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Sticker of Early thorn
Bug card No. 1450 of 4,939

Early thorn

Selenia dentaria
Eats: PlantsMothsForests and woods6 legs

The early thorn is a moth with pretty scalloped wing edges, as if someone cut them with wavy scissors. It has a dark smudge at the tip of each front wing. It comes in so many colours that no two look quite the same.

Lives in
Northern Europe and across Asia to Siberia and Mongolia
Wingspan
2.8 to 4 cm (1.1 to 1.6 in)
Top speed
about 14 km/h (8.7 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It cannot bite or sting.
What does it eat?
Its caterpillars eat the leaves of trees such as birch and alder.
For real!Photo of Early thorn
Picture by Ben Sale from UK. CC BY 2.0, via Wikimedia Commons.

How big is it?

How wide are its wings?

Early thorn wings about 4 cm tip to tip (1.6 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 27 seconds

How big is Early thorn compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

It has two families a year. The spring moths are bigger, and the summer ones are much smaller.

2

Three thin lines run across each front wing.

3

In Arctic Norway there is a dwarf kind that is extra small.

4

The caterpillar is orange-brown or reddish brown with small humps on its back.

you asked

Most asked questions about Early thorn

?When can you see the early thorn?

It flies from April to August, in a spring group and a summer group.

?What does the early thorn eat?

Its caterpillars eat the leaves of trees like birch and alder.

For bug experts

Scientific name
Selenia dentaria
Group
Moths
Family
Geometridae
Classification
Insecta > Lepidoptera > Geometridae
Lives on
Europe, Asia

Where the facts come from

  1. Selenia dentaria (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 Ben Sale from UK. CC BY 2.0, 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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More from the same group: Moths

Also at home here: Forests and woods

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