Sod webworm caught in the act

We received a difficult to diagnose sample recently that had us confused for a period of time. The superintendent claimed that there were small worms in areas where ryegrass was declining. In addition, the areas seemed to recover more rapidly following application of insecticides. When the samples were observed in the lab, we could not find any trace of insects that caused the damage, that is until a large two square foot sample of sod arrived. We were able to…