Fig. 2. Effect of application of increasing hydroprene concentration during early pupal development on the phenotype of the adults. Second pupal cuticle is visible on the pronotum (white arrow) and the abdomen (black arrowhead). At higher doses, a second pupal cuticle is also visible on the head and ventral thorax (gray arrows), and the pronotum and the ventral abdomen (gray arrowheads) have mostly pupal cuticle. (Inset) Gin traps are visible on the dorsal side (black arrow).