Answer: Based on your description, it sounds like it might well be a chestnut weevil problem. Take a look at the following web site http://www.uky.edu/Agriculture/Entomology/entfacts/fruit/ef2... for more in-depth information and photographs of this pest. Your local agent should be able to provide the most up-to-date chemical control recommendations for your area, but according to the University of Kentucky, Sevin is registered as a control for this pest. Be sure to follow the label instructions carefully as timing is important. Picking up infested nuts is also extremely helpful in interrupting the life cycle of this pest -- it is important to do it for several years in a row or even every year as they live for more than one season. I hope this helps.
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