The larvae are borers that live in galleries they create in the trunks and stems of poplar trees, where they feed on the cambium area. Mature larvae are 4-5 cm long, creamy white with brown spots at the base of the setae, and dark brown heads and thoracic shields. Little is known about the life cycle, but the closely related Carpenterworm takes up to three or four years to complete the life cycle, and it is probable that the Poplar Carpenterwom also takes several years to mature. The adults come to light. Larvae are occasionally been found when splitting aspen logs for firewood. Their boring can weaken trees, making them more vulnerable to wind damage and drought, but they are not abundant enough to be a serious problem.