moderately long, secondary seta; posterior surface with a similar seta and 

 a small, thin seta. Tarsus narrower distally, slightly dark; primary, dorsal 

 subapical seta longer than on midlegs, blackish; distal seta short, light; 

 dorsal surface with 2 small, thin, transparent, secondary setae; posterior 

 surface with a large, moderately long, blackish brown, secondary seta, longer 

 than primary setae, at base; anterior surface with a short, thin, brown seta; 

 primary distoventral setae of equal length. Claw brown, strongly curved; 

 seta light. 



Number and arrangement of gills of larva of 

 339)s.pallipes (after Siltala) 



Number and arrangement of gills of pupa of 

 S. p a 1 1 i p e s fafter Siltala) 



Segment 



Dorsal 



Ventral 



2 



1-2 



1-2 



3 



2-4 



2-5 

 3-4 



4 



2-3 

 3-4 



2-3 

 2-3 



5 



3-4 



2-3 

 3 



6 



3 



3-5 



2-3 



2-3 



7 



3-4 



3-4 



2-3 

 3-4 



Segment 



Dorsal 



Ventral 



2 



1 



1 



3 



3-4 



3 

 3-4 



4 



1-3 



2-3 

 2-3 



5 





2-3 

 2-3 



6 





2-3 

 2-3 



7 





2-3 



Dorsal process of abdominal segment 1 low; lateral processes more 

 ventral than usual. Lateral line from beginning of segment 4 to beginning of 

 segment 8. Gills dorsally and ventrally on segments 2—7, with 1—2 filaments 

 on segment 2, 2—5 filaments on other segments; presegmental and post- 

 segmental, except on segment 2 and dorsal side of segment 3, which lack 

 presegmental gills. 



Tergite of segment 9 absent or weakly sclerotized, whitish; anterior- 

 angle and medioanal setae moderately long; 6 setae between the medioanal 

 338 setae, including a moderately long, 2 short, and 3 small, thin, light setae; 



6 setae between medioanal and anterior-angle setae, including 3 small, thin, 

 light, and 3 larger setae, among them a moderately long seta, almost as 

 long as anterior- angle seta; 4—5 small setae on surface near posterior 

 margin. 



Area "b" of anal legs whitish dorsally, not sclerotized; lateral part with 

 a thin, light brown sclerite; ventral part brown, with a narrow, reddish brown, 

 distal stripe; in contrast to Goer a and Limnophilidae, median distal seta 

 lighter and thinner than others, but slightly longer, brown; neighboring and 

 lateral seta black, thick, long, latter slightly smaller than former; subapical 

 seta at median margin thin, grayish, moderately long; ventral seta dark 

 brown, firm, moderately long, situated lateral to base of sclerite "c. " 

 Sclerite "c" with wide, dark reddish brown, lateral margin, its surface with 

 minute, pointed tubercles, area near margin brown, brownish near ventral 

 margin; seta thin, short, dark brown (Figure 5 78, A). 



423 



