Metamorphosis
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<speciesfyi-glossary slug="metamorphosis"></speciesfyi-glossary>Definition
A biological process of dramatic physical transformation in an insect's body structure during its life cycle.
Detailed Explanation
Complete metamorphosis (holometabolism) — egg, larva, pupa, adult — allows larvae and adults to occupy entirely different ecological niches, reducing competition between life stages. Caterpillars eat leaves; butterflies drink nectar. Incomplete metamorphosis (hemimetabolism) in grasshoppers and dragonflies lacks a pupal stage — nymphs resemble small adults. Metamorphosis is regulated by juvenile hormone and ecdysone — its molecular mechanisms are targets for insecticide development.