any of several plant lice of the genus Phylloxera, especially P. vitifoliae(grape phylloxera), which attacks the leaves and roots of grapevines.
Origin: 1865–70; < Neo-Latin (1834) < Greek phyllo-phyllo- + xērá, feminine of xērós dry; so named in reference to the dessication of leaves caused by some species
any homopterous insect of the genus Phylloxera, such as P. vitifolia (or Viteus vitifolii) (vine phylloxera), typically feeding on plant juices, esp of vines: family Phylloxeridae