ジアミド系殺虫剤に対するマメシンクイガ （チョウ目：ハマキガ科）の感受性低下の.

We examined the susceptibility of two populations of soybean pod borer, Leguminivora glycinivorella Matsumura（Lepidoptera: Tortricidae ）, in Tottori Prefecture to five insecticides: diamides （chlorantraniliprole and flubendiamide）, organic phosphorus（MEP）, synthetic pyrethroid（etofenprox）, and neonicotinoid（acetamiprid）. For both populations, we detected decreasing susceptibility to diamides and synthetic pyrethroid, and organic phosphorus and neonicotinoid were highly toxic. Soybean farmers in Tottori Prefecture use chlorantraniliprole and etofenprox, but not flubendiamide, for pest control, suggesting that cross-resistance may develop between chlorantraniliprole and flubendiamide. To manage diamide resistance in the soybean pod borer in the future, pest management systems should be updated or improved. [ABSTRACT FROM AUTHOR]