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Sticker of Ruby tiger
Bug card No. 1176 of 1,500

Ruby tiger

Phragmatobia fuliginosa
Eats: PlantsMothsGardens and meadows6 legs

The ruby tiger is a small furry moth with reddish brown front wings. When it opens them, it shows bright rosy red back wings with black spots, like a hidden ruby. Its fuzzy caterpillar is covered in fox-red hairs.

Lives in
Most of Europe, North Africa, Russia, Central Asia and the north of North America, in meadows and open woods
Wingspan
3.5 to 4.5 cm (1.4 to 1.8 in)
Top speed
about 15 km/h (9.3 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It is a soft little moth that cannot bite or sting.
What does it eat?
The caterpillars eat many kinds of plants, such as brambles, dandelions, docks, clover, heather and willows.
For real!Photo of Ruby tiger
Picture by Martiño Cabana Otero. CC BY 4.0, via Wikimedia Commons.

How big is it?

How wide are its wings?

Ruby tiger wings about 4.5 cm tip to tip (1.8 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 8 grains of rice in a rowcould fly across a whole football pitch in 25 seconds

How big is Ruby tiger compared to YOU?

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

How fast is it?

cool stuff

Fun facts

1

On warm winter days its hairy caterpillars sometimes come out of hiding and scurry fast across paths and roads.

2

In the south of England it has two families a year, but in the north only one.

3

Some ruby tigers have yellow back wings instead of red ones.

4

It likes rough places like roadsides, railway banks and weedy fields.

5

Its eggs are reddish grey and its pupa is black with yellow rings.

you asked

Most asked questions about Ruby tiger

?What does the ruby tiger caterpillar eat?

Lots of different low plants, like dandelions, docks, clover, brambles and heather.

?When can you see ruby tiger moths?

From about May to August, depending on where you live.

?How big is the ruby tiger?

Its wings are about 3.5 to 4.5 centimetres across.

For bug experts

Scientific name
Phragmatobia fuliginosa
Named by
Linnaeus, 1758
Group
Moths
Family
Erebidae
Classification
Insecta > Lepidoptera > Erebidae
Lives on
Europe, Africa, Asia, North America

Where the facts come from

  1. Phragmatobia fuliginosa (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 Martiño Cabana Otero. 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: Moths

Also at home here: Gardens and meadows