California Red Fir vs Coastal Silver-stiletto

Abies magnifica compared with Acrosathe annulata

Taxonomic Classification

Rank	California Red Fir	Coastal Silver-stiletto
Kingdom	Plantae (Pflanzen)	Animalia (Tier)
Phylum	Coniferophyta (Conifers)	Arthropoda (Gliederfüßer)
Class	Pinopsida (Conifers)	Insecta (Insekten)
Order	Pinales (Koniferen)	Diptera (Zweiflügler)
Family	Pinaceae (Pine Family)	Therevidae
Genus	Abies	Acrosathe
Species	Abies magnifica	Acrosathe annulata

Conservation Status

California Red Fir

LC — Least Concern

Coastal Silver-stiletto

LC — Least Concern

Physical Characteristics

Attribute	California Red Fir	Coastal Silver-stiletto
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

California Red Fir

Habitat

Typically found in temperate and boreal forests, often at higher elevations.

Range

Distributed across Norway and Sweden.

Coastal Silver-stiletto

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

California Red Fir

The California Red Fir (Abies magnifica) is a species in the genus Abies. It is currently classified as Least Concern on the IUCN Red List. Typically found in temperate and boreal forests, often at higher elevations.

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.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden