FIGURE 761. Amphipsyche proluta McL. Pupal cases 



Sheath of fore wings reaching beginning of segment 5, that of hind wings 

 shorter. First tarsal segment of midlegs long and broad, as long as 4 other 

 segments together; natatorial setae present on segments 1 and 2 and a few 

 setae on dorsal side of segment 3; dorsal setae longer than ventral setae 

 (Figure 758). 



Presegmental plates (Figure 759) present on segments 3—8; number of 

 spinules as follows: 111:16-19; IV:22-23; V:17-19; VI: 19-2 0; VII:18-19; 

 VIII:10— 11; transverse rows of the 65—67 small, anteriorly-directed spinules 

 near posterior margin of segment 3, in each half (Figure 759, B). 



Gills present on segments 2—7, forming a pleural and 2 ventral rows (a 

 lateral and a median row); pleural gills with posteriorly-directed, conical 

 base with a long, apical branch which is curved dorsally on segments 2—7; 

 stalks long, with 1 or 2 constrictions. Number and arrangement of gills 

 shown in Table 29. 



Anal lobes (Figure 760) short, with numerous strong, straight or hooked 

 setae. Male genital appendages curved, penis sheath short. 



Case (Figure 76l) of isolated pupae forming a slightly curved tube without 

 540 ventral slit; it is attached to substrate at anterior end; free posterior end of 



616 



