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Roly Polys actually aren't bugs at all. They are terrestrial Crustaceans. And they're related to shrimp.
2. Their color ranges, from gray to brown. Sometimes they are two toned because are molting. The back half molts and then the front half. They molt 4 to 5 times in their lives
3. On rare occasions you may find a bright blue or purple roly poly.
4.The purple/blue roly poly is sick if you find it like this. The color is caused by the retrovirus which causes crystals to form beneath the roly poly's exoskeleton. The virus is not dangerous to humans.

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9y ago

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