(2i5; 



FIGURES 181-191. Rhyacophila se p t e n t rio ni s McL.: 



181 - head.prothorax and part of mesothorax, lateral; 182 - head, dorsal (A) and lateral (B); 183 - labrum, 

 dorsal (A) and ventral (B); 184 - mandibles: left mandible, dorsal (A) and outer (B), right mandible, dorsal 

 (C); 185 - maxillolabium and gula; 186 - pronotum, dorsal ; 187 - pronotum, lateral, pleuron of prothorax, 

 base of coxa of foreleg; 188 - pleuron of metathorax, base of coxa of hind leg; 189 - legs: posterior view 

 of foreleg (A) and hind leg (B); 190 - trochanter and femur of foreleg, ventral; 191 - claw of foreleg of 

 lst-stage larva (A) and of 5th-stage larva (B) (181 - after Hickin, 182-191 - after Nielsen). 



223 



