Phylloxera spp.
Pest description and damage Phylloxerids are very small (0.01 to 0.02 inch) aphid-like insects that lack cornicles. They are usually spiny in appearance and found in clusters. Winged forms have reduced wing venation. They attack the foliage and buds of red and white oak trees of all sizes. Buds and young developing leaves (undersurface) on terminals and branch ends are attacked, causing bright yellow spots and leaf distortion.
