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Identification
Small purplish-brown moth; greenish-purple larvae web and feed inside grape clusters.
cycle
Life Cycle
Two to three generations per year; overwinters as pupae in leaf litter beneath vines.
warning
Damage Signs
Larvae web berries together and tunnel inside, causing rot, discoloration, and premature fruit drop.
healing
Treatment
Remove and destroy infested berry clusters. Time insecticide applications to egg-laying using pheromone trap monitoring.
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Prevention
Clear fallen leaves and debris from beneath vines in autumn to remove overwintering pupae.