1. UC IPM
Bark swellings, wounds, and frass on a white poplar trunk infested with larvae of the western poplar clearwing, <i>Paranthrene robiniae,</i> and carpenterworm, <i>Prionoxystus robiniae.</i>.
Bark swellings, wounds, and frass on a white poplar trunk infested with larvae of the western poplar clearwing, Paranthrene robiniae, and carpenterworm, Prionoxystus robiniae..
Credit: John F. Karlik