Fuller rose beetles are a primarily a problem because they lay eggs under the calyx of fruit and those fruit can be rejected when exported, because some export countries don't want this pest to establish in their region. Fuller rose beetle can also cause significant leaf damage to newly topworked orchards. We have been sampling an orchard near Lindcove and, while a few beetles emerge year round, we are seeing heavier numbers emerging as of the first week of August. You can find Fuller rose beetles first by looking for notched leaves (edges chewed) and frass (insect feces), then look for the adult beetles inside curled leaves. They love new flush and leaves rolled by leafminer damage. They tend to be on the lowest branches of the tree. You can also survey for them by putting a beating sheet or tray under the trees and shaking the adults out onto the tray.
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