Transverse groove of pronotum (Figure 289) slightly dark in middle; 

 anterior third slightly darker than other surface. 



Legs brownish, with indistinct punctation. Gills on segments 2—8. 



Tergite of segm.ent 9 with thick, moderately long, medioanal and 

 anterior-angle seta; intermediate and lateral seta thin; a moderately long 

 seta between the medioanal setae. 



Claw of anal legs with 2 or 3 dorsal denticles. 



Case to 50 mm long (Figure 2 90), made of long plant particles, usually 

 sedge leaves, arranged longitudinally in 3—4 turns of a spiral; posterior 

 end open; case not as long as inG.atomarius. 



171 



FIGURES 288-290. G ra m m ot a ul i us s i b i ri c us McL. 

 288 - head, dorsal; 289 - pronotum; 290 - larval case. 



213 



