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Sticker of Forest cockchafer
Bug card No. 0529 of 1,500

Forest cockchafer

Melolontha hippocastani
Eats: PlantsBeetlesForests and woods6 legs

The forest cockchafer is a big brown beetle that buzzes around trees on spring evenings. The boys have fancy feelers that open like little fans. With them they can smell the girls from far away.

Lives in
From Western Europe all the way to the Pacific coast of China, mostly in forests
Length
2 to 2.9 cm (0.79 to 1.1 in)
Top speed
about 0.7 km/h (0.43 mph)
On foot, estimate
Can it hurt you?
Harmless
Harmless to people. It may tickle with its spiky legs, but it cannot bite or sting.
What does it eat?
The grubs live in the soil and eat rotting bits and later small roots, even the roots of young pine and fir trees. The beetles can harm trees, especially oaks.
For real!Photo of Forest cockchafer
Picture by Syrio. CC BY-SA 4.0, via Wikimedia Commons.

How big is it?

How long is it?

Forest cockchafer about 2.9 cm long (1.1 in)A grain of rice about 6 mm (0.24 in)A toy building brick about 3.2 cm (1.3 in)A crayon about 9 cm (3.5 in)
as long as 5 grains of rice in a rowcould run across a dinner table in 5.1 seconds

How big is Forest cockchafer compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

The grubs live underground for 3 to 5 years before they turn into beetles.

2

The beetles come out between late April and the end of June.

3

The boys' feelers have seven big flaps, while the girls' have only six smaller ones.

4

It lives further north than its cousin, the common cockchafer, or high up in mountain woods.

5

Its tail tip is black. That is how you can tell it from the common cockchafer, whose tail tip is red.

you asked

Most asked questions about Forest cockchafer

?What does a forest cockchafer eat?

The grubs eat rotting bits and plant roots in the soil. Lots of them can harm trees.

?When can you see forest cockchafers?

In late spring, from the end of April to the end of June, flying in the evening.

?How big is a forest cockchafer?

It is about 2 to 3 centimetres long.

For bug experts

Scientific name
Melolontha hippocastani
Group
Beetles
Family
Scarabaeidae
Classification
Insecta > Coleoptera > Scarabaeidae
Lives on
Europe, Asia
Also known as
Northern cockchafer

Where the facts come from

  1. Melolontha hippocastani (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 Syrio. 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: Beetles

Also at home here: Forests and woods