This is the only aphid that reproduces to any extent in North American soybean. It was first discovered in Wisconsin in 2000, but was found throughout the vast majority of soybean-growing areas by 2004. In this photograph, ants are enjoying the honeydew produced by the aphids. This sugary honeydew can become moldy giving plants a black, sooty appearance in heavily infested fields. These insects are prolific, being capable of reproducing without mating and actually being "born" as live, pregant aphids during the summer months.