Relative toxicity of pyrethroid and non-pyrethroid insecticides against male and female tea mosquito bug, Helopeltis theivora Waterhouse (Darjeeling strain)

Abstract

Variation in relative toxicity of different insecticides was observed between male and female Helopeltis theivora (Darjeeling strain). Female was more susceptible to different insecticides than male. Cypermethrin was effective amongst synthetic pyrethroids. All the non-pyrethroids were least effective than pyrethroids except thiomethoxam.