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Sticker of Small blue
Bug card No. 1231 of 1,500

Small blue

Cupido minimus
Eats: Nectar and pollenButterfliesGardens and meadows6 legs

The small blue is a tiny butterfly, and funny enough, it is hardly blue at all. It is mostly dark brown, and the male has just a sprinkle of blue near his body. Underneath, its wings are silvery with little black dots.

Lives in
Europe and across Asia to Siberia, Mongolia and Kamchatka, in chalky grassland, old quarries and sunny woodland edges
Wingspan
1.6 to 2.7 cm (0.63 to 1.1 in)
Top speed
about 10 km/h (6.2 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It cannot bite or sting.
What does it eat?
The butterflies visit flowers. The caterpillars eat the flowers and young seed pods of pea plants, especially kidney vetch.
For real!Photo of Small blue
Picture by Charles J. Sharp. CC BY-SA 4.0, via Wikimedia Commons.

How big is it?

How wide are its wings?

Small blue wings about 2.7 cm tip to tip (1.1 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 38 seconds

How big is Small blue compared to YOU?

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

How fast is it?

cool stuff

Fun facts

1

It is the smallest butterfly in Britain.

2

A mother lays just one egg on a flower and hides it between the tiny blossoms.

3

After laying an egg, she rubs her tail on the flower to leave a smell that tells other mothers: this one is taken.

4

If two caterpillars hatch on the same flower, one may eat the other.

5

Males sip salt and minerals from mud puddles and even from dung.

you asked

Most asked questions about Small blue

?Is the small blue really blue?

Not much. It is mostly dark brown. Only the male has a few blue scales near his body.

?How big is the small blue?

Its wings are only about 1.6 to 2.7 centimetres from tip to tip.

?What does the small blue caterpillar eat?

The flowers and young seed pods of pea plants, especially kidney vetch.

For bug experts

Scientific name
Cupido minimus
Group
Butterflies
Family
Lycaenidae
Classification
Insecta > Lepidoptera > Lycaenidae
Lives on
Europe, Asia

Where the facts come from

  1. Small blue (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 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 hello@bugwiki.app and we will fix it.

More from the same group: Butterflies

Also at home here: Gardens and meadows