“…Although this species showed a lowered susceptibility to BHC and chlordane, it was susceptible to DDT. Kruse and associates (2) reported possible DDT resistance in A. quadrimaculatus in the lakes of the Tennessee Valley Authority area, but subsequent studies (S) indicated this presumed resistance was due to other causes. Hawkins and associates (4) stated that DDT was still the insecticide of choice in the area, after 13 years of larvicidal applications.…”