Attack of the beetles

While walking down the stairs at night, I had a rather unpleasant surprise when I felt something moving on the railing. I turned on the lights and saw a nice little hole bored into the railing, with two long antennae sticking out.

In the morning, there were several more holes, each with a confused looking beetle sticking his head out.

The railing itself is painted solid white and has been undisturbed for at least three years.

Weird.