Life … Animals Arthropods Insects True Bugs, Hoppers, Aphids, and Allies Aphids Poplar Leaf-stem Gall Aphids Pemphigus knowltoni species 2 observations Pemphigus knowltoni Pemphigus knowltoni Supported by All 1 native plantssupport it in the US Food plants Plants it feeds on Balsam Poplar 1 Close
