Light Brown Apple Moth

Pest: Light brown apple moth (Epiphyas postvittana)

Pest Type: Insect Pest

Major Identifying Features: LBAM is an exotic pest native to Australia, mature larval stages are pale to medium green with a light yellow-tan head, first segment  is greenish-brown with no dark markings, larvae are 1/2 to 3/4 inch long, larvae has to be identified by a professional agricultural commisioner

Life Cycle: Complete metamorphosis, 4 stages (egg, larva, pupa, adult), 2-4 generations per year, overwinter as second to fourth-stage larvae, adults emerge after 1-3 weeks after pupation and mate soon after, females deposit eggs at night un the upper side of grape leaves, eggs are laid in masses and count 20-50, larvae emerge 1-2 weeks after, larvae produce webbing

Pest Rating: Moderate

Management Rating: Moderate

Host/Season/Outbreak Information: Hosts include grapes

Damage Information: Overwintering larvae may feed on buds, in spring on flowers and summer on fruit

Management Options: Mechanical control and monitoring by trapping with pheromone traps, removing mummified fruit and overwintering sites under vines, biological control with parasitic wasps and Bacillus thuringiensiscultural control with sanitation, quarantine restrictions in California, chemical control when necessary with insecticides



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