Distribution
As the name suggests, the primary host is ''Prunus padus'', the Bird cherry tree where ''R. padi'' overwinters as eggs in Europe. In Northern America, it is found to overwinter on ''Prunus virginiana'' . At spring, it attacks all major cereals and pasture grasses and particularly barley, oats and wheat and other Gramineae members. It can also be found in maize. It has a worldwide distribution.Behavior
It is the principal vector of many viruses including the barley yellow dwarf virus, the Cereal yellow dwarf virus–RPV, Filaree red leaf virus, Maize leaf fleck virus, and Rice giallume virus, as well as oat yellow leaf disease and the Onion yellow dwarf virus.References:
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