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Sticker of Blue-tailed damselfly
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Blue-tailed damselfly

Ischnura elegans

The blue-tailed damselfly is a thin, dark little damselfly with a bright blue spot near the end of its tail, like a tiny light. It flutters around ponds and slow rivers. When it rests, it folds its wings together over its back.

Lives in
Most of Europe and the Middle East, near ponds, lakes and slow rivers
Length
2.7 to 3.5 cm (1.1 to 1.4 in)
Wingspan
3.5 cm (1.4 in)
Top speed
about 10 km/h (6.2 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It cannot sting and does not bite people.
What does it eat?
It catches small flying insects, scooping them up with its legs like a basket. Its babies live in the water and hunt tiny water animals.
For real!Photo of Blue-tailed damselfly
Picture by Charles J. Sharp. CC BY-SA 3.0, via Wikimedia Commons.

How big is it?

How long is it?

Blue-tailed damselfly 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)

How wide are its wings?

Blue-tailed damselfly wings about 3.5 cm tip to tip (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 rowwings as wide as 6 grains of rice in a rowcould fly across a whole football pitch in 38 secondsmoves 79 times its own body length every second

How big is Blue-tailed damselfly compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

The females come in many colours: pink, violet, green, blue or brown. Their colour changes as they grow older.

2

Some females are coloured just like the males, so the males leave them in peace.

3

It is a super flier that can steer each of its four wings on its own.

4

Scientists found it can still fly and catch food even after losing a whole wing.

5

The female lays her eggs on floating bits of water plants.

you asked

Most asked questions about Blue-tailed damselfly

?What is the difference between a damselfly and a dragonfly?

A damselfly is thinner and folds its wings together over its back when it rests. A dragonfly keeps its wings spread out flat.

?Is the blue-tailed damselfly dangerous?

No. It cannot sting and does not bite people.

?What does the blue-tailed damselfly eat?

Small flying insects, which it catches in the air or picks off leaves.

For bug experts

Scientific name
Ischnura elegans
Named by
Vander Linden, 1820
Group
Dragonflies and damselflies
Family
Coenagrionidae
Classification
Insecta > Odonata > Coenagrionidae
Lives on
Europe, Asia
Also known as
Common bluetail

Where the facts come from

  1. Blue-tailed damselfly (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 Charles J. Sharp. CC BY-SA 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: Dragonflies and damselflies

Also at home here: Ponds, rivers and shores