Number and arrangement of gills ofD. pugnax 



Segment 



Dorsal 



Ventral 



2 







3 







4 







5 







6 







7 







branched, posterior seta strong , pointed, both setae short, light brown; 

 basoventral seta moderately long, strong, grayish brown; both posterior 

 ventral setae the same, anterior ventral setae forming large, pointed, 

 yellowish spines; large, light chaetoids situated ventrally in setose area, 



and on entire ventral margin of femur, 

 as in L. hirtum. Basodorsal seta 

 and apical dorsal seta of femur strong, 

 brown, moderately long, anterior seta 

 situated subapically, short, strong, 

 reddish brown; both ventral setae 

 represented by yellowish spines, 

 apical spine larger than basal; primary 

 posterior seta dark brown, moderately 

 long, situated subventrally between 

 spines. Dorsal setae of tibia in 

 2 pairs, light, thin, like those of 

 L. hirtum; distoventral setae in form 

 of 2 short, light spines, anterior spine 

 yellowish, situated subventrally; 

 posterior smaller, blunt, ventral; small 

 spinules at ventral margin. Primary 

 distoventral setae of tarsus thin, 

 moderately long; anterior seta only 

 slightly shorter than posterior, in contrast to L. hirtum. 



Dorsal process of abdominal segment 1 little differentiated; lateral 

 processes large. Gills on segments 2—7, dorsal gills postsegmental only, 

 in contrast to L. hirtum. 



Tergite of abdominal segment 9 small, brownish, with indistinct anterior 

 margin; medioanal and anterior-angle setae relatively thin, moderately 

 long, blackish brown; intermediate and lateral seta short, light, very thin. 



Sclerite "b" of anal legs, as in L. hirtum, with little differentiated 

 dorsal side, forming a narrow, brownish, distal stripe; outside normally 

 developed, brown; ventral side reddishbrown; me diodistal and neighboring 

 seta black, very long, and thick, largest setae on entire body; lateral seta 

 thinner, shorter, blackish brown; subapical seta at median m.argin slightly 

 smaller, dark reddish brown; ventral seta brown, moderately long. 

 Sclerite "c" brownish, with reddish brown lateral margin; seta situated 

 basally, dark brown, short, thin. Claw mainly light brown, brown basally, 

 reddish brown apically, with a large, dorsal denticle; several minute 

 spinules at base of denticle; both median setae 1 and 3 situated subdorsally, 

 seta 1 short, light, basal; seta 3 apical, dark brown, very long, almost twice 

 as long as claw; seta 2 situated dorsally at end of suture, moderately long; 

 seta 6 situated laterally in distal part near suture, brown, almost twice as 

 long as seta 2; ventral setae as in L. hirtum; setae 7 and 8 short, thick, 

 light, situated one behind the other; seta 5 situated laterally, small, thin; 

 seta 4 situated medially, slightly larger. 



Case (Figure 610) 7—9 mm long, straight, round in cross section, slightly 

 narrower posteriorly, made mainly of sand grains; anteriorly with 2—3 rows 

 of regularly arranged, large pieces of detritus, as in L. hirtum; 4 in a 

 row, but rounded; some cases before pupation consist almost entirely of 



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