Petiole Gall Aphids


Petiole Gall   Petiole Galls Herbert A. "Joe" Pase III, Texas Forest Service,                              Minnesota Department of Natural Resources Archives
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TYPE
HOSTS
DESCRIPTION
Petiole-Gall Poplars, cottonwoods Round hollow galls form on leaf petioles. Infested leaves may drop prematurely in late summer. They are not a serious problem on Populus spp. and control is not necessary for these species.


Missoula County Extension Office - Missoula, MT 59808 - Updated for 2006