Pupal development is a stage in the life cycle of insects, particularly in those that undergo complete metamorphosis, such as butterflies and beetles. During this phase, the insect transforms from a larva into an adult. The larva enters a protective casing called a pupa or chrysalis, where significant changes occur. Inside the pupa, the insect's body is reorganized and restructured. This process can take days to weeks, depending on the species and environmental conditions. Once development is complete, the adult insect emerges, ready to live and reproduce, continuing the cycle of life.