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phylloxera
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Grape phylloxera
phylloxeran
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phylloxera

insect genus
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Britannica Editors
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
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phylloxera, Any of numerous, chiefly North American, insect species (genus Phylloxera, order Homoptera), many of which are serious pests of plants. Phylloxera form galls on and can defoliate trees, especially hickory and pecan. See also grape phylloxera.

This article was most recently revised and updated by John P. Rafferty.