Poplar Borer. Larval hosts are quaking aspen, cottonwood, and balsam poplar. Eggs are laid in the spring and summer in small notches chewed in the bark by the female. Upon hatching larvae feed on the cambium layer for the first season and later move to the sapwood and heartwood. Larvae take 3 to 4 years to develop into adults. Adult Poplar Borers feed on the leaves of the host trees. These are large beetles 20 to 30 mm long.
The Poplar Borer is a species of beetle in the family Cerambycidae. It was described by Thomas Say in 1824. It is known from Canada and the United States. It contains the varietas ''Saperda calcarata var. adspersa''.