Phylloxera | insect genus | Britannica
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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.