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Sticker of False underwing
Bug card No. 1634 of 4,939

False underwing

Allotria elonympha
Eats: PlantsMothsForests and woods6 legs

The false underwing is a moth from the woods of eastern North America. It is the only kind in its whole group, so it has no close cousins at all. You can spot it flying on many months of the year, from early spring until autumn.

Lives in
Eastern North America, in woods with leafy trees
Wingspan
3.3 to 4.4 cm (1.3 to 1.7 in)
Top speed
about 15 km/h (9.3 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It is a gentle moth that cannot bite or sting.
What does it eat?
Its caterpillars munch the leaves of trees such as black gum, hickory and walnut.
For real!Photo of False underwing
Picture by NCBioTeacher. CC0, via Wikimedia Commons.

How big is it?

How wide are its wings?

False underwing wings about 4.4 cm tip to tip (1.7 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 25 seconds

How big is False underwing compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

It is the only species in its genus, so scientists call it monotypic, which means one of a kind.

2

Grown-up moths can be seen flying from March all the way to September.

3

Its open wings measure about 3 to 4 and a half centimetres from tip to tip.

4

Both the moth and its group were first described by the same scientist, Jacob Hübner, about 200 years ago.

you asked

Most asked questions about False underwing

?Where does the false underwing live?

In eastern North America, where its caterpillars can find leafy trees to eat.

?What does the false underwing caterpillar eat?

Leaves of trees like black gum, hickory and walnut.

For bug experts

Scientific name
Allotria elonympha
Named by
Hübner, 1818
Group
Moths
Family
Erebidae
Classification
Insecta > Lepidoptera > Erebidae
Lives on
North America
Also known as
False underwing moth

Where the facts come from

  1. Allotria (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 NCBioTeacher. CC0, 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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