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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).