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Mydas fly

Mydas clavatus

The mydas fly is a big black fly with a bright orange band on its body. It looks a lot like a stinging wasp, but it is only pretending. Its feelers end in little clubs.

Lives in
Eastern North America, in woods, fields, meadows and gardens
Length
2.5 to 3 cm (0.98 to 1.2 in)
Top speed
about 15 km/h (9.3 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It pretends to sting by curling its tail, but it has no sting at all.
What does it eat?
The grown-up flies drink nectar and eat pollen from flowers like milkweed and bee balm. The larvae hunt beetle grubs inside rotting trees.
For real!Photo of Mydas fly
Picture by Internet Archive Book Images. No restrictions, via Wikimedia Commons.

How big is it?

How long is it?

Mydas fly about 3 cm long (1.2 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)
as long as 5 grains of rice in a rowcould fly across a whole football pitch in 25 secondsmoves 140 times its own body length every second

How big is Mydas fly compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

Its wings can stretch more than 5 centimetres from tip to tip.

2

It copies the look of spider wasps so that birds are scared of it.

3

It even curls and jabs its tail end, acting as if it could sting.

4

Its larvae live in old rotting trees and eat the grubs of other beetles.

5

The grown-up flies come out in the middle of summer.

you asked

Most asked questions about Mydas fly

?Does the mydas fly sting?

No. It only looks and acts like a wasp, but it has no sting.

?What does a mydas fly eat?

The adults drink nectar and eat pollen. The larvae eat beetle grubs in rotten wood.

?How big is a mydas fly?

It is about 2,5 to 3 centimetres long, a really big fly.

For bug experts

Scientific name
Mydas clavatus
Group
Flies and mosquitoes
Family
Mydidae
Classification
Insecta > Diptera > Mydidae
Lives on
North America
Also known as
Clubbed mydas fly

Where the facts come from

  1. Mydas clavatus (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 Internet Archive Book Images. No restrictions, 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: Flies and mosquitoes

Also at home here: Gardens and meadows