Duplicate of this question.
I found bugs in wood that I've had air drying for the last few years. What are they?
I had a tree cut down a few years ago and some of the wood milled in to slabs. However, I've found a few pieces that appear to have bugs living in it. They seem to be some kind of larva.
The larva seem to be approximately 2cm long and maybe 1-2mm across. There have also been larger tunnels from what I assume is the adult insect that are more like 3-4 mm across. I haven't found any adult insects to get pictures of though.
Tunnels are usually packed with sawdust, but sometimes the bigger tunnels are packed with what looks more like leaves.
The picture below is of a piece of oak, but I've seen similar tunnels in some maple also.
Current searching online leads me to the Emerald Ash Borer (but it seems to only eat Ash trees?) or termites (but the larvae size doesn't seem to quite match).
I'd like to identify the insects so I can evaluate whether I can use the wood.
This is in Eastern Missouri (USA).