What type of insect damage?

Anyone have any idea what type of damage this is in the skip sheathing? The small holes suggest it would be insect, but I just wasn’t sure what it might be. No other evidence in the surrounding areas.

I dont see any mud tubes any more pics

Matt, going on your comment of “small holes”… possibly anobiid beetles, or other wood borers.

It looks like a type of rot fungus that attacks the sapwood (soft outer portion) of a log, then shows up in utility grade lumber. Not a major threat, not insect related, IMO.

John Kogel

Without more info, or additional pics I would have to agree. Must be that Douglas Fir from the Coast Range.

It doesn’t appear to be insect damage to me.