FIGURES 7–11 in Identity and typification of Diploneis ostracodarum, Diploneis budayana and Diploneis praeclara (Bacillariophyta)

FIGURES 7–11: Diploneis budyana, SEM micrographs. Fig. 7. External view of whole valve. Fig. 8. Internal view of an entire valve, note the pseudoseptum at the valve apices. Fig. 9. External view of corroded valve, showing the structure of the alveoli and the central area with proximal raphe endings. Fig. 10. Showing the structure of the areolar transapical opening covered with projected occlusions. Fig. 11. Distal raphe endings with question mark-shaped terminal fissure. Scale bars = 10 µm (Figs 7–9); 5 µm (Figs 10, 11).