many galls caused by phylloxera, viteus vitifoliae, look like parasites

agriculture america animal animals aphid aphids ball caused closeup dactylosphaera daktulosphaira damage detail disease europe fauna format fretter fretters gall galls grape grapevines green horizontal illness infestatiuon infested insect insecta insects invertebrata invertebrate leaf leaves like nature north phylloxera problem sternorrhyncha vastatrix vermins vine viteus viticulture vitifoliae vitifolii wine