Mimosa webworm was not apparent in southern Illinois, Tennessee, and northern Alabama or Mississippi on the first weekend of June, but hatching should occur at any time. Don Orton’s book, Coincide, lists the bloom of elderberry as occurring at egg hatch, and this plant is in bloom in southern Illinois. It will probably be a week before larvae occur in northern Illinois, but be watchful in the southern two-thirds of the state. With our mild winter, heavy populations this summer are very possible.