Colorado potato beetle

noun

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.
Also called Colorado beetle, potato beetle, potatobug.

Origin of Colorado potato beetle

An Americanism dating back to 1865–70

British Dictionary definitions for colorado beetle

Colorado beetle

noun

a black-and-yellow beetle, Leptinotarsa decemlineata, that is a serious pest of potatoes, feeding on the leaves: family Chrysomelidae Also called: potato beetle