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Sticker of Hornworm parasitoid wasp
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Hornworm parasitoid wasp

Cotesia congregata

The hornworm parasitoid wasp is a tiny wasp with a surprising way of life. The mother lays her eggs inside big hornworm caterpillars that eat tomato and tobacco plants. Her babies grow up inside the caterpillar, then crawl out and spin little cocoons.

Lives in
North America, wherever tomato and tobacco hornworms live
Top speed
about 22 km/h (14 mph)
Flying, estimate
What does it eat?
Its babies live inside tobacco and tomato hornworm caterpillars and feed there.
For real!Photo of Hornworm parasitoid wasp
Picture by Beatriz Moisset. CC BY-SA 3.0, via Wikimedia Commons.

How fast is it?

cool stuff

Fun facts

1

Together with her eggs, the mother puts a special virus into the caterpillar that stops it from fighting off her babies.

2

The babies come out of the caterpillar 12 to 16 days after the eggs were laid.

3

The grown-up wasps fly out of their cocoons about 4 to 8 days later.

4

One mother can lay around 1700 eggs in her life.

5

Because it attacks hornworms, it helps gardeners protect their tomato plants.

you asked

Most asked questions about Hornworm parasitoid wasp

?What are the little white cocoons on a hornworm?

They are cocoons of hornworm parasitoid wasp babies that grew up inside the caterpillar.

For bug experts

Scientific name
Cotesia congregata
Group
Wasps and hornets
Family
Braconidae
Classification
Insecta > Hymenoptera > Braconidae
Lives on
North America

Where the facts come from

  1. Cotesia congregata (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 Beatriz Moisset. 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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