What are the animals that undergo complete metamorphosis?
I believe complete and incomplete metamorphosis only refer to insects. Amphibians and certain other animals do go through metamorphosis, but it couldn’t be described either as complete or incomplete. Complete metamorphosis involves four stages, egg, larva, pupa and adult. These stages are usually very different. Incomplete metamorphosis has three stages, egg, nymph and adult, and the nymph stage is very much like a miniature version of the adult. They molt to grow, but they don’t completely change like an insect undergoing complete metamorphosis. “About 12% of all insects go through incomplete metamorphosis.” (1) This includes grasshoppers, dragonflies and cockroaches. They get their wings during after the last nymph instar, during the last molt. (2) Insects that undergo complete metamorphosis include butterflies, bees, beetles and flies.
