Codling Moth

Pest: Codling moths (Cydia pomonella)

Pest Type: Insect Pest

Major Identifying Features: Codling moth adults are about 1/2 inch to 3/4 inch long, mottled gray wings, blend in well with tree bark, brown coppery band at the tip of their wings, larvae are white worm-like caterpillars with a brown head

Life Cycle: Complete metamorphosis, 4 stages (egg, larva, pupa, adult), overwinter as full-grown larvae within thick, silken cocoons under loose scales of bark and in soil or debris around the base of trees, larvae emerge in early spring (mid March to early April), after mating females lay 30-70 eggs that are disc-shaped on fruit, nuts, leaves, development is more rapidly in warmer weather and climates

Pest Rating: Moderate

Management Rating: Very difficult

Host/Season/Outbreak Information: Hosts include apples, pears, and English Walnuts

Damage Information: Larvae can cause serious damage to fruit crops, often infesting 20%-90% of the fruit

Management Options: Cultural control and prevention by sanitation and removing infested fruit early in the season, cleaning up fruit from the ground, by bagging young fruit right on the tree, by trapping and hanging traps, by trunk banding, biological control with Trichogramma platneri, chemical control with pesticides might be necessary in certain cases

Sources:

http://www.ipm.ucanr.edu

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