Bladdernut Slut Sawfly

Bladdernut Slug Sawfly Conundrum

I've observed sawfly larvae skeletonizing leaves on the same American bladdernut trees southwest Ohio in 2015, 2017, and again late last week. I've concluded they must cause little harm to the overall health of their bladdernut host because the trees continue to flourish despite providing some great photo ops of sawfly damage over the years!
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Authors
Joe Boggs