The size of the adult wasps emerging from each treatment was
estimated from the measurement of wing length. A statistically
significant interaction across host strains (F = 28.35; df = 1,166;
P < 0.001), diet (F = 30.84; df = 1,166; P < 0.001) and between strain
and diet was observed (F = 14; df = 1,166; P < 0.001). An average
wing length of 2.1 mm was observed for both strains grown on
corn and for the corn-strain reared on stargrass. This contrasts with
a wing length of 1.7 mm for adult wasps emerging from rice-strain
larvae grown on stargrass