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Colorado potato beetle

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noun
  1. a black and yellow leaf beetle, Leptinotarsa decemlineata, originally of Colorado and neighboring states but now a common pest in all potato-growing regions of the U.S.

Origin of Colorado potato beetle

An Americanism dating back to 1865–70
Also called Colorado beetle, potato beetle, potatobug.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018