Answer:
It is the most radical case of metamorphosis in insects and probably the best known to all. One of the most typical examples is that of Lepidoptera (butterflies and moths), but Coleoptera (beetles), Hymenoptera (bees, wasps and ants) and Diptera (flies and mosquitoes) are also holometabolous.
In complex, complete or holometabolous metamorphosis, insects hatch in the form of a larva, a very premature phase of the developing organism that is far morphologically from the adult phase and that, as in the previous case, does not share habitat or food with adults. . These larvae grow, like the nymphs in the hemimetabola metamorphosis, by successive molts until they reach sufficient size to undergo the metamorphosis process itself, at which time they carry out their last molt.
After the last larval phase, the larva normally enters a stage of inactivity, in which it stops feeding and remains immobile; This phase is called the pupal stage (forming the pupa, or chrysalis in the case of butterflies). Sometimes, at the end of this phase, organisms already start to look quite like adults due to the structural reorganizations that take place at the anatomical level and the appearance of new organs and tissues.
Once the transformation process is complete, the organism reactivates and definitively acquires its sexually mature adult form and fully formed wings.
Step-by-step explanation:
Just as in the hemimetabolos the appearance of the wings is an appreciable process throughout development, in the holometabolos they form inside the body and generally begin to be visible at the end of the pupal phase. This is why they are also called endopterigotes (from the Latin endo- = "inside" + pteron = "wings").