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Sticker of Western black horse fly
Bug card No. 4660 of 4,939

Western black horse fly

Tabanus punctifer
Eats: BloodFlies and mosquitoesGardens and meadows6 legs

The western black horse fly is a big fly with a creamy white, hairy front body and an all-black back end. It lives in the hot south and west of the United States and in Mexico. The female needs a meal of blood before she can lay her eggs.

Lives in
Southern and western United States, Mexico and Canada
Length
2 cm (0.81 in)
Top speed
about 27 km/h (17 mph)
Flying, estimate
Can it hurt you?
Can bite
The female can give a painful bite and may pass on germs to animals. Keep away from it and tell a grown-up if one bites you.
What does it eat?
Females bite horses, farm animals and sometimes people to drink blood for their eggs.
For real!Photo of Western black horse fly
Picture by Darin J McGuire. CC BY 4.0, via Wikimedia Commons.

How big is it?

How long is it?

Western black horse fly about 2 cm long (0.81 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 3 grains of rice in a rowcould fly across a whole football pitch in 14 secondsmoves 370 times its own body length every second

How big is Western black horse fly compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

Only the female bites, because she needs blood to make her eggs.

2

It lives from California to Texas and from Utah down into Mexico.

3

By biting different animals it can carry germs and tiny parasites from one to another.

you asked

Most asked questions about Western black horse fly

?Does the western black horse fly bite?

Yes, the female does. She bites horses, farm animals and sometimes people.

?How big is the western black horse fly?

About 2 centimetres long, much bigger than a house fly.

For bug experts

Scientific name
Tabanus punctifer
Group
Flies and mosquitoes
Family
Tabanidae
Classification
Insecta > Diptera > Tabanidae
Lives on
North America
Also known as
Western horse fly

Where the facts come from

  1. Tabanus punctifer (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 Darin J McGuire. CC BY 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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More from the same group: Flies and mosquitoes

Also at home here: Gardens and meadows

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