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Sticker of Gray sanddragon
Bug card No. 2001 of 4,939

Gray sanddragon

Progomphus borealis

The gray sanddragon is a fairly big dragonfly that lives by sandy streams in dry, desert places. Its body is greyish brown, and its black tail has yellow marks on top of every part. The tip of its tail is a little swollen, like a tiny club.

Lives in
South-western United States and Mexico, along sandy streams, rivers and lakes in desert areas
Length
5.7 to 6.2 cm (2.2 to 2.4 in)
Top speed
about 41 km/h (25 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. Dragonflies have no sting, so just enjoy watching it fly.
What does it eat?
It catches soft flying insects such as mosquitoes, flies, moths and flying ants. Its young live in the water and eat water insects, and sometimes even small fish and tadpoles.
For real!Photo of Gray sanddragon
Picture by Pompilid. CC BY-SA 3.0, via Wikimedia Commons.

How big is it?

How long is it?

Gray sanddragon about 6.2 cm long (2.4 in)A toy building brick about 3.2 cm (1.3 in)A crayon about 9 cm (3.5 in)A banana about 18 cm (7.1 in)
as long as 2 toy building bricks in a rowcould fly across a whole football pitch in 9.2 secondsmoves 180 times its own body length every second

How big is Gray sanddragon compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

Its young, called nymphs, hide buried in the sand. They keep the tip of their tail sticking up and pump water in and out of it to breathe.

2

When a stream starts to dry up, the nymphs swim upstream to find water.

3

Unlike most dragonflies, its nymphs climb out of the water and turn into adults in the daytime.

4

It does not like the cold. On cool or cloudy days you will hardly ever see it flying.

5

The mother lays her eggs alone. She hovers over a shallow stream and dips the tip of her tail into the water.

you asked

Most asked questions about Gray sanddragon

?What does the gray sanddragon eat?

Soft flying insects like mosquitoes, flies and moths. Its young eat water insects and sometimes tiny fish.

?How big is a gray sanddragon?

It is about 6 centimetres long.

?Is the gray sanddragon dangerous?

No. It has no sting and is harmless to people.

For bug experts

Scientific name
Progomphus borealis
Group
Dragonflies and damselflies
Family
Gomphidae
Classification
Insecta > Odonata > Gomphidae
Lives on
North America

Where the facts come from

  1. Gray sanddragon (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 Pompilid. 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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More from the same group: Dragonflies and damselflies

Also at home here: Ponds, rivers and shores

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