Azores Juniper vs Coastal Silver-stiletto

Juniperus brevifolia compared with Acrosathe annulata

Key Differences

• Azores Juniper is Vulnerable while Coastal Silver-stiletto is Least Concern.

Taxonomic Classification

Rank	Azores Juniper	Coastal Silver-stiletto
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Coniferophyta (Conifers)	Arthropoda (Arthropods)
Class	Pinopsida (Conifers)	Insecta (Insects)
Order	Pinales (Pines & Allies)	Diptera (Diptera)
Family	Cupressaceae	Therevidae
Genus	Juniperus	Acrosathe
Species	Juniperus brevifolia	Acrosathe annulata

Conservation Status

Azores Juniper

VU — Vulnerable

Coastal Silver-stiletto

LC — Least Concern

Physical Characteristics

Attribute	Azores Juniper	Coastal Silver-stiletto
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Azores Juniper

Habitat

Typically found in temperate and boreal forests, often at higher elevations.

Range

Found in Portugal. 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.

Azores Juniper

The Azores Juniper (Juniperus brevifolia) is a species in the genus Juniperus. It is currently classified as Vulnerable on the IUCN Red List. Typically found in temperate and boreal forests, often at higher elevations.

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.