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cottony-cushion scale

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cottony-cushion scale

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Cottony-cushion scales (Icerya purchasi, magnified)
(credit: Robert C. Hermes—The National Audubon Society Collection/Photo Researchers)
Scale insect (Icerya purchasi, order Homoptera) that is a pest especially of California citrus trees. The adult lays bright red eggs in a distinctive large white mass that juts out from a twig. Distributed worldwide, cottony-cushion scale is found on many other plants, including acacia, pittosporum, and willow. Australian ladybird beetles (see ladybug), a natural enemy, have been imported to keep it from destroying the California citrus industry.



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