Definition of plant louse in English:

plant louse

Line breaks: plant louse

noun

A small bug that infests plants and feeds on the sap or tender shoots, especially an aphid.
More example sentences
  • But then the plant louse called phylloxera hit most of Europe and ruined the vineyard, which lay fallow for decades.
  • While growing succeeded there for decades, a plague of the plant louse phylloxera, followed by Prohibition and then the Depression, set the region back for years.
  • Aphids, or plant lice, are small green, pink, or mealy-white insects that attack many plants.

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