Brown Ambrosia Aphid, Uroleucon rudbeckiae

	Brown Ambrosia Aphid Uroleucon rudbeckiae Hemiptera: Aphididae On Mulefat (Baccharis salicifolia) at San Joaquin Freshwater Marsh, Irvine, Orange County, CA. 11/18/06 © Peter J. Bryant. Species identified by Nick Nisson, County Entomologist, Orange County Back to Hemiptera index page Back to Natural History of Orange County, California

Those below identified only to genus Uroleucon
Fullerton Arboretum, Fullerton, Orange County, CA. 11-18-05. © Ron Hemberger	Fullerton Arboretum, Fullerton, Orange County, CA. 11-18-05. © Ron Hemberger
Fullerton Arboretum, Fullerton, Orange County, CA. 11-18-05. © Ron Hemberger	On Parthenium hysterophorus, San Diego Creek Channel, nr. Audubon Hdqtrs., 7-9-17. © Ron Vanderhoff.