Dark Pincertail vs Long-tailed Sylph

Onychogomphus assimilis compared with Aglaiocercus kingii

Key Differences

• Dark Pincertail is Vulnerable while Long-tailed Sylph is Least Concern.

Taxonomic Classification

Rank	Dark Pincertail	Long-tailed Sylph
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Aves (Birds)
Order	Odonata (Odonata)	Apodiformes (Apodiformes)
Family	Gomphidae	Trochilidae
Genus	Onychogomphus	Aglaiocercus
Species	Onychogomphus assimilis	Aglaiocercus kingii

Evolutionary Relationship

Dark Pincertail and Long-tailed Sylph share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Dark Pincertail

VU — Vulnerable

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	Dark Pincertail	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dark Pincertail

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

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.