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Sticker of Eastern comma
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Eastern comma

Polygonia comma

The eastern comma is an orange-brown butterfly with jagged wing edges. Underneath, its wings are striped brown like a dead leaf, with a tiny silver mark shaped like a comma. That little mark gives the butterfly its name.

Lives in
Eastern North America, in woods near rivers, ponds and marshes
Wingspan
4.5 to 6.4 cm (1.8 to 2.5 in)
Top speed
about 15 km/h (9.3 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. Its caterpillar is spiny, but the butterfly is gentle.
What does it eat?
It seldom visits flowers. Instead it sips tree sap, juice from rotting fruit, salty puddles and even dung. Its caterpillars eat leaves of nettles, elms, hops and other plants.
For real!Photo of Eastern comma
Picture by JeffreyGammon. CC BY 4.0, via Wikimedia Commons.

How big is it?

How wide are its wings?

Eastern comma wings about 6.4 cm tip to tip (2.5 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 toy building brickscould fly across a whole football pitch in 25 seconds

How big is Eastern comma compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

There is a summer look and a winter look: in summer the back wings are black on top, in winter they are reddish orange.

2

The grown-up caterpillar folds a leaf together with silk to make a little daytime tent.

3

The caterpillar eats at night and hides in its tent during the day.

4

The winter butterflies sleep through the cold months, and some fly south instead.

5

It looks very much like its cousin, the question mark butterfly. The shape of the silver mark tells them apart.

you asked

Most asked questions about Eastern comma

?Why is it called the eastern comma?

Because of the small silver comma-shaped mark under its back wings, and because it lives in eastern North America.

?What does the eastern comma eat?

It drinks tree sap, juice from rotting fruit and minerals from puddles, and only seldom visits flowers.

?How big is the eastern comma?

Its wings are about 4.5 to 6.4 centimetres across.

For bug experts

Scientific name
Polygonia comma
Group
Butterflies
Family
Nymphalidae
Classification
Insecta > Lepidoptera > Nymphalidae
Lives on
North America

Where the facts come from

  1. Polygonia comma (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 JeffreyGammon. CC BY 4.0, Wikimedia Commons. The round sticker of this bug is cut from the same 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.

More from the same group: Butterflies

Also at home here: Forests and woods