Biology Face flies feed on the secretions of the eyes and nose for short periods of time; only a small percentage of the local face fly population may be found on animals at any one time. These aspects of its life history make management of face fly a very difficult task. Hence, many of the products labeled for efficacious horn fly control indicate that they merely aid in face fly control.
Pest description and crop damage Sod webworm are larval caterpillars that are 0.5 to 0.75 inch in length and feed on turfgrass foliage. Sod webworm are light green or yellow with dark patches across the back and sides, and a dark brown head.
