FIGURES 30–35 in Aulacoseira veraluciae sp. nov. (Coscinodiscophyceae, Aulacoseiraceae): a common freshwater diatom from Brazil

FIGURES 30–35. Aulacoseira veraluciae, SEM. Scales: 2 µm (Figs 30, 31, 34), 1 µm (Figs 32, 33, 35). Figs 30, 31. External rimoportulae openings (arrows) in the separation and linking valves, respectively. Fig. 32. Internal rimoportula opening (arrow) near the valve face/ mantle junction in the separation valve. Fig. 33. Internal rimoportulae openings (arrows) on the ringleist. Fig. 34. Detail of ringleiste. Fig. 35. Aspect of the girdle bands. Note the fimbriate valvocopula (arrow).