Insecticidal activities of insect growth regulators against the larvae of Tyrophagus similis

We established a simple method to examine the insecticidal activities of agrochemicals against the larvae of Tyrophagus similis so that we could test five insect growth regulators (IGRs). Flufenoxuron emulsifiable concentrate (E.C.), registered for this species on spinach, and etoxazole wettable powder (W.P.) led to high mortality rates with our method. On the other hand, the activities of chlorfluazuron E. C., teflubenzuron E. C., and hexythiazox W. P. led to low mortality rates. IGR is one of the effective options to control T. similis.