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The caterpillars of the white-lined sphinx moth are ordinarily lime green or yellow with black markings. They can grow as big as the width of your hand and have a yellow or orange horn with a ...
Have you spotted a hickory horned devil?. These large, bright green caterpillars may look dangerous, but they are nothing to be afraid of and will eventually turn into a regal moth, which can have ...
The hickory horned devil — a neon-turquoise caterpillar that can grow to be the size of a hot dog and is crowned with menacing black-tipped red horns– is an uncommon find in Pennsylvania.