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Sticker of The uncertain
Bug card No. 4341 of 4,939

The uncertain

Hoplodrina octogenaria
Name means: “not sure, because it is easily confused with two look-alike moths”
Eats: PlantsMothsGardens and meadows6 legs

The uncertain is a brown moth from Europe and Asia. It has a funny name because it looks so much like two other moths that even experts are not sure which is which. Its wings have darker spots outlined in white.

Lives in
Europe and Asia, from Europe and Turkey to Siberia, Mongolia, Korea and northern China
Wingspan
2.8 to 3.4 cm (1.1 to 1.3 in)
Top speed
about 13 km/h (8.1 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It does not bite or sting.
What does it eat?
Its caterpillars eat dead-nettle, primrose, chickweed and dock.
For real!Photo of The uncertain
Picture by Fvlamoen. CC BY-SA 3.0, via Wikimedia Commons.

How big is it?

How wide are its wings?

The uncertain wings about 3.4 cm tip to tip (1.3 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 6 grains of rice in a rowcould fly across a whole football pitch in 29 seconds

How big is The uncertain compared to YOU?

Just maths in your browser. Nothing is saved or sent anywhere.

How fast is it?

cool stuff

Fun facts

1

Its wings are about 3 centimetres from tip to tip.

2

To tell it apart from its look-alikes for sure, scientists have to look at it under a microscope.

3

The females are darker than the males.

4

In Belgium and the Netherlands it flies from late May to August.

you asked

Most asked questions about The uncertain

?Why is the moth called the uncertain?

Because it is so easy to confuse with two very similar moths.

?What does the uncertain eat?

Its caterpillars eat dead-nettle, primrose, chickweed and dock.

For bug experts

Scientific name
Hoplodrina octogenaria
Group
Moths
Family
Noctuidae
Classification
Insecta > Lepidoptera > Noctuidae
Lives on
Europe, Asia
Also known as
Uncertain

Where the facts come from

  1. Hoplodrina octogenaria (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 Fvlamoen. CC BY-SA 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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