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Background and Aims: Grape phylloxera, Daktulosphaira vitifoliae (Fitch), is a significant insect pest of grapevines and can cause mild to severe economic damage to ungrafted European grapevine, Vitis vinifera L., depending on the insect clonal type. Dry heat treatment is currently recommended as a disinfestation method to restrict the spread of phylloxera to uninfested vineyards on viticultural...