Large-grooved diving beetle
Colymbetes fuscus

The large-grooved diving beetle is a water beetle that swims in ponds and pools. It paddles with its flat back legs like oars. It lives in almost every country in Europe, Estonia too.
Lives in
Europe, the Near East and North Africa, in ponds and pools
Can it hurt you?
Harmless
Harmless to people, but it may nip a finger if you hold it. Just watch it swim.
What does it eat?
Like other diving beetles, it hunts small water animals.

How fast is it?
A tortoise about 0.3 km/h (0.19 mph)
Large-grooved diving beetle about 1.8 km/h (1.1 mph)
A person walking about 5 km/h (3.1 mph)
A kid running fast about 13 km/h (8.1 mph)
cool stuff
Fun facts
1
It lives in a long list of European countries, all the way north to the Shetland and Orkney islands.
2
Outside Europe it lives in the Near East and North Africa too.
3
Diving beetles take a bubble of air under their wing cases, like a little scuba tank, when they dive.
you asked
Most asked questions about Large-grooved diving beetle
?Does the large-grooved diving beetle live in Estonia?
Yes. It lives in Estonia and in most other European countries.
?How does a diving beetle breathe under water?
It carries a bubble of air under its wing cases and comes up to the surface to fill it again.
For bug experts
- Scientific name
- Colymbetes fuscus
- Named by
- Linnaeus, 1758
- Group
- Beetles
- Family
- Dytiscidae
- Classification
- Insecta > Coleoptera > Dytiscidae
- Lives on
- Europe, Asia, Africa
Where the facts come from
- Colymbetes fuscus (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 Itu. 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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