Abalone vs Coastal Silver-stiletto

Haliotis tuberculata compared with Acrosathe annulata

Key Differences

• Abalone is Vulnerable while Coastal Silver-stiletto is Least Concern.

Taxonomic Classification

Rank	Abalone	Coastal Silver-stiletto
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Gastropoda (Gastropoda)	Insecta (Insects)
Order	Lepetellida (Lepetellida)	Diptera (Diptera)
Family	Haliotidae	Therevidae
Genus	Haliotis	Acrosathe
Species	Haliotis tuberculata	Acrosathe annulata

Evolutionary Relationship

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

Conservation Status

Abalone

VU — Vulnerable

Coastal Silver-stiletto

LC — Least Concern

Physical Characteristics

Attribute	Abalone	Coastal Silver-stiletto
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Abalone

Habitat

Found across multiple habitat types including mangrove forests and coastal wetlands, temperate broadleaf and mixed forests, and Mediterranean forests and woodlands, among 4 distinct biome types spanning the Afrotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Gabon), Asia (Israel), and Europe (9 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Coastal Silver-stiletto

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Abalone

The Abalone (Haliotis tuberculata) is a species in the genus Haliotis. It is listed as Vulnerable on the IUCN Red List. It is found across Belgium, France, Gabon, and 2 other countries, inhabiting Found across multiple habitat types including mangrove forests and coastal wetlands, temperate broadleaf and mixed forests, and Mediterranean forests and woodlands, among 4 distinct biome types spanning the Afrotropic and Palearctic realms.

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