Caddisflies are insects that lay their eggs on the bottom of streams. The eggs mature into larvae, and eventually the larvae pupate, move to the surface of the stream, shed their pupal membranes, and emerge as winged adults. Caddisflies demonstrate

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Caddisflies go through complete metamorphosis, which involves distinct egg, larval, pupal, and adult stages. This is different from incomplete metamorphosis, which involves only egg, nymph, and adult stages. Alternation of generations and animal diversification are not relevant to the life cycle of caddisflies.

Caddisflies Are Insects That Lay Their Eggs on the Bottom