The grape berry moth, a major pest of cultivated grapes, is native to eastern North America where it originally occurred on wild grapes. Its present range of distribution is the territory east of the Rocky Mountains, ...

Eutypa dieback of grapevines, formerly called “dead arm,” was for many years thought to be caused by the fungus Phomopsis viticola. Recently, however, another fungus, Eutypa armeniacae (imperfect stage: Cytosporina), was ...