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What is the top layer on an insect?
Epicuticle
What is the middle layer on an insect?
Cuticle
What is the bottom layer on an insect?
Epidermis
Metamorphosis
A change in form during development
e.g. - egg to caterpillar
- caterpillar to pupa
- pupa to adult
Ametabolous Insects: Ametabolism
egg→nymph → nymph → nymph → adult (sexually mature & active)
• Apterygota: no wings
Hemimetabolism or Incomplete Metamorphosis
• egg→nymph → nymph → nymph → adult (sexually mature & active)
• Wing pads present in juveniles, wings in adults
• Juveniles are called nymphs
Stadium:
Diapause:
A period of arrested development, often in the pupal
