Sugarbeet root aphid (Pemphigus betae) are a yield-limiting pest of sugarbeet. These insects have a two-host life cycle. That is, they spend different parts of their lifecycle on different host plants. In their case, sugarbeet root aphid sexually reproduce on cottonwood trees (Populus spp.) laying a single egg that overwinters. In the spring, a winged form of the insect migrates to sugarbeets where they reproduce asexually. We've developed a network of suction traps to monitor the migration from the alternate host to sugarbeets. The trap consists of a fan housed inside a PVC pipe that sucks flying aphids into a collection jar filled with antifreeze for preservation. Our grower cooperators collect the jars once per week and mail them to the lab where we identify and count the number of migrating aphids. We will post this information to the web throughout the growing season.