(order Hemiptera, suborder Homoptera)
Small family of homopterans, related to Aphididae. Many species feed on Quercus species (oaks), but the best known is the vine phylloxera, which almost destroyed the European wine industry in the late 19th century. It was defeated by grafting European vines on to stocks of an American species whose roots were not affected by a subterranean stage in the insect's life cycle. Vine infestation remains a constant risk, however.
http://cas.umkc.edu/philosophy/gale/proofs.pdf Story of the Phylloxeridae infestation and its control.
Subjects: Zoology and Animal Sciences.