Dauphin A Bosse De L'Australie vs Coastal Silver-stiletto

Sousa sahulensis compared with Acrosathe annulata

Key Differences

• Dauphin A Bosse De L'Australie is Vulnerable while Coastal Silver-stiletto is Least Concern.

Taxonomic Classification

Rank	Dauphin A Bosse De L'Australie	Coastal Silver-stiletto
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum	Chordata (Chordates)	Arthropoda (arthropodes)
Class	Mammalia (mammifères)	Insecta (insecte)
Order	Cetacea (Whales & Dolphins)	Diptera (Diptera)
Family	Delphinidae (Oceanic Dolphins)	Therevidae
Genus	Sousa	Acrosathe
Species	Sousa sahulensis	Acrosathe annulata

Evolutionary Relationship

Dauphin A Bosse De L'Australie and Coastal Silver-stiletto share a common ancestor at the Kingdom level: Animalia. (animal)

Conservation Status

Dauphin A Bosse De L'Australie

VU — Vulnerable

Coastal Silver-stiletto

LC — Least Concern

Physical Characteristics

Attribute	Dauphin A Bosse De L'Australie	Coastal Silver-stiletto
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dauphin A Bosse De L'Australie

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Coastal Silver-stiletto

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Dauphin A Bosse De L'Australie

The Australian humpback dolphin (Sousa sahulensis) is a species in the genus Sousa. It is currently classified as Vulnerable on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

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.