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Sticker of Fiery searcher
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Fiery searcher

Calosoma scrutator

The fiery searcher is a big ground beetle that shines like a jewel. Its back is bright metallic green with a reddish gold edge. It is a hungry hunter that gobbles up caterpillars.

Lives in
North America, and also Mexico, Guatemala and Venezuela, in fields, gardens and woods
Length
3.5 cm (1.4 in)
Top speed
about 1.7 km/h (1.1 mph)
On foot, estimate
Can it hurt you?
Harmless
It does not sting, but if you pick it up it lets out a stinky oil that smells like rotten milk. Better to just watch it.
What does it eat?
It eats caterpillars, especially tent caterpillars and cankerworms. Its larvae hunt soft caterpillars too.
For real!Photo of Fiery searcher
Picture by David R. Maddison. CC BY 3.0, via Wikimedia Commons.

How big is it?

How long is it?

Fiery searcher about 3.5 cm long (1.4 in)A toy building brick about 3.2 cm (1.3 in)A crayon about 9 cm (3.5 in)A banana about 18 cm (7.1 in)
as long as 6 grains of rice in a rowcould run across a dinner table in 2.1 seconds

How big is Fiery searcher compared to YOU?

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

How fast is it?

cool stuff

Fun facts

1

It is one of the biggest ground beetles in North America, up to 3,5 centimetres long.

2

It can climb trees to hunt caterpillars, but it spends most of its time on the ground.

3

It hunts mainly at night.

4

A grown-up fiery searcher can live up to 4 years.

5

Gardeners and farmers like it because it eats caterpillars that strip leaves off trees and crops.

you asked

Most asked questions about Fiery searcher

?Is the fiery searcher dangerous?

No, but it makes a very stinky oil if you handle it, so leave it be.

?What does the fiery searcher eat?

Caterpillars, especially ones that eat tree leaves and crops.

?How big is a fiery searcher?

It can grow up to 3,5 centimetres long.

For bug experts

Scientific name
Calosoma scrutator
Named by
Fabricius, 1775
Group
Beetles
Family
Carabidae
Classification
Insecta > Coleoptera > Carabidae
Lives on
North America, South America
Also known as
Caterpillar hunter

Where the facts come from

  1. Calosoma scrutator (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 David R. Maddison. CC BY 3.0, 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: Gardens and meadows