Coastal Silver-stiletto vs Collared Inca

Acrosathe annulata compared with Coeligena torquata

Taxonomic Classification

Rank	Coastal Silver-stiletto	Collared Inca
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Aves (Birds)
Order	Diptera (Diptera)	Apodiformes (Apodiformes)
Family	Therevidae	Trochilidae
Genus	Acrosathe	Coeligena
Species	Acrosathe annulata	Coeligena torquata

Evolutionary Relationship

Coastal Silver-stiletto and Collared Inca share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Coastal Silver-stiletto

LC — Least Concern

Collared Inca

LC — Least Concern

Physical Characteristics

Attribute	Coastal Silver-stiletto	Collared Inca
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Coastal Silver-stiletto

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Collared Inca

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Coastal Silver-stiletto

Coastal silver stiletto (Acrosathe annulata) is a slender robber fly in the family Therevidae, native to northwestern Europe, including the United Kingdom, France, the Netherlands, Belgium, and Scandinavia. Adults are found on coastal sand dunes and sandy heathland, where they perch on bare sand to ambush small flying insects. Stiletto flies in the family Therevidae are characterised by a slender body, long pointed abdomen, and predatory habits; adults prey on a variety of small dipterans and other flying insects during warm, sunny periods. Larvae develop in sandy soil, where they are also predatory, feeding on other invertebrate larvae. Acrosathe annulata is a habitat specialist restricted to open, sandy coastal habitats with sparse vegetation—environments that have declined substantially across northwestern Europe due to dune stabilisation, recreational disturbance, and the cessation of traditional dune management. The IUCN lists it as Least Concern, though regional conservation bodies in the United Kingdom have flagged population declines. It is considered an indicator of high-quality coastal sand dune habitats and is monitored through national invertebrate surveys.

Collared Inca

A medium-large hummingbird of Andean montane forests from Colombia to Bolivia, collared incas have striking black and white plumage with a broad white chest band and distinctive white tail patches visible in flight. Inhabiting forest and forest edges at elevations of 1,700–3,200 meters, they feed at diverse flowering plants and are important pollinators of large-flowered Andean shrubs and trees. Their contrasting white tail patches flash prominently during hovering flight, aiding species recognition.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway