brown point snail vs Coastal Silver-stiletto

Acicula fusca compared with Acrosathe annulata

Key Differences

• brown point snail is Extinct while Coastal Silver-stiletto is Least Concern.

Taxonomic Classification

Rank	brown point snail	Coastal Silver-stiletto
Kingdom same	Animalia (животные)	Animalia (животные)
Phylum	Mollusca (моллюски)	Arthropoda (членистоногие)
Class	Gastropoda (брюхоногие)	Insecta (насекомые)
Order	Architaenioglossa (Architaenioglossa)	Diptera (двукрылые)
Family	Aciculidae	Therevidae
Genus	Acicula	Acrosathe
Species	Acicula fusca	Acrosathe annulata

Evolutionary Relationship

brown point snail and Coastal Silver-stiletto share a common ancestor at the Kingdom level: Animalia. (животные)

Conservation Status

brown point snail

EX — Extinct

Coastal Silver-stiletto

LC — Least Concern

Physical Characteristics

Attribute	brown point snail	Coastal Silver-stiletto
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

brown point snail

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across Belgium and Norway.

Coastal Silver-stiletto

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

brown point snail

The Brown Point Snail (Acicula fusca) is a species in the genus Acicula. It is currently classified as Extinct on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

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:

🇧🇪 Belgium 🇳🇴 Norway