(425) 



FIGURES 690-692. Molanna albicana Zett.: 



690 — head, dorsal (A) and ventral (B); 691 — mesonotum; 692 — right anal 

 leg, dorsal. 



Mode of life and habitats. Lakes, usually on a bottom of sand 

 with silt or with detritus in lower zone of littoral at a depth of 1 — 3 m; in 

 sublittoral to 7—9 m, sometimes deeper (Lepneva, 1928:48 — 50). 



Distribution. Northern and northeastern parts of the European USSR, 

 Siberia. In addition. Northern Europe. 



427 3. Molanna submarginadis McLachlan 



Lepneva, 1928:50— 52, Plate II, C, 1—4. 



Full-grown larva. Length 15 — 16 mm. Main coloration light yellow; 

 pattern brownish, consisting of stripes and spots. Frontoclypeus (Figure 

 693, A) laterally with narrow dark stripes; greater part of sclerite light, 

 including posterior angle; dorsal stripes straight, narrow anteriorly and 



533 



