Bug Wiki
Sticker of Housefly
Bug card No. 0755 of 1,500

Housefly

Musca domestica

The housefly is the grey fly that buzzes around our homes. It has big red eyes, a hairy body and four dark stripes on its back. It can walk upside down on the ceiling and tastes food with its feet.

Lives in
All over the world where people live, from the Arctic to the tropics
Length
6 to 7 mm (0.24 to 0.28 in)
Wingspan
1.3 to 1.5 cm (0.51 to 0.59 in)
Top speed
about 7 km/h (4.3 mph)
Flying, estimate
Can it hurt you?
Harmless
It does not bite or sting, but it can carry germs onto food. Cover your food and wash your hands.
What does it eat?
It eats runny food and spits on solid food to make it soft enough to slurp up with its spongy mouth. Its maggots grow in rotting food and waste.
For real!Photo of Housefly
Picture by USDAgov. CC BY 2.0, via Wikimedia Commons.

How big is it?

How long is it?

Housefly 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)

How wide are its wings?

Housefly wings about 1.5 cm tip to tip (0.59 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)
small enough to sit on your fingernailcould fly across a whole football pitch in 54 secondsmoves 280 times its own body length every second

How big is Housefly compared to YOU?

Just maths in your browser. Nothing is saved or sent anywhere.

How fast is it?

cool stuff

Fun facts

1

It sees about seven times faster than we do, so your hand looks like it moves in slow motion. That is why it is so hard to swat.

2

It has taste buds on its feet and tastes things just by walking on them.

3

It rubs its legs together to clean its feet, so it can taste the next thing it walks on.

4

Sticky pads on its feet let it walk up glass and across the ceiling.

5

To land on the ceiling, it flies straight up and does a half roll at the last moment.

you asked

Most asked questions about Housefly

?Do houseflies bite?

No. Houseflies cannot bite, but they can carry germs onto food.

?How long does a housefly live?

Usually two to four weeks.

?Why is it so hard to swat a fly?

It sees movements much faster than we do, so it notices your hand coming and flies away.

For bug experts

Scientific name
Musca domestica
Group
Flies and mosquitoes
Family
Muscidae
Classification
Insecta > Diptera > Muscidae
Lives on
Europe, Asia, Africa, North America, South America, Australia and Oceania

Where the facts come from

  1. Housefly (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 USDAgov. CC BY 2.0, 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: Flies and mosquitoes

Also at home here: Houses and farms