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This most dangerous of all vine pests (bot. Dactylosphaera vitifolii) is an insect of the order aphids (Homoptera), subordination Aphids (Aphidina) and family of dwarf lice (Phylloxeridae). Phylloxera affects only the Vine , sucking on the leaves or roots, and stressed their saliva into the juice railways from what Gall (growths) causes, which then serve as nesting and food. Due to different behavior patterns opposite the Vine types are suspected. The German biologist Dr. Carl Carl Börner (1880-1953) worked intensively with the insect and distinction between a less dangerous langrüssligen and...You see a shortened form of description. The full description is reserved for our subscribers.