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Sticker of Variable cracker
Bug card No. 4545 of 4,939

Variable cracker

Hamadryas feronia
Eats: PlantsButterfliesRainforests and jungles6 legs

The variable cracker is a butterfly that can make a noise. When another butterfly flies by, the male zooms out with a loud cracking click. Its wings are a mosaic of white, brown and bluish grey, perfect for hiding on tree bark.

Lives in
From Mexico to Brazil and Peru, in open places with trees
Top speed
about 15 km/h (9.3 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It does not bite or sting, it only clicks.
What does it eat?
The grown-ups drink juice from rotting fruit. The caterpillars eat the leaves of climbing vines.
For real!Photo of Variable cracker
Picture by Charles J. Sharp. CC BY-SA 4.0, via Wikimedia Commons.

How fast is it?

cool stuff

Fun facts

1

It likes to sit head down, pressed flat against a tree trunk, where it almost disappears.

2

If another male hears the click, he clicks back. A female stays quiet.

3

In tests, males liked to sit on white spots, while females chose grey ones.

4

Its caterpillar has little spines on its back and comes in two colours: bluish black or greyish green.

5

In Mexico you can see it flying all year round.

you asked

Most asked questions about Variable cracker

?Why is it called a cracker butterfly?

Because the male makes a cracking, clicking sound when he flies out to meet another butterfly.

?What does the variable cracker eat?

The grown-up butterflies drink from rotting fruit, and the caterpillars eat vine leaves.

For bug experts

Scientific name
Hamadryas feronia
Group
Butterflies
Family
Nymphalidae
Classification
Insecta > Lepidoptera > Nymphalidae
Lives on
North America, South America
Also known as
Blue cracker

Where the facts come from

  1. Hamadryas feronia (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 Charles J. Sharp. CC BY-SA 4.0, 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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Also at home here: Rainforests and jungles

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