Eggs are laid on leaves near fruit or on the fruit and hatch in about 8 to 14 days. The larvae, slightly bigger than OFM larvae feed inside the fruit for about 3 to 4 weeks. In contrary to OFM larvae, which very rarely feed on the apple seeds, the codling moth larvae will often feed on seeds inside the apple core. Most infested fruit will prematurely drop in June. Second generation moths will fly again in mid July and August.
Pheromone traps are an excellent tool for monitoring populations of adult male codling moths.
The second application, if necessary, can be applied about 2 - 3 weeks later. Under low pressure, mating disruption may represent a valuable alternative for conventional insecticides. The Isomate C pheromones are commercially available for the mating disruption of this pest. Petal fall is a crucial timing for a wide range of pests of apples. Although both Agri-Mek and Provado are rated as having moderate toxicity against Stethorus, both are systemic and thus the period of activity is very brief.