:23i: 



♦Z7^ 



47^ 



FIGURES 409 and 410. Limnophilus in c i s u s Curt.; 



409 — head, dorsal (A) and ventral (B), labium (C), right mandible, 

 inner side (D); 410 — penis sheath and ventral appendages of male 

 pupa f409 - after Zarechnaya; 410 -after Siltala). 



5. Genus Phac op t e ryx Kolenati 



Full-grown larva. Medium-sized, 12 — 14 mm long. Greater part of 

 head uniformly dark. Apical ventral seta of fore and hind femur moderately 

 long, dark, relatively thin, and much longer than basal seta. Case made of 

 small fragments of thin leaves, usually trihedral. 



Two species occur in the USSR; the larva of only one species is known. 



Mode of life and habitats. Detritophagous, small, stagnant 

 water bodies, often in swampy environment. 



Distribution. Western, northern, and central parts of the European 

 USSR, Urals, Western and Eastern Siberia, the Far East. In addition. 

 Northern and Central Europe. 



291 



