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Sticker of Disc gall wasp
Bug card No. 1370 of 4,939

Disc gall wasp

Feron parmula
Eats: PlantsWasps and hornetsForests and woods6 legs

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
Top speed
about 22 km/h (14 mph)
Flying, estimate
What does it eat?
Its larva lives inside the gall on an oak leaf and feeds on the plant from the inside.
For real!Photo of Disc gall wasp
Picture by Franco Folini from San Francisco, USA. CC BY-SA 2.0, via Wikimedia Commons.

How fast is it?

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

  1. 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.
  2. 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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More from the same group: Wasps and hornets

Also at home here: Forests and woods

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