(191) 



319 



322 



FIGURES 319-322. Limnophilus f 1 a v i c or n i s Fabr. Pupa: 



319 — habitus; 320 - dorsal process of abdominal segment 1; 

 321 — anal rod; 322 — sheath of penis and ventral appendages 

 (319 - after Ulmer.the others after Siltala). 



Anal rods with fewer fine spinules than in L. rhomb icus; setae the 

 same, both posterior setae, apical and subapical, black, relatively large 

 (Figure 321 ). 



Sheath of ventral appendages (Figure 322 ), as in L. r h o m b i c u s, longer 

 than the bifid, rounded penis sheath. 



Pupal case 19—22 mm, as in larva; posterior opening covered with an 

 irregular membrane with one or a few holes; anterior membrane thin, with 

 numerous holes. 



Mode of life and habitats. Feeding on algae and detritus, in 

 ponds, puddles, rarely in littoral zone of lakes; tolerating some pollution; 

 recorded from polluted ponds. 



Distribution. The European USSR, except northeast; some localities 

 in Southern Siberia. In addition, Europe. 



6. Limnophilus stigma Curtis 



Meyer, 1867:163.- Struck, 1896:618, Figure 3; 1900:18-19, 

 Figure 13a-c. - Ulmer, 1900:849-850, Figure 3. - Ostwald, 1901 :115-116.- 

 Siltala, 1902:59-62, Figure 12.- Struck, 1903:106.- Ulmer, 1903:58; 

 1903 b: 195.- Siltala, 1904 c: 45.- Thienemann, A., 1905:570, Figure 21.- 

 Ulmer, 1909:260, Figure 391.- Lestage, 1921:733-734, 742-745, 749, 

 Figures 256,258.- Lepneva, 1940:214-215, Figure 160, 7-8. 



240 



