If I found a worm track or borer hole in a piece of hickory, I wouldn't use it for anything bow or arrow related. The infestation of bugs into whitewood speaks to me of how it was (mis)treated, even otherwise, beyond the bugs... bug damage may be the least of our concerns. I've successfully taken good care of piles of whitewood, its not difficult, and when done so, no bugs will reside there, and none of the effects of such mistreatment need dealt with, or worried about. That said, there needn't be obvious, visible damage to the wood for critical or even fatal degradation to be present. That's why I only use whitewood that I've personally chaperoned to the best of my ability through the drying process. Maybe I have trust issues, lol, but I know every stick of my wood is Grade A prime and good to go. Any adverse issues to the bows I make with it will be 100% my fault in design or construction. I prefer those odds, and that accountability.