Coastal Silver-stiletto vs Northern Pika

Acrosathe annulata compared with Ochotona hyperborea

Taxonomic Classification

Rank	Coastal Silver-stiletto	Northern Pika
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum	Arthropoda (สัตว์ขาปล้อง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Insecta (แมลง)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Diptera (แมลงวัน)	Lagomorpha (อันดับกระต่าย)
Family	Therevidae	Ochotonidae
Genus	Acrosathe	Ochotona
Species	Acrosathe annulata	Ochotona hyperborea

Evolutionary Relationship

Coastal Silver-stiletto and Northern Pika share a common ancestor at the Kingdom level: Animalia. (สัตว์)

Conservation Status

Coastal Silver-stiletto

LC — Least Concern

Northern Pika

LC — Least Concern

Physical Characteristics

Attribute	Coastal Silver-stiletto	Northern Pika
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.

Northern Pika

Habitat

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.