Mode of life and habitats. Shallow, overgrown waters of littoral 

 of lakes, ditches, often swampy environment. Pupae occur in second half 

 of summer. Feeding on detritus and algae. 



Distribution. Northwestern, western, central, and southern parts of 

 the European USSR, Crimea, Ciscaucasia, Western Siberia. In addition. 

 Central and Northern Europe. 



9. Limnophilus borealis Zetterstedt 



Siltala, 1902:49-50, Figure 9; 1904c: 34-38, Figure 8.- Lestage, 1921 : 

 734-735,246. 



(201) 



3^0 



3ifZ 



FIGURES 340-343. Limnophilus d e ci p i en s KoL: 



340 — right trochanter and femur of foreleg (A),midleg (B) and hind 

 leg (C), posterior; 341 — larval case. Pupa: 342 — penis sheath and 

 ventral appendages; 343 - anal rods (342,343 - after Siltala). 



Full-grown larva. Length 20—28 mm. Body light, with dark, pinkish 

 brown dots; stripes and spots indistinct, sometimes absent. Main color of 

 head (Figure 344, A) whitish yellow. Pattern on frontoclypeus narrow, not 

 reaching frontal sutures, slightly wider anteriorly, darker anterior part not 

 reaching intermediate seta; wedge -shaped pattern of posterior part distinct. 



251 



