FIGURES 299–322 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas

FIGURES 299–322. Diploneis nana sp. nov., LM (Figs 299–319), SEM external (Figs 320, 322), and internal (Fig. 321) valve views, Lake Tanganyika. 299–302, 304, 306–308, 310–312, 315–318. Specimens from the type material, Mahale National Park. 303, 319. Specimens from Isanga Bay. 305, 309, 313, 314, 320–322. Specimens from Kiganza Bay. Fig. 306. Holotype specimen. Fig. 320. Valve view, showing canal structure, striae structure, and inter-areolar fin-like silica ridges. 321. Valve view, showing simple raphe branch and alveoli occluded by thin silica layers. 322. Detail central area with teardrop shaped depressions with proximal raphe ends bent to the same side of the valve; white arrowed inter-areolar fin-like shaped ornamentations. Scale bars = 10 μm (Figs 299–319), 5 μm (Figs 320, 321), 2 μm (Fig. 322).