504 long; 2 other setae small and thin; a dark, short, blunt seta in anterior angle; 

 a brownish, moderately long seta in posterior part near curvature; a large, 

 dark, blunt seta medial and lateral to this seta. A thick, blunt, long, dark 

 seta, and 2 small, thin, hairlike setae on metanotum, lateral to spot at the 

 posterior margin; a pair of asymmetrically situated, moderately long, blunt 

 setae in the anterior part. 



(505; 



FIGURES 708-712. Hydropsyche nevaeKol.: 



708 — median spot of posterior margin of mesonotum (A), of metano- 

 tum (B); 709 - propleuron; 710 — prothoracic sternite; 711 — coxa of 

 right foreleg, anterior; 712 — claw of foreleg. 



Basal horn of trochantin (Figure 709) dark brown, narrow; apical horn 

 light brown, darker at the end; setules situated subapically; primary seta 

 situated among secondary setae near base and lateral to small horn; 

 episternum yellow, smooth, without setae; pleural suture reddish black; 

 epimeron brownish, with short, light brown, thick setae and 1 primary seta. 

 Pleural sclerites of meso- and metathorax brownish yellow, with a black 

 pleural suture and a reddish brown stripe on the trochantin. Primary seta 

 of trochantin strong, blackish brownj both setules light. 



Prothoracic sternite consisting of 3 sclerites, an anterior, transverse 

 sclerite and 2 posterior sclerites (Figure 710). 



Secondary chaetotaxy of legs rich, but less rich than in the preceding 

 species; secondary setae mainly light. Both primary, anterodorsal 



577 



