grape phylloxera

noun
variants: or grape louse

Definition of grape phylloxera

: a small yellowish green North American phylloxera (Phylloxera vitifoliae) that lives and forms galls on the leaves and roots of various grapes being relatively harmless to native forms but extremely destructive to European vinifera grapes

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Cite this Entry

“Grape phylloxera.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/grape%20phylloxera. Accessed 29 Nov. 2020.

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