, the development time at 25 ??C (77 ??F) is 8.5 days,[5][6][7] at 18 ??C (64 ??F) it takes 19 days[5][6] and at 12 ??C (54 ??F) it takes over 50 days.[5][6] Under crowded conditions, development time increases,[8] while the emerging flies are smaller.[8][9] Females lay some 400 eggs (embryos), about five at a time, into rotting fruit or other suitable material such as decaying mushrooms and sap f