I was splitting up some ash and willow that I bought last week. The guy cut it down this summer, and a fair bit of the willow is already getting punky on the big (20-30") rounds. After splitting one piece, it was full of what must be little red worms. No discernible features since they were so tiny, slightly thicker than a piece of thread and perhaps 1/4" long. What are they? and the fact that the wood is rotting (or was rotting and thats why it fell) makes me wonder if it'll be burnable next winter.