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Sticker of Sweetfern geometer moth
Bug card No. 4256 of 4,939

Sweetfern geometer moth

Cyclophora pendulinaria
Eats: PlantsMothsForests and woods6 legs

The sweetfern geometer moth is a small pearly grey moth from North America. It lives in damp forests. Its caterpillar is an inchworm that moves by making a loop with its body.

Lives in
North America, from Newfoundland to the Yukon and south to Georgia, in damp forests
Wingspan
1.7 to 2.6 cm (0.67 to 1 in)
Top speed
about 11 km/h (6.8 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It cannot bite or sting.
What does it eat?
Its caterpillars eat the leaves of sweetfern and alder bushes.
For real!Photo of Sweetfern geometer moth
Picture by Unspecified, University of British Columbia. CC BY 3.0, via Wikimedia Commons.

How big is it?

How wide are its wings?

Sweetfern geometer moth wings about 2.6 cm tip to tip (1 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 4 grains of rice in a rowcould fly across a whole football pitch in 34 seconds

How big is Sweetfern geometer moth compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

It lives across a huge area, from Newfoundland and Labrador in the east to the Yukon in the far north west.

2

You can see it flying from April all the way to October.

3

Its caterpillars eat sweetfern, which gave the moth its name, and alder leaves.

you asked

Most asked questions about Sweetfern geometer moth

?What does the sweetfern geometer moth eat?

Its caterpillars eat sweetfern and alder leaves.

?How big is the sweetfern geometer moth?

Its open wings measure about 17 to 26 millimetres across.

For bug experts

Scientific name
Cyclophora pendulinaria
Group
Moths
Family
Geometridae
Classification
Insecta > Lepidoptera > Geometridae
Lives on
North America
Also known as
Pearly-grey wave

Where the facts come from

  1. Cyclophora pendulinaria (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 Unspecified, University of British Columbia. CC BY 3.0, 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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Also at home here: Forests and woods

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