Vines of the genus Vitis are the native host of the grape berry moth, Endopiza viteana Clemens (Lepidoptera: Tortricidae) and are found in unmanaged habitats throughout eastern North America. In a two-year study, the relative abundance of grape berry moths and the level of infestation of E. viteana were compared in vineyards bordered by four types of adjacent habitat; grasses, tree rows, coniferous woods, and deciduous woods. Pheromone traps were placed at the edge and 30 m inside vineyards, and on the edge and 30 m inside habitats adjacent to these vineyards. Cluster infestation by E. viteana was determined in July, August and September by sampling 100 clusters near to each pheromone trap. Presence of wild grape was assessed in each adjacent habitat, and infestation of wild grape by E. viteana was also recorded. There were significant differences between habitats in the abundance of wild grapevines and whether they yielded fruit. Infestation of vineyard borders was best predicted by the abundance of fruiting Vitis vines in the adjacent habitat. The implications of this study for managing grape berry moth through habitat manipulation will be discussed.
Species 1: Lepidoptera Tortricidae Endopiza viteana (grape berry moth)
Keywords: Vitis
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