Explanation of Names
Daktulosphaira vitifoliae (Fitch 1855)
Adults of different generations are winged or wingless crawlers.
The majority of grape phylloxera adults are wingless females. They can be oval or pear shaped.
probably originated in e. US. It is found on native species of Vitis
Overwinters as small nymphs on roots
Serious pest of grapevines worldwide
Two forms that either attack the root (radicicola) or the foliage (gallicola).