La Selle Dusky Frog vs Long-tailed Sylph

Eleutherodactylus jugans compared with Aglaiocercus kingii

Key Differences

• La Selle Dusky Frog is Critically Endangered while Long-tailed Sylph is Least Concern.

Taxonomic Classification

Rank	La Selle Dusky Frog	Long-tailed Sylph
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Amphibia (Amphibians)	Aves (Birds)
Order	Anura (Frogs & Toads)	Apodiformes (Apodiformes)
Family	Eleutherodactylidae	Trochilidae
Genus	Eleutherodactylus	Aglaiocercus
Species	Eleutherodactylus jugans	Aglaiocercus kingii

Evolutionary Relationship

La Selle Dusky Frog and Long-tailed Sylph share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

La Selle Dusky Frog

CR — Critically Endangered

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	La Selle Dusky Frog	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

La Selle Dusky Frog

Habitat

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

Long-tailed Sylph

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Long-tailed Sylph

One of the most strikingly ornamented hummingbirds, male long-tailed sylphs have iridescent green plumage and dramatically elongated, ribbon-like outer tail feathers reaching up to 22 cm — over three times the body length. Found in Andean cloud forests of Colombia and Venezuela, they inhabit humid montane forest between 1,400–2,800 meters elevation. Males perform elaborate display flights to attract females. Their extravagant tails are a classic example of sexual selection via female preference.