FIGURES 8–13. Diploneis hoevsgoelensis morphotype 1, SEM external valve views. Fig. 8. Whole valve. Fig. 9 in The genus Diploneis Ehrenberg ex Cleve (Bacillariophyta) from Lake Hövsgöl, Mongolia

FIGURES 8–13. Diploneis hoevsgoelensis morphotype 1, SEM external valve views. Fig. 8. Whole valve. Fig. 9. View of the central area with proximal raphe endings; white arrow showing the narrow hyaline area between the longitudinal canal and the striae. Fig. 10. Distal raphe endings with deflected terminal fissures. Fig. 11. The openings of the alveolus, external cribrate and internal perforate silica layer (see white arrow). Fig. 12. Close view of the structure of the depressed cribrate areolae. Fig. 13. External and internal view of the whole frustule. Scale bars = 10 μm (Figs 8, 13); 5 μm (Figs 9, 10); 1 μm (Figs 11, 12).