Euthamia leaf gall midge

The Euthamia leaf gall midge is a tiny fly. You may never notice the fly itself, but you can spot the little black bumps it leaves on the leaves of Euthamia plants. These bumps are called galls, and its babies grow up safely inside them.

How fast is it?
Fun facts
Its galls are about 3 to 10 millimetres long, about as long as a grain of rice or a little longer.
The shape of a gall depends on how wide the leaf is. It can be round, oval or long and thin.
Most galls are black, but some have a thin edge of yellow, white or purple.
Most asked questions about Euthamia leaf gall midge
?What is a leaf gall?
A gall is a little bump that a plant grows around a baby insect. On Euthamia leaves these bumps are usually black.
?Is the Euthamia leaf gall midge dangerous?
No. It is a tiny fly that does not bite or sting.
For bug experts
- Scientific name
- Asteromyia euthamiae
- Named by
- Gagné, 1968
- Group
- Flies and mosquitoes
- Family
- Cecidomyiidae
- Classification
- Insecta > Diptera > Cecidomyiidae
- Lives on
- North America
Where the facts come from
- Asteromyia euthamiae (Wikipedia, CC BY-SA 4.0): what it looks like, where it lives, what it eats, sizes and fun facts, retold in simple words.
- Picture by This image is created by user B. Schoenmakers at Observation.org , a global biodiversity recording project.. CC BY 3.0, Wikimedia Commons. The sticker of this bug is drawn from this picture.
If we got something wrong, sorry, we are bug fans, not a science journal. Tell us at [email protected] and we will fix it.
Bug Wiki honey jar For grown-ups: Bug Wiki is free, with no ads and no tracking. A small tip helps keep it online.Leave a tip