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Sticker of Common idia moth
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Common idia moth

Idia aemula

The common idia is a small grey moth with thin wavy lines on its wings. It is a litter moth, which means its caterpillars live among fallen leaves. They help to tidy up the forest floor.

Lives in
North America, from Canada to Florida and Texas
Wingspan
2 to 3 cm (0.79 to 1.2 in)
Top speed
about 12 km/h (7.5 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It cannot bite or sting.
What does it eat?
Its caterpillars eat dead, fallen leaves. That helps turn old leaves back into soil.
For real!Photo of Common idia moth
Picture by Mike Boone. CC BY-SA 2.5, via Wikimedia Commons.

How big is it?

How wide are its wings?

Common idia moth wings about 3 cm tip to tip (1.2 in)A grain of rice about 6 mm (0.24 in)A toy building brick about 3.2 cm (1.3 in)A crayon about 9 cm (3.5 in)
wings as wide as 5 grains of rice in a rowcould fly across a whole football pitch in 32 seconds

How big is Common idia moth compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

It has some funny other names, like powdered snout and waved tabby.

2

Each wing has a big pale or orange-brown spot shaped a bit like a kidney.

3

In the north it flies from May to October, in the south from April to November.

4

There are two or three families of these moths every year.

you asked

Most asked questions about Common idia moth

?What does the common idia caterpillar eat?

Dead leaves. It is a little recycler of the forest floor.

?How big is the common idia moth?

With its wings spread it is about 2 to 3 centimetres wide.

For bug experts

Scientific name
Idia aemula
Named by
HΓΌbner, 1813
Group
Moths
Family
Erebidae
Classification
Insecta > Lepidoptera > Erebidae
Lives on
North America
Also known as
Common idia, Powdered snout, Waved tabby

Where the facts come from

  1. Idia aemula (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 Mike Boone. CC BY-SA 2.5, 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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