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Sticker of Harlequin bug
Bug card No. 0712 of 1,500

Harlequin bug

Murgantia histrionica
Eats: PlantsTrue bugs and cicadasGardens and meadows6 legs

The harlequin bug is a black shield bug painted with bright red, orange, yellow and white patterns, like a clown's costume. It is a stink bug that lives on cabbage and its relatives. Its bright colours warn birds that it tastes bad.

Lives in
North America, especially the warmer parts of the United States, and the tropics, in gardens and fields
Top speed
about 0.2 km/h (0.12 mph)
On foot, estimate
Can it hurt you?
Harmless
Harmless to people. Gardeners do not like it, because it damages cabbage plants.
What does it eat?
It pokes its beak into cabbage, broccoli, kale, radish and mustard plants and sucks out the juice. When there are no crops, it feeds on wild plants.
For real!Photo of Harlequin bug
Picture by Linda Tanner. CC BY 2.0, via Wikimedia Commons.

How fast is it?

cool stuff

Fun facts

1

Cabbage plants have a sharp mustard taste. The bug stores that taste in its body, so birds find it yucky.

2

Its eggs look like tiny black-and-white striped barrels, laid in neat groups of twelve.

3

In warm places there can be up to six families of bugs in one year.

4

In colder places the grown-ups spend the winter hiding in old plants at the edge of fields.

you asked

Most asked questions about Harlequin bug

?Is the harlequin bug harmful?

Not to people. It is a pest for gardeners because it sucks the juice out of cabbage plants.

?What does the harlequin bug eat?

It sucks juice from cabbage, broccoli, kale, radish, mustard and similar plants.

?Why is it so colourful?

Its bright colours warn birds that it tastes bad.

For bug experts

Scientific name
Murgantia histrionica
Group
True bugs and cicadas
Family
Pentatomidae
Classification
Insecta > Hemiptera > Pentatomidae
Lives on
North America
Also known as
Harlequin cabbage bug, Calico bug, Fire bug

Where the facts come from

  1. Harlequin cabbage bug (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 Linda Tanner. 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: True bugs and cicadas

Also at home here: Gardens and meadows