Once-married underwing
Catocala unijuga

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)
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.

How big is it?
How wide are its wings?
๐งฑwings as wide as 2.5 toy building bricksโฝcould fly across a whole football pitch in 19 seconds
How big is Once-married underwing compared to YOU?
Just maths in your browser. Nothing is saved or sent anywhere.
How fast is it?
A kid running fast about 13 km/h (8.1 mph)
Once-married underwing about 20 km/h (12 mph)
A grown-up on a bike about 25 km/h (16 mph)
A car driving in town about 50 km/h (31 mph)
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
- 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.
- 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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