Bug Wiki
Sticker of Hine's emerald
Bug card No. 0737 of 1,500

Hine's emerald

Somatochlora hineana

The Hine's emerald is a dragonfly with a dark green body and two yellow stripes on each side. When it first comes out, its eyes are brown, but after three days they turn bright emerald green. It is very rare and protected by law.

Lives in
A few places in the United States and Canada, in fens and marshes
Length
6.4 cm (2.5 in)
Wingspan
8.9 cm (3.5 in)
Top speed
about 41 km/h (25 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. Dragonflies have no sting. It actually helps by eating mosquitoes.
What does it eat?
The grown-up dragonfly catches mosquitoes and gnats while flying. Its babies live in water and hunt there too.
For real!Photo of Hine's emerald
Picture by USFWS Midwest Region from United States. CC BY 2.0, via Wikimedia Commons.

How big is it?

How long is it?

Hine's emerald about 6.4 cm long (2.5 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)

How wide are its wings?

Hine's emerald wings about 8.9 cm tip to tip (3.5 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 rowwings as wide as 3 toy building brickscould fly across a whole football pitch in 9.2 secondsmoves 180 times its own body length every second

How big is Hine's emerald compared to YOU?

Just maths in your browser. Nothing is saved or sent anywhere.

How fast is it?

cool stuff

Fun facts

1

Its baby, called a nymph, lives in shallow water for 2 to 4 years and sometimes hides in crayfish burrows.

2

To grow up, the nymph climbs a cattail plant, its skin splits open along its back, and the dragonfly climbs out.

3

The flying grown-up lives only about 4 to 6 weeks.

4

A male guards a small patch near the water and chases away other dragonflies.

5

Sometimes many of them hunt together in a big swarm.

you asked

Most asked questions about Hine's emerald

?Why is the Hine's emerald endangered?

Many of the wet places where it lives have been dried out or changed, so it has few homes left.

?What does the Hine's emerald eat?

Small flying insects like mosquitoes and gnats. Its babies hunt in the water.

?How big is a Hine's emerald?

About 6 centimetres long, with wings about 9 centimetres across.

For bug experts

Scientific name
Somatochlora hineana
Group
Dragonflies and damselflies
Family
Corduliidae
Classification
Insecta > Odonata > Corduliidae
Lives on
North America

Where the facts come from

  1. Hine's emerald (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 USFWS Midwest Region from United States. CC BY 2.0, Wikimedia Commons. The round sticker of this bug is cut from the same 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.

More from the same group: Dragonflies and damselflies

Also at home here: Ponds, rivers and shores