Braconid wasps (Braconidae) are one of the most important pest parasitoids. The function of parasitoids can be affected by the use of insecticides. In order to use biological control agents and pesticides simultaneously in pest management, it is necessary to know the effect of pesticides on biological control agents. In this study, the lethal and sub lethal effects of the flubendiamide, emamectin benzoate+lufenuron, thiocyclam and spinosad on the parasitoid Habrobracon hebetor</em> (Say) (Hymenoptera: Braconidae) were investigated. The LC50</sub> of spinosad on parasitoid wasps were 1.25 mg/L of active ingredient, which showed that this insecticide is the most toxic compound on this insect and LC50</sub> of thiocyclam, emamectin benzoate+lufenuron and flubendiamide were 19.99, 7.56 and 6.45 mg/L of active ingredient respectively, which were more toxic to this wasp, respectively. The results of bioassays on adult insects of parasitoid wasps showed that spinosad with LC30</sub> was 0.71 mg /L of active ingredient with high toxicity on adult insects compared to flubendiamide, emamectin benzoate+lufenuron and thiocyclam, which were LC30</sub>, 3.67, 4.26 and 14.44 respectively. According to the classification of the International Organization for Biological Control, spinosad was in the group of harmful insecticides and emamtectin benzoate + lufenuron and flubendiamide were in the group of moderately harmful insecticides. According to this classification, thiocyclam was classified as harmless insecticide on bracon wasp.
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