Monochamus sutor, commonly known as the European sawyer beetle, is a species of longhorn beetle found in Europe. It is characterized by its elongated body, measuring around 15-25 millimeters in length, and its distinctive long antennae. The adults are black or dark brown in color with yellowish markings, while the larvae bore into the wood of various coniferous trees. This insect is considered a pest in forestry, as it can cause damage to timber by tunneling through the wood.