Source: Iowa State University
Imported longhorned weevils have been regularly collected in sweep net samples from soybean this year in Iowa. A few reports of weevil damage in soybean are reported in Iowa annually since 1994. Damage is most likely to occur on border rows adjacent to grassy areas.
Imported longhorned weevil adults are about 1/4 inch long with a grey, pear-shaped body. The forewings are covered with irregular tan markings and white scales. The antennae are long, prominent and elbowed. Adult weevils emerge from the soil in late June and become abundant during July and August. The adults are defoliators that create jagged leaf edges. Larvae are C-shaped and legless; they are root feeders with a wide host range.