In the present study, the effect of the sub-lethal dose of chromafenozide (non-steroidal ecdysone agonist) was studied on the morphology of the midgut, using scanning electron microscopy. The sub-lethal dose of the compound caused severe damage in the muscular layer of midgut. In the outer surface of midgut, longitudinal muscle showed only few notable changes than the circular one, with respect to the time of application. After treatment, the inner surface of midgut exhibited significant changes in the cytoplasmic protrusions. The ultra-morphological features of midgut, with the morphometric measurements exhibited significant reduction in the width of longitudinal muscle bundles. Scanning Electron Microscopic images revealed the intensity in the level of degradation and damage caused to the mid gut surface areas, when treated with chromafenozide.
