FIGURES 41–44 in Diploneis fenestrata sp. nov. (Bacillariophyta), a new aerophilic diatom species from Zambia, Africa

FIGURES 41–44. Diploneis fenestrata SEM: type material (sample D-NWU 12-388). Figs 41–43. External valve view showing square openings present only above longitudinal canal and periphery of opening demarcated by areolae-like structures. Fig. 44. Internal view of whole valve. Scale bars = 1 µm (Figs 41–43), 10 µm (Fig. 44).