Willow apple gall sawfly
The willow apple gall sawfly is a small insect and a cousin of wasps and bees. Even though it is called a fly, it is not a real fly. It spends its childhood hidden inside a willow leaf.
How fast is it?
Fun facts
The mother lays her eggs inside a willow leaf. The leaf then grows a round bump, called a gall, around them.
The gall works like a cosy nursery where the young can grow up safe and hidden.
When it is grown up, the sawfly makes a little exit hole in the gall and climbs out.
In some places it breeds all year round and can have up to six generations in one year.
Most asked questions about Willow apple gall sawfly
?What is a willow apple gall?
It is a round bump that grows on a willow leaf around the sawfly's eggs. The young grow up safely inside it.
For bug experts
- Scientific name
- Euura californica
- Group
- Wasps and hornets
- Family
- Tenthredinidae
- Classification
- Insecta > Hymenoptera > Tenthredinidae
- Lives on
- North America
Where the facts come from
- Euura californica (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.
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