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Sticker of Common eastern physocephala
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Common eastern physocephala

Physocephala tibialis

The common eastern physocephala is a thick-headed fly with a yellow face and a black body with thin white stripes. It hangs around flowers, where bees come to feed. It has a sneaky trick: it lays its egg inside a bee.

Lives in
Eastern United States, from Massachusetts to Florida and west to Wisconsin and Texas
Top speed
about 8 km/h (5 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless to people. It cannot bite or sting.
What does it eat?
Its larva grows up inside the body of a bee. Grown-up flies visit flowers.
For real!Photo of Common eastern physocephala
Picture by Rhododendrites. CC BY-SA 4.0, via Wikimedia Commons.

How fast is it?

cool stuff

Fun facts

1

The female lays an egg inside a bee's belly, and the larva grows up inside the bee.

2

When the larva is big, the bee dies and the larva turns into a pupa inside it.

3

A bee with a larva inside sometimes starts to dig into the ground and visits different flowers than before.

4

It does not pick special flowers. It waits for bees on many kinds.

you asked

Most asked questions about Common eastern physocephala

?Is the common eastern physocephala dangerous?

Not to people. It cannot bite or sting. It only uses bees to raise its young.

?Where does the common eastern physocephala live?

In the eastern United States, often near flowering plants.

For bug experts

Scientific name
Physocephala tibialis
Group
Flies and mosquitoes
Family
Conopidae
Classification
Insecta > Diptera > Conopidae
Lives on
North America

Where the facts come from

  1. Physocephala tibialis (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 Rhododendrites. 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.

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