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Sticker of Garden soldier fly
Bug card No. 1801 of 4,939

Garden soldier fly

Exaireta spinigera

The garden soldier fly is black with a purple metallic shine. Behind its body it has four little spikes with yellow tips. It comes from Australia but has spread to gardens in many parts of the world.

Lives in
Australia, and brought to New Zealand, Hawaii, North America, Europe and Russia
Length
1.4 to 1.6 cm (0.55 to 0.63 in)
Top speed
about 11 km/h (6.8 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It cannot bite or sting.
What does it eat?
Like many soldier flies, its larvae live in rotting plant stuff and help break it down.
For real!Photo of Garden soldier fly
Picture by John Tann from Sydney, Australia. CC BY 2.0, via Wikimedia Commons.

How big is it?

How long is it?

Garden soldier fly about 1.6 cm long (0.63 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 2.5 grains of rice in a rowcould fly across a whole football pitch in 34 secondsmoves 190 times its own body length every second

How big is Garden soldier fly compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

Its body and its larva are both flat.

2

It reached Hawaii in the 1890s and California in 1985.

3

In Europe it was first found in Italy and has since spread to France and the Black Sea coast.

4

The very first one described was found when Australia was still called New Holland.

5

Females are bigger than males.

you asked

Most asked questions about Garden soldier fly

?Is the garden soldier fly harmful?

No. It cannot bite or sting and is harmless to people.

?Where does the garden soldier fly come from?

From Australia. It has since spread to many other countries.

For bug experts

Scientific name
Exaireta spinigera
Group
Flies and mosquitoes
Family
Stratiomyidae
Classification
Insecta > Diptera > Stratiomyidae
Lives on
Australia and Oceania, North America, Europe
Also known as
Blue soldier fly

Where the facts come from

  1. Exaireta spinigera (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 John Tann from Sydney, Australia. CC BY 2.0, 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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