Bug Wiki
Sticker of Red-underwing skipper
Bug card No. 3606 of 4,939

Red-underwing skipper

Spialia sertorius
Eats: PlantsButterfliesGardens and meadows6 legs

The red-underwing skipper is a tiny butterfly with dark wings covered in small white spots. Underneath, its wings are a warm cinnamon red, which gives it its name. It loves warm, dry grassland on limestone.

Lives in
Western, Central and Southern Europe and North Africa, in dry, warm grassland
Wingspan
2.2 to 2.6 cm (0.87 to 1 in)
Top speed
about 28 km/h (17 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It does not bite or sting.
What does it eat?
Its caterpillars eat salad burnet, a small meadow plant.
For real!Photo of Red-underwing skipper
Picture by Charles J. Sharp. CC BY-SA 4.0, via Wikimedia Commons.

How big is it?

How wide are its wings?

Red-underwing skipper 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 14 seconds

How big is Red-underwing skipper 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 only about 2.2 to 2.6 centimetres from tip to tip.

2

It flies from April to September, often in two families a year.

3

The butterflies of the second family in summer are smaller than the spring ones.

4

It does not live in Scandinavia or Great Britain, and it has died out in the Netherlands.

you asked

Most asked questions about Red-underwing skipper

?Why is it called the red-underwing skipper?

Because the underside of its wings is cinnamon red.

?What does the red-underwing skipper eat?

Its caterpillars eat salad burnet.

For bug experts

Scientific name
Spialia sertorius
Group
Butterflies
Family
Hesperiidae
Classification
Insecta > Lepidoptera > Hesperiidae
Lives on
Europe, Africa

Where the facts come from

  1. Spialia sertorius (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 Charles J. Sharp. CC BY-SA 4.0, 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.

Bug Wiki honey jar For grown-ups: Bug Wiki is free, with no ads and no tracking. A small tip helps keep it online.Leave a tip

More from the same group: Butterflies

Also at home here: Gardens and meadows

Honey jarfor grown-ups