodontid salamander endemic to Mexico, found in cloud forest and humid montane habitats in the Sierra Madre Oriental and related mountain ranges. The genus Aquiloeurycea is a recently erected Mexican endemic genus segregated from the broader genus Pseudoeurycea, comprising several small, robustly built (hence 'chunky') salamanders associated with high-elevation forests. Like all plethodontids, A. cephalica is a lungless salamander that breathes entirely through its moist, vascularized skin and the lining of its mouth. It is a direct developer, skipping the aquatic larval stage entirely and laying eggs in terrestrial microhabitats such as rotting logs, leaf litter, and soil. A. cephalica inhabits cool, humid forests of pine-oak and cloud forest zones in northern Mexico, where it forages for small invertebrates in the leaf litter and soil. The IUCN assesses it as Least Concern due to its reasonably wide distribution within its montane range. Deforestation, cattle grazing, and the conversion of cloud forest to agriculture represent ongoing threats to populations throughout its range.

Agrion variable

El Caballito Azul Variable (Coenagrion pulchellum) está clasificado como En Peligro (EN) en la Lista Roja de la UICN. En alto riesgo de extinción en estado silvestre, con declive poblacional significativo y amenazas continuas para su supervivencia.