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Sticker of White butterfly parasite wasp
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White butterfly parasite wasp

Cotesia glomerata

The white butterfly parasite wasp is a tiny black wasp with two pairs of wings. It has a sneaky way of growing up. Its babies live inside the caterpillars of white butterflies, the ones that munch on cabbages.

Lives in
Most of Europe, and also Africa, Australia and the Americas, in gardens and fields
Length
3 to 7 mm (0.12 to 0.28 in)
Top speed
about 15 km/h (9.3 mph)
Flying, estimate
What does it eat?
The grown-up wasps sip nectar from flowers. The larvae grow inside a cabbage white caterpillar and feed on it from the inside.
For real!Photo of White butterfly parasite wasp
Picture by Lennart Tange on Flickr. CC BY 3.0, via Wikimedia Commons.

How big is it?

How long is it?

White butterfly parasite wasp about 7 mm long (0.28 in)A grain of rice about 6 mm (0.24 in)A toy building brick about 3.2 cm (1.3 in)
small enough to sit on your fingernailcould fly across a whole football pitch in 25 secondsmoves 600 times its own body length every second

How big is White butterfly parasite wasp compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

A mother wasp puts between 16 and 52 eggs into one single caterpillar.

2

After about two to three weeks the larvae crawl out and spin a cluster of little yellow cocoons, like a pile of tiny eggs.

3

From egg to grown-up wasp takes only about three to four weeks.

4

The boys come out of their cocoons first and fly away.

5

Even this little wasp has enemies: even tinier wasps lay their eggs in its cocoons.

you asked

Most asked questions about White butterfly parasite wasp

?What are the yellow cocoons next to a caterpillar?

They are often the cocoons of this little wasp. Its larvae grew inside the caterpillar and then came out to spin them.

?How big is the white butterfly parasite wasp?

It is only 3 to 7 millimetres long.

For bug experts

Scientific name
Cotesia glomerata
Named by
Linnaeus, 1758
Group
Wasps and hornets
Family
Braconidae
Classification
Insecta > Hymenoptera > Braconidae
Lives on
Europe, Africa, Australia and Oceania, North America, South America
Also known as
White butterfly parasite

Where the facts come from

  1. Cotesia glomerata (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 Lennart Tange on Flickr. CC BY 3.0, 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: Wasps and hornets

Also at home here: Gardens and meadows