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The beet webworm, Loxostege sticticalis (L.) (Lepidoptera: Crambidae), is an important insect pest that infests crops such as sugar beet, maize, and potato in Asia, Europe, and North America. The ovary grade is a reliable factor that can be used to forecast L. sticticalis outbreaks. However, forecasting outbreaks by dissecting female ovaries is tedious and generally impractical. Better methods for...
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