August, 1944 



Ross: Caddis Flies of Illinois 



33 



127 A 



LEDRA 



I27C 



Figs. 120-127.— Rhyacophiia, male genitalia. J, lateral aspect; B, dorsal aspect; C, 

 aedeagus, lateral aspect; D, aedeagus, dorsal aspect. 



