Organic lettuce, Lactuca sativa L., producers on California's Central Coast rely on endemic syrphid flies (Diptera: Syrphidae) to suppress populations of Nasonovia ribisnigri Mosley (Homoptera: Aphididae) and other aphids affecting lettuce. Growers are using various forms of habitat manipulation to enhance biological control. We surveyed syrphids collected from organic romaine in and around the...

Abstract Manipulating phytophagous insects with light-based repelling techniques has shown its potential to be a useful tool in integrated pest management systems the future. Underlying optical mechanisms can applied field and protected cultivation, reflecting materials or emitting light sources, such as LEDs. Many are characterised by their cryptic lifestyle avoid intervening protection measur...