Disc gall wasp
Feron parmula

The disc gall wasp is a tiny wasp that makes oak trees grow little round lumps on their leaves. These lumps are called galls, and they are flat like tiny plates. Its babies grow up safely hidden inside them.
Lives in
The Pacific coast of North America, in Oregon and California, on oak trees
What does it eat?
Its larva lives inside the gall on an oak leaf and feeds on the plant from the inside.

How fast is it?
A kid running fast about 13 km/h (8.1 mph)
Disc gall wasp about 22 km/h (14 mph)
A grown-up on a bike about 25 km/h (16 mph)
A car driving in town about 50 km/h (31 mph)
cool stuff
Fun facts
1
Its galls are shaped like little discs, no bigger than 3 millimetres across. They are pale with red stripes.
2
It can make galls on many kinds of oak trees, and it likes white oaks the most.
3
The grown-up females come out of their galls in April.
you asked
Most asked questions about Disc gall wasp
?What is a gall?
A gall is a lump that a plant grows when a tiny insect lays its egg in it. The baby insect lives and eats inside the lump.
For bug experts
- Scientific name
- Feron parmula
- Group
- Wasps and hornets
- Family
- Cynipidae
- Classification
- Insecta > Hymenoptera > Cynipidae
- Lives on
- North America
Where the facts come from
- Feron parmula (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 Franco Folini from San Francisco, USA. CC BY-SA 2.0, 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.
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