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Sticker of Clown isopod
Bug card No. 0940 of 4,939

Clown isopod

Armadillidium klugii
Name means: “named for its bright red, yellow or white spots, like a clown”
Eats: Leftovers and dead thingsWoodliceGardens and meadows14 legsNot an insect, but a bug cousin

The clown isopod is a woodlouse with a costume. Its greyish brown back has rows of bright spots that can be white, yellow or red. It lives on the sunny coast of the Adriatic Sea and hides under stones.

Fun fact: woodlice are not insects. They are crustaceans, cousins of crabs and shrimps, that live on land.
Lives in
The coast of the Adriatic Sea, from Croatia to Montenegro, under stones
Length
2.1 cm (0.83 in)
the biggest ones
Top speed
about 0.2 km/h (0.12 mph)
On foot, estimate
Can it hurt you?
Harmless
Harmless. It only looks a bit like a spider to fool birds. It cannot bite or sting.
What does it eat?
Like other woodlice, it nibbles on dead leaves and other old bits of plants on the ground.
For real!Photo of Clown isopod
Picture by Pasztilla aka Attila Terbócs. CC BY-SA 4.0, via Wikimedia Commons.

How big is it?

How long is it?

Clown isopod about 2.1 cm long (0.83 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 4 grains of rice in a rowit has about 14 legscould run across a dinner table in 18 seconds

How big is Clown isopod compared to YOU?

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

How fast is it?

cool stuff

Fun facts

1

Its spots copy the red marks of a venomous spider, so hungry animals think twice before eating it. This trick is called mimicry.

2

It grows up to about 2 centimetres long, a little bigger than the common pill woodlouse.

3

It has three rows of pale dots on its back, and as it gets older the middle row turns yellow.

4

It is quite rare in the wild, but bug fans keep it as a pet.

you asked

Most asked questions about Clown isopod

?Is the clown isopod dangerous?

No. It only looks like a dangerous spider. It is a harmless woodlouse.

?How big is a clown isopod?

Up to about 2 centimetres long, which is big for a woodlouse.

For bug experts

Scientific name
Armadillidium klugii
Group
Woodlice
Family
Armadillidiidae
Classification
Malacostraca > Isopoda > Armadillidiidae
Lives on
Europe

Where the facts come from

  1. Armadillidium klugii (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 Pasztilla aka Attila Terbócs. CC BY-SA 4.0, 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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More from the same group: Woodlice

Also at home here: Gardens and meadows

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