Toxicological and histopathological effects of hydramethylnon on Atta sexdens rubropilosa (Hymenoptera: Formicidae) workers

► The results of the toxicity bioassays confirmed the activity of delayed hydramethylnone. ► The death rate of ants varies depending on whether the hydramethylnone is associated with the oil or not. ► Hydramethylnone acts differently in the organs analyzed. The role of post-pharyngeal glands in the metabolism of lipids is not yet fully understood.