154 ILLINOIS BIOLOGICAL MONOGRAPHS [154 



EXPLANATION OF PLATE 

 Setal Maps. 



Figs. 35, 36, 27, 38. Atteva aurea, Yponomeutidae. Prothorax, mesothorax, fourth 



and ninth abdominal segments respectively. 

 Figs. 39, 40, 41, 42. Cydia pomonella, Tortricidae. Same segments. 

 Figs. 43, 44, 45, 46. ' Psorosina (Canarsia) hammondi, Phycitinae, Pyralididae. 



Same segments. 



