a brown cocoon and the exoskeleton of a woolly bear caterpillar.

allergy and background ball bear black brown bug canada caterpillar cocoon colored cryoprotectant dermatitis dried exoskeleton fall fluffy fur hair hairs hatch hibernate insect irritation isabella larvae leaves light metamorphosis moth nature next oblong plant predict pupate pyrrharctia round satae seasons shed silk similarly smooth spinning spiny spring states tan texture textured tiger transformation united weather wild winter woolly wooly