Bootlace worm vs Long-tailed Sylph

Lineus longissimus compared with Aglaiocercus kingii

Key Differences

• Bootlace worm is Not Evaluated while Long-tailed Sylph is Least Concern.

Taxonomic Classification

Rank	Bootlace worm	Long-tailed Sylph
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Nemertea (Nemertea)	Chordata (Chordates)
Class	Pilidiophora (Pilidiophora)	Aves (Birds)
Order	Heteronemertea (Heteronemertea)	Apodiformes (Apodiformes)
Family	Lineidae	Trochilidae
Genus	Lineus	Aglaiocercus
Species	Lineus longissimus	Aglaiocercus kingii

Evolutionary Relationship

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

Conservation Status

Bootlace worm

NE — Not Evaluated

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	Bootlace worm	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bootlace worm

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

Long-tailed Sylph

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Bootlace worm

The Bootlace worm (Lineus longissimus) is a species in the genus Lineus. Native to Europe, inhabiting ecosystems characteristic of the region.

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.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway