![]() For example, the pupal stage lasts eight to fifteen days in monarch butterflies. The pupal stage may last weeks, months, or even years, depending on temperature and the species of insect. The adult structures grow from imaginal discs. It is during the pupal stage that the adult structures of the insect are formed while the larval structures are broken down. The pupa is a non-feeding, usually sessile stage, or highly active as in mosquitoes. The pupal stage follows the larval stage and precedes adulthood ( imago) in insects with complete metamorphosis. ![]() Pupae may further be enclosed in other structures such as cocoons, nests, or shells. The pupae of different groups of insects have different names such as chrysalis for the pupae of butterflies and tumbler for those of the mosquito family. The act of becoming a pupa is called pupation, and the act of emerging from the pupal case is called eclosion or emergence. The processes of entering and completing the pupal stage are controlled by the insect's hormones, especially juvenile hormone, prothoracicotropic hormone, and ecdysone. ![]() Insects that go through a pupal stage are holometabolous: they go through four distinct stages in their life cycle, the stages thereof being egg, larva, pupa, and imago. Unlike most pupae, tumblers can swim around actively.Ī pupa (from Latin pupa 'doll' plural: pupae) is the life stage of some insects undergoing transformation between immature and mature stages. ![]() Pupa of the rose chafer beetle, Cetonia aurata Tumbler (pupa) of a mosquito. For other uses, see Pupa (disambiguation). ![]()
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