#3852 · 🪰 flies & mosquitoes

Thistle Stem Gall Fly

🇳🇱 Akkerdistelgalboorvlieg ·Urophora cardui

🪰 Flies & mosquitoes 📍 in the Netherlands

9 photos from iNaturalist (Creative Commons) · credits & licences

1. © Nikolai Vladimirov · CC BY-NC 4.0
2. © Petro Hryniuk · CC BY-NC 4.0
3. © Denis Makhnovsky · CC BY-NC 4.0
4. © Mick Talbot · CC BY-NC-SA 4.0
5. © Hans Henrik Bruun · CC BY-NC-SA 4.0
6. © wadesworld19 · CC BY-NC 4.0
7. © Mick Talbot · CC BY-NC-SA 4.0
8. © AnneTanne · CC BY-NC 4.0
9. © Mick Talbot · CC BY 4.0

what is it?

Urophora cardui or the Canada thistle gall fly is a fruit fly which, contrary to its common name, is indigenous to Central Europe from the United Kingdom east to near the Crimea, and from Sweden south to the Mediterranean.

base stats

NL sightings 62iNaturalist, research grade
worldwide 7,911iNaturalist 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).