(4o; 



FIGURES 49— 52. Dasystegia obsoleta Hag.: 



49 — head, thorax and abdominal segment 1, dorsal; 50 — head, ventral; 51 — labrum; 

 52 — mandibles: dorsal, left (A) and right (B). 



(40) 



FIGURE 53. Dasystegia obsoleta Hag. Pronotum 



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

 bodies and in the vegetation of lakes. 



Distribution. USSR: European part, Siberia. In addition, Northern 

 and Central Europe, Mongolia (Kosogol), North America (Canada). 



46 



