FIGURES 2–14 in Aulacoseira principissa sp. nov., a new 'centric' diatom species from the sub- Antarctic region

FIGURES 2–14: LM images of Aulacoseira principissa. All pictures taken from the holotype population (sample BW390). Figs 2–4 show girdle views whereas Figs 5–14 show valve views. Fig. 2: Chain of six entire frustules and two valves in girdle view, with clearly visible pervalvar striae. Fig. 3: Girdle view with cross-section focus. Fig. 4: Chain of two entire frustules and one valve. Figs 5–11: Decreasing size range of valve views. Note the irregular areola pattern in Figs 9–11. Figs 12–13: Valve views showing the Ringleiste. Fig. 14: Photograph taken using the method explained in Houk & Klee (2007) showing the possible position of the rimoportula (rp?). Scale bars represent 10 µm.