A new aphid pest has appeared in several Midwestern states. Initial identifications and reports suggested that this insect was the cotton aphid (also known as the melon aphid) but it has now been positively identified as the soybean aphid, Aphis glycines. The aphid is native to southeastern and eastern Asia and may have been in the U. S. during the past couple of years. This year it has been confirmed in eastern Minnesota, Wisconsin, northern Illinois, and Michigan. As of August 17, there were no reports of soybean aphids in Iowa but if it does occur here, it is most likely to be found in the northeastern and eastern counties.
Iowa State University
Rice, Marlin E., "Soybean aphid invades Midwest" (2001). Integrated Crop Management News. 2088.
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