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The process whose specific outcome is the progression of the prepupa over time, from its formation to the mature structure. The prepupal stage is a life stage interposed between the larval and the pupal stages in insects that undergo a complete metamorphosis. The start of the pre-pupal stage is marked by pupariation, and the end is marked by pupation.
See also the fly_anatomy.ontology term 'prepupa ; FBbt:00002952'.