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Sticker of Razor grinder
Bug card No. 3493 of 4,939

Razor grinder

Henicopsaltria eydouxii
Eats: PlantsTrue bugs and cicadasForests and woods6 legs

The razor grinder is a big brown cicada from eastern Australia. Its name comes from its loud, harsh song, which sounds like a metal grinding machine. The males sing together in big groups at dusk.

Lives in
The east coast of Australia, in eucalyptus forests, and common in Brisbane
Top speed
about 12 km/h (7.5 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It is loud, but it cannot hurt you.
What does it eat?
Like other cicadas, it drinks sap from trees. It feeds quietly in the afternoon before singing in the evening.
For real!Photo of Razor grinder
Picture by Toby Hudson. CC BY-SA 3.0 au, via Wikimedia Commons.

How fast is it?

cool stuff

Fun facts

1

Its front wing alone is about 5 centimetres long.

2

Its song gets louder and louder, stops suddenly and then starts again.

3

If a predator grabs it, it makes a special scared noise to try to escape.

4

In some years there are huge numbers of them, and in other years only a few.

5

It is shy and a fast flyer, so it is hard to get close to one.

you asked

Most asked questions about Razor grinder

?Why is it called the razor grinder?

Because its harsh song sounds like a metal grinder.

?When can I hear the razor grinder?

Mostly in December and January, when the males sing in groups at dusk.

For bug experts

Scientific name
Henicopsaltria eydouxii
Named by
Guérin-Méneville, 1838
Group
True bugs and cicadas
Family
Cicadidae
Classification
Insecta > Hemiptera > Cicadidae
Lives on
Australia and Oceania
Also known as
Laughing razor grinder

Where the facts come from

  1. Henicopsaltria eydouxii (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 Toby Hudson. CC BY-SA 3.0 au, 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: True bugs and cicadas

Also at home here: Forests and woods

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