Balkan Fritillary vs Long-tailed Sylph

Boloria graeca compared with Aglaiocercus kingii

Key Differences

• Balkan Fritillary is Near Threatened while Long-tailed Sylph is Least Concern.

Taxonomic Classification

Rank	Balkan Fritillary	Long-tailed Sylph
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Aves (Birds)
Order	Lepidoptera (Butterflies & Moths)	Apodiformes (Apodiformes)
Family	Nymphalidae (Brush-footed Butterflies)	Trochilidae
Genus	Boloria	Aglaiocercus
Species	Boloria graeca	Aglaiocercus kingii

Evolutionary Relationship

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

Conservation Status

Balkan Fritillary

NT — Near Threatened

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	Balkan Fritillary	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Balkan Fritillary

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (9 countries). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Long-tailed Sylph

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Balkan Fritillary

The Balkan Fritillary (Boloria graeca) is a species in the genus Boloria. It is currently classified as Near Threatened on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

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.