Inside the chrysalis the caterpillar all but dissolves: most larval tissue is broken down and the adult wings and legs grow out of imaginal discs that were already sitting inside it. Temperature changes the tempo of the whole cycle, but the real drivers are two hormones: each ecdysone surge is one molt, while high juvenile hormone means every molt still yields a larva. Incomplete metamorphosis drops the pupal stage entirely, and a grasshopper goes straight from nymph to adult.
Inside the chrysalis the caterpillar all but dissolves: most larval tissue is broken down and the adult wings and legs grow out of imaginal discs that were already sitting inside it. Temperature changes the tempo of the whole cycle, but the real drivers are two hormones: each ecdysone surge is one molt, while high juvenile hormone means every molt still yields a larva. Incomplete metamorphosis drops the pupal stage entirely, and a grasshopper goes straight from nymph to adult.
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