Screening trials were conducted in commercial fields of bluegrass grown for seed to identify a sex attractant for the cutworm pest,Protagrotis obscuraBarnes and McDunnough. Only Z11-16:A1 produced significant trap captures. Attempts to increase trap captures by addition of electroantennogram-active compounds were unsuccessful. When the dosage of Z11-16:Al was raised from 0.01 to 3.0 mg per trap, the 1-mg bait produced the highest catches.