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Phylloxeras are tiny, 1/10 to 1/5 inch long, cream colored to pale yellow insects that resemble aphids but lack cornices. They have sucking mouthparts, which feeding stimulated the plant to produce galls on the leaves, stems, and nuts.
Phylloxera. Phylloxera are small, aphid-like pests that cause galls to develop on leaves and petioles early in the growing season. They are a common problem on pecan trees.
The grape phylloxera is a pest common in California, where it attacks roots by sucking juices from them and creating galls, and in the East, where it attacks leaves as well as roots. Galls about the size of peas form on leaf undersides.
Bunches are medium, well-filled and cylindrical, usually winged, medium-round berries with heavy, waxy bloom. Shows good resistance to downy mildew, powdery mildew, and phylloxera. Large clusters can lead to overcropping.
 See also: Plant, Produce, Rootstock, Growing, Insect
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