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Sticker of Horned dor beetle
Bug card No. 2268 of 4,939

Horned dor beetle

Odonteus armiger
Eats: Fungus and mouldBeetlesGardens and meadows6 legs

The horned dor beetle is a small, round, shiny black beetle. The male has a thin horn on his head that he can move. It lives such a hidden life that scientists still know very little about it.

Lives in
Much of Europe, east to the Ural Mountains and the Caucasus
Length
0.7 to 1 cm (0.28 to 0.39 in)
Top speed
about 0.41 km/h (0.25 mph)
On foot, estimate
Can it hurt you?
Harmless
Harmless. It does not bite or sting people.
What does it eat?
Not much is known, because it lives so hidden. Scientists think it feeds on fungi that grow under the ground.
For real!Photo of Horned dor beetle
Picture by Udo Schmidt from Deutschland. CC BY-SA 2.0, via Wikimedia Commons.

How big is it?

How long is it?

Horned dor beetle about 1 cm long (0.39 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 fingernailas long as 1.5 grains of rice in a rowcould run across a dinner table in 8.8 seconds

How big is Horned dor beetle compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

It is the only one of its group of beetles that lives in Europe.

2

Besides the big horn on his head, the male has two smaller horns on the sides of his neck shield.

3

The female has no horn. She has a small ridge with two little bumps instead.

4

The ends of its feelers are made of small leaves that it can open and close.

5

It was first described in 1772, and since then it has had many different scientific names.

you asked

Most asked questions about Horned dor beetle

?How big is the horned dor beetle?

About 7 to 10 millimetres long.

?Do female horned dor beetles have horns?

No. Only males have the movable head horn. Females have a small ridge with two bumps.

For bug experts

Scientific name
Odonteus armiger
Named by
Scopoli, 1772
Group
Beetles
Family
Bolboceratidae
Classification
Insecta > Coleoptera > Bolboceratidae
Lives on
Europe

Where the facts come from

  1. Odonteus armiger (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 Udo Schmidt from Deutschland. CC BY-SA 2.0, Wikimedia Commons. The sticker of this bug is drawn from this 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.

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