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单词	vedalia beetle
释义	vedalia beetle /vɪˈdeɪlɪə / noun An Australian ladybird which has been introduced into California and elsewhere to control scale insects. Rodolia cardinalis, family Coccinellidae. Researchers raised vedalia beetles to use in orchards that had outbreaks of cottony cushion scale.... The importation of the vedalia beetle was the beginning of the modern era of biological control. When vedalia beetles arrive in an orchard they can clean up a nasty problem in 4-6 weeks. Origin Late 19th century: modern Latin Vedalia (former genus name), of unknown origin.
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