摘要：AbstractFicus benjaminais an important ornamental plant in many countries of the world. Recently, this plant is attacked by a lepidopteran insect pest known asTrilocha varians(Bombucidae: Lepidoptera) in Pakistan. This pest eats the leaves making the plant unaesthetic. In the current study, toxicity of four insecticides (deltamethrin, chlorantraniliprole, fipronil and emamectin benzoate) was evaluated againstT. varians. Different concentrations of these insecticides were prepared in distilled water and 3rd instar larvae were exposed using leaf dip bioassay method. The results showed that deltamethrin was more toxic toT. variansfollowed by emamectin benzoate, fipronil, and chlorantraniliprole. The LC50of deltamethrin after 12, 24, 36, 48, and 60 h were 18.04, 16.67, 5.74, 2.46, and 1.79 ppm respectively. The results will be useful for management ofT. varians.
