bulb nematode vs Coastal Silver-stiletto

Ditylenchus dipsaci compared with Acrosathe annulata

Key Differences

• bulb nematode is Not Evaluated while Coastal Silver-stiletto is Least Concern.

Taxonomic Classification

Rank	bulb nematode	Coastal Silver-stiletto
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Nematoda (Roundworms)	Arthropoda (Arthropods)
Class	Chromadorea (Chromadorea)	Insecta (Insects)
Order	Rhabditida (Rhabditida)	Diptera (Diptera)
Family	Anguinidae	Therevidae
Genus	Ditylenchus	Acrosathe
Species	Ditylenchus dipsaci	Acrosathe annulata

Evolutionary Relationship

bulb nematode and Coastal Silver-stiletto share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

bulb nematode

NE — Not Evaluated

Coastal Silver-stiletto

LC — Least Concern

Physical Characteristics

Attribute	bulb nematode	Coastal Silver-stiletto
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

bulb nematode

Habitat

Native to Africa and Asia and Europe, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Africa (South Africa), Asia (China), Europe (8 countries), and North America (United States).

Coastal Silver-stiletto

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

bulb nematode

The Bulb Nematode (Ditylenchus dipsaci) is a species in the genus Ditylenchus. Native to Africa and Asia and Europe, inhabiting ecosystems characteristic of the region.

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.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden