EXPERIMENTAL STARVATION OF FIRST-INSTAR LARVAE OF THE PALE WESTERN CUTWORM, AGROTIS ORTHOGONIA MORR.

Abstract

The pale western cutworm, Agrotis orthogonia Morr, has been a serious pest in the semi-arid prairies of Western Canada since 1911. Only recently, however, has an effective control been developed which can be used in the spring of the year of outbreak. Seamans (1938), after many years of field observations, published a non-technical bulletin dealing with a method of control by starving the small cutworms early in the spring.