Holometabolous refers to a type of insect development characterized by complete metamorphosis. In this process, insects undergo four distinct life stages: egg, larva, pupa, and adult. Each stage looks different and serves a unique purpose, allowing for specialization in feeding and reproduction. Common examples of holometabolous insects include butterflies, beetles, and flies. During the pupal stage, the insect undergoes significant transformation, reorganizing its body structure. This adaptation allows holometabolous insects to exploit different ecological niches throughout their life cycle, enhancing their survival and reproductive success.