Poplar Petiole Gall, Pemphigus populicaulis

	Poplar Petiole Gall Pemphigus populicaulis San Joaquin Wildlife Sanctuary, Orange County, CA. 7/19/09. © © 2009 Elliotte Rusty Harold Hemiptera: Aphididae Back to Hemiptera index page Back to Arthropods of Orange County, California Back to Natural History of Orange County, California