Coastal Silver-stiletto vs Ruby Dapperling

Acrosathe annulata compared with Leucoagaricus rubrotinctus

Key Differences

Coastal Silver-stiletto is Least Concern while Ruby Dapperling is Not Evaluated.

Taxonomic Classification

Rank	Coastal Silver-stiletto	Ruby Dapperling
Kingdom	Animalia (สัตว์)	Fungi (เห็ดรา)
Phylum	Arthropoda (สัตว์ขาปล้อง)	Basidiomycota (Club Fungi)
Class	Insecta (แมลง)	Agaricomycetes (Mushrooms)
Order	Diptera (แมลงวัน)	Agaricales (Gilled Mushrooms)
Family	Therevidae	Agaricaceae (Agarics)
Genus	Acrosathe	Leucoagaricus
Species	Acrosathe annulata	Leucoagaricus rubrotinctus

Conservation Status

Coastal Silver-stiletto

LC — Least Concern

Ruby Dapperling

NE — Not Evaluated

Physical Characteristics

Attribute	Coastal Silver-stiletto	Ruby Dapperling
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.

Ruby Dapperling

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Brazil, France, Taiwan, and United States.

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.