Toxicity of Acetamiprid to Workers of Reticulitermes flaviceps (Isoptera: Rhinotermitidae), Coptotermes formosanus (Isoptera: Rhinotermitidae) and Odontotermes formosanus (Isoptera: Termitidae)

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The toxicity of acetamiprid was tested on Reticulitermes flaviceps (Oshima), Coptotermes formosanus Shiraki and Odontotermes formosanus (Shiraki), important pests in buildings, dams and trees in China. The LD₅₀ value of acetamiprid among worker termites of the three species was 4.41×10⁻⁵, 13.8×10⁻⁵ and 146×10⁻⁵ μg/termite, respectively, at 72 hr post-treatment. More than 90% of individuals tested died within 120 hr of coming into contact with sandy soil containing 4.8 ppm of acetamiprid. A 10-cm thick barrier of loam treated with 8.0 ppm of acetamiprid retarded completely the penetration by C. formosanus and O. formosanus. © Pesticide Science Society of Japan