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#3833 · 🪰 flies & mosquitoes

Woolly-tailed Marsh Fly

🇳🇱 Moeraspendelvlieg ·Helophilus hybridus

🪰 Flies & mosquitoes 📍 in the Netherlands
Woolly-tailed Marsh Fly, photo 1 of 10
1/10 © André Nagelhout · CC BY-NC 4.0

what is it?

Helophilus hybridus is a hoverfly. It is a Palearctic species.

base stats

  • NL sightings 85iNaturalist, research grade
  • worldwide 2,818iNaturalist observations

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 85 times in the Netherlands on iNaturalist.
  • 2,818 observations worldwide on iNaturalist.
  • Scientifically named by Hermann Loew in 1846 (180 years ago).

fact sheet

English
Woolly-tailed Marsh Fly
Nederlands
Moeraspendelvlieg
scientific name
Helophilus hybridus
class
Insecta
order
Diptera
family
Syrphidae
sightings in NL
85
sightings in Europe
1,631
sightings worldwide
2,818
GBIF records in NL
4,200
weight
—
length
—
lifespan
—
named
1846 by Hermann Loew

relatives· Syrphidae

Sources: iNaturalist taxon 447126, Wikidata Q2745903, GBIF 5071368, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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