#3891 · 🪰 flies & mosquitoes
Sieve-winged Snailkiller
🇳🇱 Rouwslakkendoder ·Coremacera marginata
🪰 Flies & mosquitoes 📍 in the Netherlands
📍 Voorschoten, Nederland
📍 Noordwijk aan Zee, Noordwijk, Nederland
📍 Eys, Nederland
📍 Graafland, Groot-Ammers, South Holland, NL
📍 5311 Gameren, Nederland
10 photos from iNaturalist (Creative Commons) · credits & licences
- 1. © Marie Lou Legrand · CC BY-NC 4.0
- 2. © Fritz Geller-Grimm · CC BY-SA 4.0
- 3. © Marcello Consolo · CC BY-NC-SA 4.0
- 4. © Francisco Welter-Schultes · CC BY-NC 4.0
- 5. © Fritz Geller-Grimm · CC BY-SA 4.0
- 6. Voorschoten, Nederland:© Rob Westerduijn · CC BY-NC 4.0
- 7. Noordwijk aan Zee, Noordwijk, Nederland:© Michel Langeveld · CC BY 4.0
- 8. Eys, Nederland:© Michel Langeveld · CC BY 4.0
- 9. Graafland, Groot-Ammers, South Holland, NL:© no rights reserved · CC0
- 10. 5311 Gameren, Nederland:© dgcurrywheel · CC BY-NC 4.0
what is it?
Coremacera marginata is a species of fly in the family Sciomyzidae, the marsh flies or snail-killing flies. It occurs in most of Europe and in the Near East.
base stats
Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).
fun facts
- Spotted 37 times in the Netherlands on iNaturalist.
- 2,116 observations worldwide on iNaturalist.
- Scientifically named by Johan Christian Fabricius in 1775 (251 years ago).
fact sheet
- English
- Sieve-winged Snailkiller
- Nederlands
- Rouwslakkendoder
- scientific name
- Coremacera marginata
- class
- Insecta
- order
- Diptera
- family
- Sciomyzidae
- sightings in NL
- 37
- sightings in Europe
- 1,634
- sightings worldwide
- 2,116
- GBIF records in NL
- 2,485
- weight
- —
- length
- —
- lifespan
- —
- named
- 1775 by Johan Christian Fabricius
Sources: iNaturalist taxon 338531, Wikidata Q5170260, GBIF 1444574, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.