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Sticker of Western tussock moth
Bug card No. 4703 of 4,939

Western tussock moth

Orgyia vetusta
Eats: PlantsMothsForests and woods6 legs

The western tussock moth is a moth where the boy and the girl look very different. The male has wings and flies, but the female has no working wings and cannot fly at all. Its hairy caterpillars live on oak trees.

Lives in
Western North America, from California to British Columbia, on oaks and in orchards
Top speed
about 14 km/h (8.7 mph)
Flying, estimate
Can it hurt you?
Has stinging hairs
What does it eat?
Its caterpillars eat the leaves of oaks, fruit and nut trees, willows and many garden bushes.
For real!Photo of Western tussock moth
Picture by (c) Cricket Raspet, some rights reserved (CC BY). CC BY 4.0, via Wikimedia Commons.

How fast is it?

cool stuff

Fun facts

1

The mother covers her white eggs with her own hairs to keep them safe through the winter.

2

Tiny caterpillars hang on silk threads and let the wind carry them to new places.

3

The caterpillars hatch in spring, and the moths come out of their cocoons in summer.

4

In southern California the caterpillars can harm orange and lemon orchards.

you asked

Most asked questions about Western tussock moth

?Can you touch a tussock moth caterpillar?

Better not. Its hairs can make the skin itchy or cause a rash.

?Why can't the female western tussock moth fly?

The females do not have working wings. They stay near their cocoon and lay eggs there.

For bug experts

Scientific name
Orgyia vetusta
Group
Moths
Family
Erebidae
Classification
Insecta > Lepidoptera > Erebidae
Lives on
North America

Where the facts come from

  1. Western tussock moth (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 (c) Cricket Raspet, some rights reserved (CC BY). CC BY 4.0, 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: Moths

Also at home here: Forests and woods

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