A common caterpillar we include in our ISU field guides is hop vine borer (Figure 1), but I can’t even remember the last time I saw one. I’m wondering if it’s an early-season pest of the past? Archived ICM News articles tell me it was most commonly observed in northeastern Iowa and states to the east. It was considered an occasional pest that caused stand loss in corn, particularly in fields with grassy weeds. Have you seen it lately?
Iowa State University
Hodgson, Erin W., "A Pest of the Past: Have You Seen Hop Vine Borer?" (2017). Integrated Crop Management News. 2426.
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