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Sticker of Acorn weevil
Bug card No. 0002 of 1,500

Acorn weevil

Curculio glandium
Eats: PlantsBeetlesForests and woods6 legs

The acorn weevil is a small beetle with a super long, thin snout. The female's snout is as long as her whole body or even longer. She uses it like a drill to make holes in acorns, and her babies grow up inside them.

Lives in
Europe, in oak woods
Length
4 to 8 mm (0.16 to 0.31 in)
Top speed
about 0.12 km/h (0.07 mph)
On foot, estimate
Can it hurt you?
Harmless
Harmless to people. Only acorns need to watch out.
What does it eat?
It eats with the tip of its long snout. Its larvae live inside acorns and eat them from the inside.
For real!Photo of Acorn weevil
Picture by Elke Freese. CC BY-SA 3.0, via Wikimedia Commons.

How big is it?

How long is it?

Acorn weevil about 8 mm long (0.31 in)A grain of rice about 6 mm (0.24 in)A toy building brick about 3.2 cm (1.3 in)
small enough to sit on your fingernailcould run across a dinner table in 30 seconds

How big is Acorn weevil compared to YOU?

Just maths in your browser. Nothing is saved or sent anywhere.

How fast is it?

cool stuff

Fun facts

1

The male's snout is shorter, only about two thirds as long as the female's.

2

After the female lays her eggs, the acorn heals the little hole and keeps the eggs safe inside.

3

When the acorn falls to the ground, the larva crawls out and digs into the soil.

4

The larva can stay in the soil for one to two years and does not freeze in winter.

5

In some years it ruins most of the acorns, so they cannot grow into new oak trees.

you asked

Most asked questions about Acorn weevil

?Is the acorn weevil harmful?

Not to people. It only damages acorns, because its larvae eat them.

?Why does the acorn weevil have such a long snout?

It uses the snout to drill holes into acorns, where it lays its eggs.

?How big is an acorn weevil?

It is only about 4 to 8 millimetres long, not counting the snout.

For bug experts

Scientific name
Curculio glandium
Group
Beetles
Family
Curculionidae
Classification
Insecta > Coleoptera > Curculionidae
Lives on
Europe

Where the facts come from

  1. Curculio glandium (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 Elke Freese. CC BY-SA 3.0, 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 hello@bugwiki.app and we will fix it.

More from the same group: Beetles

Also at home here: Forests and woods