From the ArcaMax Publishing, Gardening Newsletter:
http://www.arcamax.com/news/gardening/s-2533-605587
Apple maggots are small, white caterpillar that tunnel into apples, deforming the fruits. To control them, destroy infested fruits and hang one maggot trap (red sphere coated with a sticky substance) in dwarf trees and 3 in standard trees.
This news arrived on: 06/19/2009