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Common names: Rhubarb Curculio
Scientific name: Lixus concavus
Region: This weevil can be found throughout the United States.
Life cycle: This insect produces one generation each year and overwinters as an adult in weeds.
Physical Description: This Curculio is a large, 3/4 of an inch, weevil is a grayish brown, but is covered with a yellow to orange powder resembling pollen. Its eggs are laid in punctures made in the stalks of rhubarb, which produce the white larva.
Feeding characteristics: This pest bores into stalks, crowns, roots, and stems. Larvae will also feed on dock, sunflower, and similar plants.
Controls: These weevils are large enough to easily spot and handpicking is an effective control of this insect.
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