What are names of the stages that a fruit fly goes through when maturing from a fertilized egg?

The fruit fly has four stages to its life cycle. These are egg, larva, pupa, and adult. The egg will hatch into a larva after about twenty four hours being lain. The larva will moult twice in its life time. During these moulting periods the cuticle, mouth, hooks, and spiracles will be shed. Pupation will start after the second moult, when the larva will become hard and dark in colour. The puparium is where the metamorphosis takes place. Just before the adult fly emerges from the puparium, the pupa will darken in colour. About twenty four hours before the adult is ready to brake out of the pupa, the folded wings and pigments of the eyes can be seen through the puparium's shell. When the metamorphosis is complete, the adult will force its way out of the top of the puparium. To begin with, the fly looks light in colour with a long abdomen and unexpanded wings, but within a few short hours the fly becomes darker in colour, more rounded in the abdomen, and it will extend its wings. About forty eight hours after emerging from the puparium, female are able to start laying eggs. However, there are only twelve hours of the adult females life that it can be considered to be a virgin. A female fruit fly can store sperm after a single insemination and use it many times for reproduction. This enables the female fruit fly to be fertile for life and lay many eggs with out needing to mate every time.