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Sticker of Boreal stone
Bug card No. 0589 of 4,939

Boreal stone

Acroneuria lycorias
Name means: “named after Lycorias, a sea nymph from Greek myths”

The boreal stone is a big stonefly from North America. Its young live underwater in large, cold streams and rivers for three whole years. They are fierce little hunters of other water creatures.

Lives in
North America, from northern Quebec down to Florida and west to Saskatchewan, in cold streams and rivers
Top speed
about 5 km/h (3.1 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It cannot sting, and it would rather fly away than bother you.
What does it eat?
Its young live underwater and hunt other small water animals.
For real!Photo of Boreal stone
Picture by StreamsProject. CC BY-SA 3.0, via Wikimedia Commons.

How fast is it?

cool stuff

Fun facts

1

It takes three years to grow from egg to grown-up.

2

It was first described by Edward Newman in 1839.

3

It is very sensitive to dirty water, so it only lives where streams are clean.

4

It likes big bodies of cold water, like the streams of the northern forests in Alberta.

you asked

Most asked questions about Boreal stone

?Is the boreal stone dangerous?

No. It is harmless to people.

?Where does the boreal stone live?

In cold, clean streams and rivers in eastern and central North America.

For bug experts

Scientific name
Acroneuria lycorias
Named by
Newman, 1839
Group
Other insects
Family
Perlidae
Classification
Insecta > Plecoptera > Perlidae
Lives on
North America
Also known as
Boreal stonefly

Where the facts come from

  1. Acroneuria lycorias (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 StreamsProject. CC BY-SA 3.0, 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: Other insects

Also at home here: Ponds, rivers and shores

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