![]() Most apple maggot pupae remain in the soil for one winter, though a few may remain there for two or more years. Full-grown larvae leave the fruit and enter the soil to pupate. Temperatures and fruit hardness influence the rate of development and survivorship of larvae. Typically larvae complete development in about 30 days. The larvae (maggots) feed while tunneling through the fruit flesh. Eggs hatch in 3 to 10 days depending on temperatures. A single female can lay between 300 and 500 eggs over her lifetime, which can last 30 or more days. After mating females lay eggs just under the skin of the host fruit. After emerging, the adult apple maggot feeds for 7 to 10 days until it is sexually mature. Apple maggot flies continue to emerge from the soil throughout the summer and can be active until October. ![]() In late June or early July, adults begin to emerge from the soil. ![]() Apple maggot spends winter in the soil as a pupa.
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