Drosophila suzukii (Matsumura) (Diptera: Drosophilidae), a new pest of stone fruitsin western North America


Abstract: The spotted wing drosophila, Drosophila suzukii (Matsumura) (Diptera: Drosophilidae)is an Asian species that was detected in California, USA in late 2008. It spread into Oregon andWashington, USA, and British Columbia, Canada, during 2009. More recently, D. suzukii wasfound in the eastern USA, Italy, and Spain. D. suzukii damages fruits including sweet cherries,brambles, and blueberries, by ovipositing into ripening fruit and by larval feeding. We report theresults of monitoring of adult populations with apple cider vinegar baited traps in 2009 and 2010,and of reported damage to crops. D. suzukii were trapped in the spring in areas with wintertemperatures below 0°C, indicating that overwintering survival is likely in some microhabitats.Cold temperature survival of D. suzukii was determined in the laboratory under six overwinteringregimes for a three month period. Survival of females at 15°C was

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