interrupted near the median suture; this stripe is absent in dark specimens; 

 large lateral dots indistinct and light. Anterior margin narrow, brown; 

 lateral margin broad, black; posterior margin brownish and serrated. 

 Anterior-angle seta dark brown, moderately long; 2 thin, small, hairlike 

 secondary setae, and 2 long, dark, blunt setae on the outer side, near this 

 seta. Medioanal seta brownish, strong, moderately long; a thin, light, small, 

 asymmetrically situated seta in the anterior 3rd on each side of the suture; 

 a row of 3 similar setae in anterior part; 1 seta situated in lateral part. 



(504) 



FIGURES 705-707. Hydropsyche nevaeKol.: 



705 — labrum, dorsal; 706 — mandibles, dorsal: left mandible (A), 

 right mandible (B); 707 - anterior margin of head, ventral, gula and 

 submentum. 



Meso- and metanotum yellow; oblique, dotted stripe in anterior angle 

 brownish and dark; dots grayish brown; anterior margin brown, narrowly 

 black laterally; lateral margin completely black. Medioanal spot of meso- 

 notum (Figure 708, A) with a deep rectangular indentation; stripes of small 

 arcs narrow, brownish; indistinct and light dots situated in indentation; 

 medioanal spot of metanotum (Figure 708, B) small, crenulate anteriorly; 

 Medioanal seta of 3 setae of anterior part of mesonotum brown, moderately 



576 



