Tergite of abdominal segment 9 dark anteriorly, with minute dots; median 

 seta long, lateral seta shorter (Figure 102). Claws of anal legs with 2 large 

 dorsal and 3 smaller denticles behind them. 



Case straight (Figure 99), made of fragments of sedge or other plants, 

 fragments arranged in rings or irregularly; mineral particles are 

 sometimes used. 



FIGURES 99— 105. Trichostegia minor Curt.: 



99 — larva in case; 100 — head, dorsal; 101 — head, ventral; 102 — tergite of abdominal 

 segment 9; 103 — anteclypeus and labrum of pupa; 104 — right mandible of pupa; 105 — 

 posterior end of female pupa, dorsal (99—102 — after Hickin, the others after Siltala). 



Pupa. Length 10 — 13 mm. Frontal sclerite convex anteriorly, without 

 the grooves and tubercles characteristic for Phryganea. Labrum short 

 (Figure 103), narrower posteriorly; the median of the 6 anterior -margin 

 setae smaller than the other 5 large setae. Mandibles (Figure 104) long, 

 apex pointed; slightly curved; a tubercle near base of small seta 



Natatorial setae sparse on mid -tarsi. Dorsal process of abdominal 

 segment 1 with characteristic, posteriorly rounded process. Gills 

 present on segments 2—7, sometimes on 2—8; postsegmental pleural 

 gills sometimes absent on segment 7; only presegmental ventral and 

 dorsal gills on segment 8, or gills absent. Number of spinules of holding 

 apparatus: 111:3-5; IV:2-5; V: 3-6+ 5-9; VI; 3-6; VlI:4-5. 



Anal appendages wide, short, with median finger-shaped process 

 posteriorly (Figure 105). 



71 



