wood eating something

Asked June 10, 2017, 3:20 PM EDT

we just discovered what appear to be wood eating in the patio roof of a home we purchased last year. They have eaten a good part of a beam. The house was wood and then siding was over the wood. We cannot see much more re damage right now. Can you help with identifying this bug and any other suggestions would be most appreciated. We called 4 pest control companies, but since it is Saturday afternoon, no return calls until next week and then put on the schedule... anyway, I think it has 4 wings, and three parts to its body, is black or brown and the wings seem a bit yellowish/tannish. thank you for any help you can give us.

Jefferson County Pennsylvania

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