former caterpillar pupae that have been left behind

tree leaf nature green plant branch trunk flower soil autumn forest wildlife wood woodland rock produce former cocoon caterpillars have been laid caterpillar pupae left behind wild spiny bug insect brown texture metamorphosis closeup macro black background spring animal pupate moth leaves larvae pyrrharctia isabella winter spinning hairs irritation tiger united states round silk transformation dried fluffy hibernate woolly bear oblong allergy ball hair cryoprotectant dermatitis fall predict attach canada adhere hatch wooly seasons