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
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.

How fast is it?
A person walking about 5 km/h (3.1 mph)
Boreal stone about 5 km/h (3.1 mph)
A kid running fast about 13 km/h (8.1 mph)
A grown-up on a bike about 25 km/h (16 mph)
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
- 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.
- 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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