Easy method for measuring insecticide susceptibility of five lepidopteran species using artificial diet

This study assessed an easy method for measuring insecticide susceptibility of cotton ballworm, beet armyworm, common cutworm, cabbage armyworm, and cucumber moth using an artificial diet. Larvae were placed in a petri dish with a disc of artificial diet that was treated with an insecticide at the commercial concentration on the upper side. Several days later, living and dead individual larvae were counted. Larval cannibalism increased according to the larval stage and according to the type of insecticide, but measurement of the susceptibility was not difficult. These results suggest that this method is useful for measuring the susceptibility of five lepidopteran species.