Coastal Silver-stiletto vs Common catchfly

Acrosathe annulata compared with Silene gallica

Key Differences

Coastal Silver-stiletto is Least Concern while Common catchfly is Extinct.

Taxonomic Classification

Rank	Coastal Silver-stiletto	Common catchfly
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Magnoliophyta (Flowering Plants)
Class	Insecta (Insects)	Magnoliopsida (Dicots)
Order	Diptera (Diptera)	Caryophyllales (Caryophyllales)
Family	Therevidae	Caryophyllaceae
Genus	Acrosathe	Silene
Species	Acrosathe annulata	Silene gallica

Conservation Status

Coastal Silver-stiletto

LC — Least Concern

Common catchfly

EX — Extinct

Physical Characteristics

Attribute	Coastal Silver-stiletto	Common catchfly
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.

Common catchfly

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Widely distributed across Africa (South Africa, Zimbabwe), Asia (8 countries), Europe (18 countries), North America (5 countries), Oceania and the Pacific (Australia), and South America (7 countries).

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.

Common catchfly

<em>Silene gallica</em>, commonly known as the common catchfly, is a plant species that was historically distributed across Africa, Asia, Europe, the Americas, and Oceania. It typically occupied diverse terrestrial habitats, often found in disturbed ground, arable fields, roadsides, and sandy or rocky soils in temperate and Mediterranean regions. The species is classified as Extinct on the IUCN Red List, indicating that it is no longer known to exist in the wild. Common catchfly belongs to the genus <em>Silene</em> within the family Caryophyllaceae and was a slender annual herb notable for its small, often pink or white flowers and sticky stems. The loss of this species is attributed to habitat degradation, agricultural intensification, and the reduction of traditional farming practices that once maintained the open, disturbed habitats it depended upon. Biological traits such as average lifespan, plant height, and mass of this species remain poorly documented in the scientific literature. Its extinction represents a permanent loss of biodiversity across its formerly wide global range.