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The small, whitish insects (Heliococcus bohemicus) are among the scale insects, They usually attack during the sprouting Plant leaves and sucking plant juice. They divorce wax in the form of powder or threads and leave behind the eponymous sticky honeydew (Excrement) Scroll and also grapes, They are also carriers of virus, The species Pseudococcus, Planococcus and Pulvinaria transmit the Grapevine leafroll associated virus (GLRaV), which causes the Leaf roll disease caused. Natural enemies are parasitic wasps and ladybug in the Organic viticulture deliberately bred and exposed to combat. Become conventional pesticides used. See also below Vine enemies,

Vine lubrication - lice on vine leaf stem and louse on milkweed

Picture left: JKI (Julius Kühn-Institut) - Wolf Englert
Picture right: By Frank Vincentz - Own work, CC BY-SA 3.0 , Link

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