The caterpillars (and the adult moths) are very similar in appearance — 2¼ inches long, pale green with four long, bright red knobs on top of the head, and a yellow knob above its tail end.

A few weeks ago, I discovered a large, bright green caterpillar in the yard. It was the size of my thumb with small dark spots and several hairy spines on its back. The caterpillar was inching through ...

A bright green caterpillar with a saddle-like brown marking on its back has been munching its way through some trees on Apostle Islands. The saddled prominent caterpillar is native to the area ...

Hornworm caterpillars can grow to over six inches long, and unfortunately, they have a tendency to devour plants, making them unpopular with farmers and gardeners alike. However, they’re vital ...