Pronotum (Figure 685) yellow, with broad, black, posterior margin and 

 a narrow, reddish brown stripe at anterior margin; anterior part without 

 dots; posterior part with oblique rows of 3 — 4 large, blackish brown dots; 

 chaetotaxy as in Figure 685. 



Mesonotum (Figure 685) incompletely sclerotized; tergite not reaching 

 margin, and divided by a transverse suture; only anterior part with a 

 median suture; pattern consisting of brownish areas and distinct dark brown 

 dots. Anterior-margin setae short; anterior-angle setae replaced, as in 

 Phryganeidae, by groups of 9 — 10 thin, moderately long setae; posterior 

 part with a moderately long medioanal seta, a slightly smaller lateral seta, 

 and a small, thin intermediate seta. 



Metanotum (Figure 685) with a deep, transverse fold and lateral groups 

 of 11 long anterior-margin setae; anterior part with 2 — 3 median pairs of 

 small, dark, sclerotized dots on a slightly sclerotized brownish area. 

 Anterior-margin setae short, thin; posterior part with a moderately long 

 medioanal seta, a short lateral seta, and a smaller intermediate seta. 



Propleuron with 2 small sclerites; episternal-epimeral sclerite in form 

 of a narrow oblong plate divided by a short, black, pleural suture; trochantin 

 darker and wider, with a blackish brown large seta; seta of epimeron short. 

 Meso- and metathorax with large pleurites; mesopleuron with black pleural 

 suture and wide, dark, distal margin of episternum; anterior half of 

 mesepimeron similar, basal part of mesepimeron brownish almost to middle, 

 mesepisternum brownish in posterior angle; metapleuron lighter, with wider 

 epimeron; pleural suture and distal margin narrow; posterior angle with a 

 small, light brown spot; both setae of sclerites long, situated distally in 

 middle of margin on episternum, near suture on mesepimeron, in distoventral 

 angle on metepimeron. 



Legs yellowish brown, with large dark dots in some places; fore- and 

 midlegs similar; hind legs long, thin, with a modified claw which forms a 

 tactile organ. Numerous secondary setae on legs. 



Fore coxa (Figure 686, A) without anterior dorsal secondary setae, except 

 for a small, thin seta near large primary basodorsal seta; anterior 

 distodorsal seta slightly shorter; posterior dorsal seta situated among 

 numerous secondary setae at posterior dorsal margin; anterior surface with 

 longitudinal row of numerous large setae including 2 primary setae; ventral 

 side densely covered with long secondary setae; both distoventral setae 

 slightly thicker, of equal length. 



Trochanter with sparse secondary setae; 3 anterior ventral setae 

 distinct among primary setae; of these, one thin, long, basal seta near suture, 

 the 2 other setae represented by short spines. Femur with a dorsal row of 

 sparse, short setae including a primary basodorsal seta; several large, dark 

 dots behind setae; distodorsal seta short, thin, directed posteriorly; 

 anterior primary seta in form of long brown spine; posterior primary seta 

 situated ventrally, represented by a large yellow spine; both ventral setae 

 in form of short, yellow spines in middle of femur among thin secondary 

 setae; anterior surface with sparse secondary setae; posterior surface with 

 a subdorsal row, and a basal group of thin long setae. 



Tibia with sparse, large, dark, sometimes indistinct dots; a characteristic 

 large posterior subapical process, serving to hold sand grains during 

 building of case, with primary posterior distoventral seta in form of a brown 

 spine at apex; a subventral row of similar spines anteriorly, becoming 

 smaller toward base; other secondary setae sparse, thin. 



527 



