Question

pink stain lodgepole   Hi Jim
what is causing this pink staining and small insect holes and tunnels in this lodgepole pine?

Sincerely,
Laura G
Alberta Canada

Answer
The pink is a fungi called Arthrographis: This fungus causes a pink stain in heartwood and sapwood of pine, birch, hemlock, spruce, fir, oak, and Douglas Fir,
I would guess the beetle had the fungi spores on it when it borer into the wood. The beetles I think are European shot-hole borer, Xyleborus dispar. Here is a web link to some information on this beetle and a picture with the pink fungi. http://oregonstate.edu/dept/nurspest/xyleborus_dispar.htm