Host Plant Quality and Male Wheat Stem Sawfly (Hymenoptera: Cephidae) Fitness

The size of male Cephus cinctus Norton (Hymenoptera: Cephidae) adults did not significantly increase with the size of host stems in which larvae developed. Larger adult male sawflies had higher longevity. There was no statistically significant relationship between wing length and the emergence date, mating success, or dispersal from overwintering sites. The relation of host plant quality and sawfly fitness was less apparent for male adults than that which we previously reported for females.