IntroductionEnvironmental contamination by polycyclic aromatic hydrocarbons (PAHs) has increased in recent decades, intensifying the exposure of organisms in wetland ecosystems. Anthracene, due to its chemical stability and persistence, represents a potential risk to herbivorous insects associated with aquatic vegetation.MethodsThe toxicity of anthracene to the semi-aquatic grasshopper Cornops aquaticum (Bruner, 1906) was experimentally evaluated under controlled laboratory conditions using Eich