completely than the sclerites of the other two segments. Posterior margin 

 of sclerite separated from the other part of the sclerite by a ridge, blackish 

 brown; posterior angles and sides black posteriorly; greater part of 

 sclerite dark brown, with minute light spots; buff yellow anteriorly; anterior 

 margin of sclerite with a narrow dark border; the light area in the anterior 

 part of meso- and metathorax extends farther posteriorly than on the pro- 

 notum; posterior margin of the sclerites blackish brown, with light spots. 



(333) 



FIGURES 416-418. Hydroptila fe m ora li s Eat. (after Nielsen): 



416 - prothorax, do. sal (A), lateral (B) and ventral (C); 417 - right legs, 

 posterior view: foreleg (A).midleg (B),hind leg (C); 418 - distal process 

 of tibia of right foreleg (anterior view). 



Anterior margin of pronotum (Figure 416) with 3 dark long secondary 

 setae in each half; between them short, yellow, curved setae and small 



367 



