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Sticker of Sieve-winged snailkiller
Bug card No. 3837 of 4,939

Sieve-winged snailkiller

Coremacera marginata

The sieve-winged snailkiller is a slim, dark grey fly with reddish eyes. Its grey wings are covered in pale spots. The grown-up fly is gentle, but its babies are snail hunters.

Lives in
Most of Europe and the Near East, in grassland and woodland
Length
0.7 to 1 cm (0.28 to 0.39 in)
Top speed
about 8.9 km/h (5.5 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It does not bite or sting people.
What does it eat?
The grown-up fly sips nectar from flowers or drinks dew. Its babies hunt and eat land snails.
For real!Photo of Sieve-winged snailkiller
Picture by Hectonichus. CC BY-SA 3.0, via Wikimedia Commons.

How big is it?

How long is it?

Sieve-winged snailkiller about 1 cm long (0.39 in)A grain of rice about 6 mm (0.24 in)A toy building brick about 3.2 cm (1.3 in)
small enough to sit on your fingernailas long as 1.5 grains of rice in a rowcould fly across a whole football pitch in 42 secondsmoves 250 times its own body length every second

How big is Sieve-winged snailkiller compared to YOU?

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cool stuff

Fun facts

1

It grows to 7 to 10 millimetres long.

2

Its babies, called larvae, attack and eat snails that live on land.

3

Its feelers point straight forward and have a hairy tip.

4

It belongs to a family of flies called marsh flies or snail-killing flies.

you asked

Most asked questions about Sieve-winged snailkiller

?What does the sieve-winged snailkiller eat?

The grown-up drinks nectar and dew. Its babies eat land snails.

?Is the sieve-winged snailkiller dangerous?

No. It is harmless to people. Only snails need to watch out.

For bug experts

Scientific name
Coremacera marginata
Named by
Fabricius, 1775
Group
Flies and mosquitoes
Family
Sciomyzidae
Classification
Insecta > Diptera > Sciomyzidae
Lives on
Europe, Asia

Where the facts come from

  1. Coremacera marginata (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 Hectonichus. CC BY-SA 3.0, 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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