Biology 3484A/B Lecture Notes - Hemimetabolism, Elytron, Endopterygota
24 Dec 2012
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Document Summary
In incomplete metamorphosis, wings develop externally in nymphs and wing pads are clearly visible. Type 2 complete metamorphosis: the stages are egg, larva, pupa, and adult. These stages occur in all insects that undergo complete metamorphosis. There is drastic change in form from egg to adult. The egg becomes a larva and the larva becomes different instars. It then becomes a pupa and then an adult. Most larvae have basic chewing mouthparts regardless of the mouthpart type in the adult. The pupal stage usually does not feed and is inactive or quiet. Adults are capable of reproduction and have wings. Sexual reproduction occurs in most groups of insects. Larvae (and nymphs in incomplete metamorphosis) can be called immatures. Larvae and adults often live in different habitats. Adults often don"t feed, or feed very little (ex. drink nectar from flowers). Adults are the winged form of the insect (in both incomplete and complete metamorphosis).
