Noticed here in southern New Hampshire (Merrimack) and I have never seen anything like it…. Any ideas?
Totally awesome photograph of a White-spotted Sawyer, Monochamus scutellatus. These large Long-horned Borer Beetles, Family Cerambycidae, are black with a bronze sheen and white markings. The males have extremely long antennae, like your specimen. They attack felled or dead pine trees. Because the larvae make a buzzing sound, they are called “Sawyers”. Though they usually feed on freshly cut logs, they may attack living trees.