In viticulture, insects occur mainly as pests (picture), but there are also so-called beneficial insects that are also deliberately used against other pests. The harmful insects are conventionally controlled with insecticides. In organic viticulture, however, environmentally friendly methods are preferred, such as the confusion method or also protective walls as shown in the picture below. See also various insects under Beetles, Caterpillars and Butterflies and a complete list of all diseases and pests under Vine Enemies.
Buffalo cicada and vine borer: André Mégroz - Insects
European grapevine weevil: Thomas Lohrer
Grape berry moth: P. P. Kohlhaas - AGES Wien
Insect net © Net Team Meyer Zwimpfer AG
For me, Lexicon from wein.plus is the most comprehensive and best source of information about wine currently available.Egon Mark
Diplom-Sommelier, Weinakademiker und Weinberater, Volders (Österreich)