Woolly beech aphid
The woolly beech aphid is a tiny pale bluish-green bug that lives under beech leaves. It makes white threads of wax that cover its body, so it looks like a tiny ball of wool. Big groups of them sit together on the leaves.

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Fun facts
One mother can give birth to up to 80 babies without needing a dad.
There are about four generations in one summer.
It makes lots of sweet, sticky honeydew that drips from the leaves.
Hoverflies, ladybirds and lacewings love to eat it.
In autumn the mums lay 10 to 16 eggs on the tree, and the eggs wait there until spring.
Most asked questions about Woolly beech aphid
?Why does the woolly beech aphid look woolly?
It makes white wax threads that cover its body like fluffy wool.
?What does the woolly beech aphid eat?
It sucks the sap of beech leaves.
?Is the woolly beech aphid harmful?
Not to people. But lots of them can harm beech trees.
For bug experts
- Scientific name
- Phyllaphis fagi
- Named by
- Linnaeus, 1761
- Group
- True bugs and cicadas
- Family
- Aphididae
- Classification
- Insecta > Hemiptera > Aphididae
- Lives on
- Europe, Asia, Australia and Oceania, North America
Where the facts come from
- Phyllaphis fagi (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 Hectonichus. CC BY-SA 4.0, Wikimedia Commons. The round sticker of this bug is cut from the same 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.