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Sticker of Eastern flower fly
Bug card No. 1475 of 4,939

Eastern flower fly

Syrphus knabi

The eastern flower fly is a hoverfly with a black belly and bright yellow bands. It hangs in the air around flowers like a tiny helicopter. Its stripes make it look a bit like a wasp, but it is a gentle fly.

Lives in
Eastern United States and Canada
Length
0.7 to 1.3 cm (0.28 to 0.51 in)
Top speed
about 15 km/h (9.3 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It looks a bit like a wasp, but it has no sting at all.
What does it eat?
The grown-ups drink nectar and eat pollen from flowers. The larvae are hunters that eat aphids in trees.
For real!Photo of Eastern flower fly
Picture by Christina Butler from Georgia, United States. CC BY 2.0, via Wikimedia Commons.

How big is it?

How long is it?

Eastern flower fly about 1.3 cm long (0.51 in)A grain of rice about 6 mm (0.24 in)A toy building brick about 3.2 cm (1.3 in)
as long as 2 grains of rice in a rowcould fly across a whole football pitch in 25 secondsmoves 320 times its own body length every second

How big is Eastern flower fly compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

The boy's big eyes touch each other at the top of his head. The girl's eyes are set apart.

2

It is quite rare, so you are lucky if you see one.

3

Its larvae are a gardener's friend, because they eat aphids that suck on tree leaves.

4

Its back legs are yellow with a dark band in the middle.

you asked

Most asked questions about Eastern flower fly

?Can the eastern flower fly sting?

No. It only looks like a wasp. Flies have no sting.

?What does the eastern flower fly eat?

The grown-ups eat nectar and pollen from flowers. The larvae eat aphids.

?How big is the eastern flower fly?

About 7 to 13 millimetres long.

For bug experts

Scientific name
Syrphus knabi
Named by
Shannon, 1916
Group
Flies and mosquitoes
Family
Syrphidae
Classification
Insecta > Diptera > Syrphidae
Lives on
North America

Where the facts come from

  1. Syrphus knabi (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 Christina Butler from Georgia, United States. 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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