PHENOLOGY AND PHEROMONE TRAP MONITORING OF THE GRAPE BERRY MOTH, ENDOPIZA VITEANA CLEMENS (LEPIDOPTERA: TORTRICIDAE) IN MISSOURI

Abstract

Seasonal phenology studies were conducted for the grape berry moth (GBM), Endopiza viteana Clemens, by collecting and evaluating larval populations and by monitoring adults with pheromone traps. Three full generations and at least a partial fourth generation of the GBM occur in Missouri. Field testing established that the GBM pheromone incorporated into rubber septa was quite stable. The following treatments did not change effectiveness of such septa for collecting GBM: (1) aging in the field for 10 weeks, (2) refrigerating for 2 years and (3) fresh. Most moths were caught in traps located around the periphery of the vineyard. GBM population dynamics were asynchronous among locations suggesting monitoring programs should be tailored to specific vineyards when implementing pest management programs.