Survival of Different Life Stages of the Southern Chinch Bug (Hemiptera: Lygaeidae) Following Insecticidal Applications

Survival of different life stages of the southern chinch bug, Blissus insularis Barber, was measured after insecticidal applications of acephate, chlorpyrifos, and lambda-cyhalothrin. Adults and nymphs, but not eggs, were killed with all three insecticides sprayed at recommended field rates. Even when sprigs of St. Augustinegrass, Stenotaphrum secundatum (Walt.) Kuntze, were sprayed to runoff (drench), eggs were not killed. In topical treatments, only chlorpyrifos killed eggs when the insecticides were applied directly to the eggs.