Abstract
Several types of insecticide were sprayed on Vaccaria pyramidata (Charyophyllaceae) on which many adult Liriomyza huidobrensis (Blanchard) were found. The results showed that feeding and oviposition punctures made by the female flies were fewer on the plants sprayed with nereistoxins, cartap and thiocyclam. Living larvae were fewer on the plants sprayed with insect growth regulators (IGRs), cyromazine, flufenoxuron and lufenuron, followed by those sprayed with nereistoxins, emamectin benzoate and spinosad. No such effects were observed on plants sprayed with pyrethroids, organophosphates including isoxathion and chlorpyrifos, and neonicotinoids.