The insect then equalizes its blood pressure. The insect then releases a hormone called bursicon which causes the exoskeleton to harden by going through a process called tanning or sclerotization. As the insect grows and molts, certain changes occur during each instar. These changes are called metamorphosis. The larva changes into a pupal or resting stage, where all of the body is rearranged and emerges in a different form.
High levels causes larval development.
Low levels cause the change to the adult. 5. When the adult emerges, it pulls itself from the skin and must fill out its body parts by pumping blood into the wings etc. Some insects sexually mature at this point 2. Most males have sperm 3. Females may have to wait or feed to develop eggs 4.