Tarsus straight, slightly narrower apically, without punctation; apical 

 dorsal seta black, long, one of longest of leg; subapical seta thin, dark, 

 moderately long, smaller than apical dor sal seta of tibia; both ventral setae 

 thin, large, dark, posterior slightly longer than anterior. Claw thin, slightly 

 curved, with thick, pointed, basal spine. 



Hind legs differing from the midlegs as follows: l) primary, dorsal setae 

 of coxa of about the same size, longer than on midlegs 9; 2) secondary setae 

 of coxa more numerous, dorsal setae, including several large setae, as large 

 as primary setae; 3) posterior seta of trochanter large, about as long as 

 posterior distoventral seta, but thinner; 4) posterior seta of femur longer 

 than on the midlegs and almost as long as distodorsal setae; 5) primary 

 ventral setae of femur situated close together in distal part, apical seta 

 almost as long as posterior seta, second ventral seta much shorter; 

 6) dorsal subapical seta of tarsus moderately long, black, apical seta 

 short, thin, brownish (Figure 281, C). 



Dorsal process of abdominal segment 1 conical, pointed, directed 

 posteriorly; lateral processes wide, with flat, slightly sclerotized grayish 

 apex; setae situated on sclerotized dots, as on tergites of the metathorax, 

 black, short, or moderately long; anterior -margin group consisting of 

 3 setae together with primary seta; group of posterior surface setae 

 including a moderately long, medioanal seta which is thicker than others, 

 and 2—3 small, secondary setae; anterior -angle group with 4— 5 than the others, 

 with short, thin, primary seta. Ventral elliptical area with lateral groups 

 of 5—7 thin, short, and small setae situated on small whitish areas. 



Lateral line on segments 3—8; hairs short, golden brown; each side with 

 2—3 or 4—6 small, pinkish, sclerotized dots dorsal to hairs on segments 

 4—8. Gills on segments 2—8. 



Sclerite of segment 9 brownish with 2 rows of small pinkish dots near 

 anterior margin and 2—3 dots posteriorly; setae black; medioanal seta 

 long, thick, anterior -angle seta almost the same, intermediate and lateral 

 seta thin, short, latter smaller than former (Figure 282). 



Sclerite "b" of anal legs yellowish brown; distal margin with 

 a narrow, reddish brown stripe laterally and ventrally. Setae black; 

 a long, thick, dorsal seta in medioanal angle; a similar, large seta, 

 and a third one, shorter and thinner than first two, laterally and 

 distally; a thin, moderately long seta at median margin, and 2 small, thin 

 setae slightly submarginally; surface with 2—3 small, thin setae in the 

 punctate area. Sclerite "c" light, whitish brown, with broad, black, lateral 

 margin; seta situated basally, short, black. Claw light, reddish basally, 

 with 3 dorsal denticles and a group of small spinules. Thin, dark seta 2 

 situated laterally near suture; seta 6 situated nearby; setae 1 and 3 

 dark brown, seta 1 situated in basal part, short, thicker than the other setae; 

 seta 3 situated apically, thick, longer than others; all 4 ventral setae light, 

 yellowish; setae 8 and 7 thickened basally, straight or slightly curved, small, 

 seta 5 situated laterally, close to seta 8; seta 4 small, medial to 8. 



Case as in G. a t o m a r iu s, but shorter (Figure 283), built of long plant 

 fragments, arranged in a spiral and attached only at anterior end; fragments 

 narrower than in G. atomarius; spiral usually with 3—4 turns, first turn 

 rauch larger than following; material of cover usually consisting of sedge 



207 



