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Sticker of Small eggar
Bug card No. 3916 of 4,939

Small eggar

Eriogaster lanestris
Eats: Nothing as a grown-upMothsGardens and meadows6 legs

The small eggar is a furry grey-brown moth with white spots on its wings. Its caterpillars are black and hairy, and they live together in big families of about 200 in a silk tent. They go out to eat together and come home together.

Lives in
Scattered across Europe and Asia, in hedges, bushes and small trees
Wingspan
3 to 4 cm (1.2 to 1.6 in)
Top speed
about 14 km/h (8.7 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It does not bite or sting.
What does it eat?
The moths do not eat at all. The caterpillars eat young leaves of blackthorn, hawthorn and birch.
For real!Photo of Small eggar
Picture by User:MarkusHagenlocher. CC BY-SA 3.0, via Wikimedia Commons.

How big is it?

How wide are its wings?

Small eggar wings about 4 cm tip to tip (1.6 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)
wings as wide as 7 grains of rice in a rowcould fly across a whole football pitch in 27 seconds

How big is Small eggar compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

The caterpillars build a silk tent on a bush and live in it together.

2

When some caterpillars start to leave the tent, the others feel the shaking of the silk and know it is time to eat.

3

They leave silk trails as they walk, so the others can follow the way to the best leaves.

4

Its caterpillars can grow to about 5 centimetres long.

5

It has become rarer since the 1970s, because people cut and mow the hedges where it lives.

you asked

Most asked questions about Small eggar

?Do small eggar caterpillars live together?

Yes. About 200 caterpillars live together in one silk tent and go out to eat as a group.

?What does the small eggar eat?

Only the caterpillars eat. They eat young leaves of blackthorn, hawthorn and birch.

?Is the small eggar dangerous?

No. It is a harmless moth.

For bug experts

Scientific name
Eriogaster lanestris
Group
Moths
Family
Lasiocampidae
Classification
Insecta > Lepidoptera > Lasiocampidae
Lives on
Europe, Asia

Where the facts come from

  1. Eriogaster lanestris (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 User:MarkusHagenlocher. 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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