They're also rampant around the SF bay area; they mostly leave the native trees alone, but I'm staring at a massive dead pine tree that was healthy a few years

They're also rampant around the SF bay area; they mostly leave the native trees alone, but I'm staring at a massive dead pine tree that was healthy a few years ago. The damage in the article looks different though. Our beetles seem to focus on a ring of bark near the ground, so they don't have to eat nearly as much to kill the tree.