#3914 · 🪰 flies & mosquitoes
Grote wilgwratgalmug
Iteomyia major
9 photos from iNaturalist (Creative Commons) · credits & licences
what is it?
Iteomyia major is a gall midge which forms galls on willows ( Salix species). It was first described by Jean-Jacques Kieffer in 1889.
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 32 times in the Netherlands on iNaturalist.
- 901 observations worldwide on iNaturalist.
- Scientifically named by Jean-Jacques Kieffer in 1889 (137 years ago).
fact sheet
- Nederlands
- Grote wilgwratgalmug
- scientific name
- Iteomyia major
- class
- Insecta
- order
- Diptera
- family
- Cecidomyiidae
- sightings in NL
- 32
- sightings in Europe
- 599
- sightings worldwide
- 901
- GBIF records in NL
- 1,422
- weight
- —
- length
- —
- lifespan
- —
- named
- 1889 by Jean-Jacques Kieffer
relatives· Cecidomyiidae
#3791 📷 10Beech Gall Midge
🇳🇱 Beukengalmug
Mikiola fagi
👀 199 in NL
#3823 📷 10Nettle Pouch Gall Midge
🇳🇱 Brandnetelbladgalmug
Dasineura urticae
👀 94 in NL
#3837 📷 10Hairy Beech Gall
🇳🇱 Beukenhaargalmug
Hartigiola annulipes
👀 78 in NL
#3867 📷 9locust gall midge
🇳🇱 Robiniagalmug
Obolodiplosis robiniae
👀 49 in NL
#3872 📷 10Willow Rose Gall Midge
🇳🇱 Gewone wilgenroosjesgalmug
Rabdophaga rosaria
👀 46 in NL
#3920 📷 10Lighthouse Gall
🇳🇱 Hondsdrafbeursjesgalmug
Rondaniola bursaria
👀 31 in NL
#3923 📷 10Tansy Flask Gall
🇳🇱 Gewone Boerenwormkruidgalmug
Rhopalomyia tanaceticola
👀 30 in NL
Sources: iNaturalist taxon 716989, Wikidata Q13625645, GBIF 1592477, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.