Utah State University Extension
The poplar borer is the most commonly submitted wood borer found in aspens and other poplars in Utah. While large trees are seldom killed by this pest, it can cause the decline of trees, weakening of branches or the bole (which promotes wind breakage), and allows the introduction of pathogens.
Roe, Alan H. and Roe, Alan H., "Poplar Borer" (2001). All Current Publications. Paper 1361.