1. UC IPM
Western poplar clearwing, <i>Paranthrene robiniae,</i> pupal cast skin (lower left) and frass-covered larval tunnel entrance on a young poplar trunk.
Western poplar clearwing, Paranthrene robiniae, pupal cast skin (lower left) and frass-covered larval tunnel entrance on a young poplar trunk.
Credit: Jack Kelly Clark