Mass-reared female moths of the Phoenix PPD strain ofPectinophora gossypiella(Saunders), irradiated with doses of up to 40 krad were assessed for attractiveness in field traps, mating ability, and longevity. The data indicated that females irradiated with 10 or 25 krad were fully as attractive to native males as unirradiated females in the field. Hexalure (25 mg/trap) was more attractive to native males than 1–5 virgin females in the field. Although females irradiated with a sterilizing dose of 30 krad mated as frequently as unirradiated females, a significant reduction (30%) in their ability to receive sperm in their spermathecae occurred in single matings to unirradiated males. The longevity of males and females irradiated with 10 or 25 krad was not significantly different from unirradiated moths. The average LT50and LT90values for females held at 30°C were 20 and 24 days, respectively.