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Sticker of Once-married underwing
Bug card No. 3111 of 4,939

Once-married underwing

Catocala unijuga
Eats: PlantsMothsForests and woods6 legs

The once-married underwing is a big moth from North America. Its wings measure about 7 to 8 centimetres from tip to tip. Like other underwing moths, it hides its back wings under its front wings when it rests.

Lives in
North America, from Newfoundland to British Columbia and south to Kentucky and Utah
Wingspan
6.8 to 8.2 cm (2.7 to 3.2 in)
Top speed
about 20 km/h (12 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It is a moth that cannot bite or sting.
What does it eat?
Its caterpillars eat the leaves of aspen, poplar and willow trees.
For real!Photo of Once-married underwing
Picture by Nancy. CC0, via Wikimedia Commons.

How big is it?

How wide are its wings?

Once-married underwing wings about 8.2 cm tip to tip (3.2 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 2.5 toy building brickscould fly across a whole football pitch in 19 seconds

How big is Once-married underwing compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

It has only one generation a year.

2

The grown-ups fly from July to September.

3

It lives across a huge area, from Newfoundland in the east to British Columbia in the west.

4

One kind of it lives only in Utah.

you asked

Most asked questions about Once-married underwing

?How big is the once-married underwing?

Its wings are about 7 to 8 centimetres from tip to tip.

?What does the once-married underwing eat?

Its caterpillars eat the leaves of aspen, poplar and willow trees.

For bug experts

Scientific name
Catocala unijuga
Named by
Walker, 1858
Group
Moths
Family
Erebidae
Classification
Insecta > Lepidoptera > Erebidae
Lives on
North America

Where the facts come from

  1. Catocala unijuga (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 Nancy. 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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