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Sticker of Woolly beech aphid
Bug card No. 1480 of 1,500

Woolly beech aphid

Phyllaphis fagi
Eats: PlantsTrue bugs and cicadasForests and woods6 legs

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.

Lives in
Central and southern Europe, and now also the Middle East, Australia, New Zealand and North America
Length
1 to 3 mm (0.04 to 0.12 in)
Top speed
about 0.01 km/h (0.01 mph)
On foot, estimate
Can it hurt you?
Harmless
Harmless to people. It is only a problem for beech trees.
What does it eat?
It sucks sap from beech leaves.
For real!Photo of Woolly beech aphid
Picture by Hectonichus. CC BY-SA 4.0, via Wikimedia Commons.

How big is it?

How long is it?

Woolly beech aphid about 3 mm long (0.12 in)A grain of rice about 6 mm (0.24 in)
small enough to sit on your fingernailneeds 6 minutes to cross a dinner table

How big is Woolly beech aphid compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

One mother can give birth to up to 80 babies without needing a dad.

2

There are about four generations in one summer.

3

It makes lots of sweet, sticky honeydew that drips from the leaves.

4

Hoverflies, ladybirds and lacewings love to eat it.

5

In autumn the mums lay 10 to 16 eggs on the tree, and the eggs wait there until spring.

you asked

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

  1. 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.
  2. 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.

More from the same group: True bugs and cicadas

Also at home here: Forests and woods