Monochamus sartor, commonly known as the Sartor longhorn beetle, is a species of insect belonging to the family Cerambycidae. It is characterized by its elongated body, measuring around 20-30 millimeters in length, and its distinctive long antennae. The Sartor longhorn beetle is known for its striking black and white coloration, with black elytra and white markings. This species is typically found in coniferous forests, where it feeds on the bark and wood of dead or dying trees.