FIGURES 60-64. Dasystegia variaFabr.: 



60 — larva in case, lateral; 61 — head, dorsal (A) and ventral (B); 

 62 — right mandible of pupa, dorsal; 63 — posterior end of male pupa, 

 dorsal; 64 — ventral appendages and penis sheath of male pupa (60 

 and 61 A — after Hickin, with modifications; 62—64 — after Siltala). 



Number and arrangement of gills of D. varia 



Segment 



Dorsal 



Pleural 



Ventral 



1 









1 



2 



1 



1 



1 





1 



3 



1 

 1 



1 







4 



1 

 1(0) 



1 







5 



1(0) 

 1(0) 



1 







6 





 1(0) 



1 







7 





 1(0) 



1(0) 





1(0) 



Mode of life and habitats. Small, overgrown, stagnant water 

 bodies. 



Distribution. The European USSR. In addition, Europe. 



49 



