FIGURES 27–32 in A new small marine Diploneis species (Diploneidaceae, Bacillariophyta) from Guangdong Province, China

FIGURES 27–32. Diploneis guangdongensis sp. nov., SEM internal valve views. 27. View of the entire valve. 28. Girdle bands. 29. Valve central area with slightly expanded proximal raphe endings bent to the same side of the valve. 30. Distal raphe endings and elongated alveoli occluded by a thin siliceous layer with perforations arranged in a hexagonal array. 31–32. Areolae in the corroded valve. Scale bars = 1 µm (Figs 27–28, 30, 32); 500 nm (Figs 29, 31).