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Sticker of Mouse bot fly
Bug card No. 2932 of 4,939

Mouse bot fly

Cuterebra fontinella
Name means: “Cuterebra comes from Latin words meaning skin and borer”

The mouse bot fly is a black and yellow fly that looks a lot like a bee. Its babies grow up under the skin of mice, mostly the white-footed mouse. The grown-up flies cannot even eat and live only a short time.

Lives in
Most of the United States, southern Canada and northern Mexico
Top speed
about 8 km/h (5 mph)
Flying, estimate
Can it hurt you?
Better not touch
The fly cannot bite or sting. Very rarely its larvae have been found in people, making a bump in the skin.
What does it eat?
Its larvae live under the skin of mice and feed there. The grown-up flies do not eat at all.
For real!Photo of Mouse bot fly
Picture by USGS Bee Inventory and Monitoring Lab. Public domain, via Wikimedia Commons.

How fast is it?

cool stuff

Fun facts

1

The female lays up to 2,000 eggs on plants near the homes of mice.

2

The eggs hatch when a warm mouse brushes past, and the tiny larvae climb on.

3

The males guard their own patch, flying in figure-eight and oval loops to chase other males away.

4

Its pupa can rest in the ground for up to a whole year if the weather is bad.

5

It likes leafy forests near running streams, especially along the edges.

you asked

Most asked questions about Mouse bot fly

?Is the mouse bot fly dangerous to people?

Very rarely. Its larvae have been found in people only in rare cases. The grown-up fly cannot bite or sting.

?What does the mouse bot fly look like?

It is a black and yellow fly that looks a lot like a bee.

For bug experts

Scientific name
Cuterebra fontinella
Group
Flies and mosquitoes
Family
Oestridae
Classification
Insecta > Diptera > Oestridae
Lives on
North America

Where the facts come from

  1. Cuterebra fontinella (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 USGS Bee Inventory and Monitoring Lab. Public domain, 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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More from the same group: Flies and mosquitoes

Also at home here: Forests and woods

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