FIGURES 79–84 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas

FIGURES 79–84. Diploneis gigantea sp. nov., SEM external (Figs 79–81) and internal (Figs 82–84) valve views, Lake Tanganyika. 79–81. Specimen from Isanga Bay. 82–84. Specimen from Mutondwe Island. 79. Whole valve. 80. Central area with teardrop shaped depression with proximal raphe ends. 81. Distal raphe ends with deflected terminal fissures; white arrowed areola divided by thickened bars. 82. Half-valve view, showing the curved raphe placed in a depression formed by the canal. 83. Whole valve view. 84. Central area with simple slightly elevated proximal raphe ends. Scale bars = 20 μm (Fig. 79), 10 μm (Figs 82, 83), 5 μm (Figs 80, 81, 84).