How does the apple maggot evolve from an egg?

The Apple maggot, scientifically known as Rhagoletis pomonella, begins its life as an egg laid by an adult female fly on an Apple or other fruit. Once the egg hatches, the larva burrows into the fruit, feeding on the flesh as it grows. After several weeks, the larva pupates, typically within the fruit or in the soil, eventually emerging as an adult fly. This life cycle allows the Apple maggot to adapt and thrive in its host environment, often leading to co-evolution with fruiting plants.