THE INFLUENCE OF THE HOST ON OVIPOSITION BY THE WHEAT STEM SAWFLY, CEPHUS CINCTUS NORT. (HYMENOPTERA: CEPHIDAE)

Abstract

Differences in host development largely determined the relative times, amounts, and locations of oviposition by the wheat stem sawfly in various hosts studied under field conditions. The difference in rates of development of varieties was the main cause of differences in infestations of the varieties. Resistance to oviposition was not a factor in the sawfly resistance of any of the test varieties.