Adult flies usually begin to emerge in mid-June and continue to emerge for about 3 months.
Female flies lay eggs in fruit.
Upon hatching, the maggot feeds and tunnels within the fruit. Abandoned, unsprayed apple and pear trees plus hawthorn and pyracantha are all major sources of infestation. Control should be applied within 1 week of when the first adult flies are trapped. Diazinon and Sevin are also labeled for maggot control. Black Peach Aphid.