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#3859 · 🪰 flies & mosquitoes

Fever Fly

🇳🇱 Koortsvlieg ·Dilophus febrilis

🪰 Flies & mosquitoes 📍 in the Netherlands
Fever Fly, photo 1 of 8
1/8 © James Senn · CC BY-NC 4.0

what is it?

Dilophus febrilis is a species of fly in the family Bibionidae. It is found in the Palearctic....

base stats

  • NL sightings 54iNaturalist, research grade
  • worldwide 4,141iNaturalist 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 54 times in the Netherlands on iNaturalist.
  • 4,141 observations worldwide on iNaturalist.
  • Scientifically named in 1758 (268 years ago).

fact sheet

English
Fever Fly
Nederlands
Koortsvlieg
scientific name
Dilophus febrilis
class
Insecta
order
Diptera
family
Bibionidae
sightings in NL
54
sightings in Europe
1,070
sightings worldwide
4,141
GBIF records in NL
3,937
weight
—
length
—
lifespan
—
named
1758

relatives· Bibionidae

Sources: iNaturalist taxon 326610, Wikidata Q14190458, GBIF 1590665, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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