Hassanein and Galal (1969) and Watson et al. (1973) have shown the importance of temperature and moisture in terminating diapause of the pink bollworm,Pectinophora gossypiella(Saunders). However, nutrition has yet to be fully considered as a factor.Nutrition has been reported to influence the induction of diapause in this insect. A higher percentage of larvae in diapause was obtained from older bolls rather than in young, immature bolls (Squire 1940, Chapman and Hughes 1941). The relationship of fat content in the larval diet to incidence of diapause was observed by Vanderzant and Reiser (1956) and Bull and Adkisson (1962); larvae feeding on diets with the highest fat content had the highest percentage of diapause.