Host plant quality and male wheat stem sawfly (Hymenoptera : Cephidae) fitness

The size of male Cephus cinctus Norton (Hymenoptera: Cephidae) adults did n ot significantly increase with the size of host stems in which larvae devel oped. Larger adult male sawflies had higher longevity. There was no statist ically significant relationship between wing length and the emergence date, mating success, or dispersal from overwintering sites. The relation of hos t plant quality and sawfly fitness was less apparent for male adults than t hat which rye previously reported for females.