June 4th is when we first discovered these worms on our evergreen trees. They seem to be attracted to the scotch and white pines. They are destroying them by eating all of the needles. Can you tell me what these worms are and how we can get rid of them? Unfortunately we live in a pine forest so they are doing quite a lot of damage to our forest. Here are some photos of the trees that they have destroyed and a video/photo of them worms. I tried to upload a video but it was too large to send.