All four populations were susceptible to fenvalerate and deltamathrin, It indicated that pyrethroids had a high toxicity to H. graminicola than organophosphates.

• 4个种群对溴氰菊酯和氰戊菊酯均未产生抗药性，说明拟除虫菊酯类杀虫剂对草间钻头蛛的毒力要大于有机磷类杀虫剂。