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Sticker of Red flat bark beetle
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Red flat bark beetle

Cucujus clavipes
Eats: A bit of everythingBeetlesForests and woods6 legs

The red flat bark beetle is a bright red beetle that is as flat as a pancake. Being so flat lets it squeeze under the bark of dead trees. It is a true champion of the cold.

Lives in
North America, from North Carolina all the way up to Alaska and Canada
Length
1 to 1.4 cm (0.39 to 0.55 in)
Top speed
about 0.48 km/h (0.3 mph)
On foot, estimate
Can it hurt you?
Harmless
Harmless. It does not sting and is not dangerous to people.
What does it eat?
It feeds on the soft inner layer under the bark, and it also hunts small animals there, like wood-boring beetles and mites.
For real!Photo of Red flat bark beetle
Picture by Judy Gallagher. CC BY 2.0, via Wikimedia Commons.

How big is it?

How long is it?

Red flat bark beetle about 1.4 cm long (0.55 in)A grain of rice about 6 mm (0.24 in)A toy building brick about 3.2 cm (1.3 in)
as long as 2.5 grains of rice in a rowcould run across a dinner table in 7.5 seconds

How big is Red flat bark beetle compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

Its larvae can survive a freezing minus 58 degrees without any problem.

2

To stop ice forming inside its body, it makes its own antifreeze, a bit like the stuff people put in cars.

3

Before winter it dries itself out and empties its tummy, so there is less water that could freeze.

4

It lives under the bark of dead poplar and ash trees.

5

Its head is shaped like a triangle and its feelers are black.

you asked

Most asked questions about Red flat bark beetle

?How does the red flat bark beetle survive winter?

It makes its own antifreeze and dries out its body, so its larvae can survive minus 58 degrees.

?Where does the red flat bark beetle live?

Under the bark of dead poplar and ash trees in North America, as far north as Alaska.

?How big is the red flat bark beetle?

About 1 to 1.4 centimetres long, and very flat.

For bug experts

Scientific name
Cucujus clavipes
Group
Beetles
Family
Cucujidae
Classification
Insecta > Coleoptera > Cucujidae
Lives on
North America
Also known as
Flat bark beetle

Where the facts come from

  1. Cucujus clavipes (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 Judy Gallagher. CC BY 2.0, 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