| Summary: | FIGURES 45–54. SEM images of Australoneis frenguelliae comb. nov. 45, 47, 49 from sample LPC 15908 (treated); 46, 48, 50–51, 54 from sample LPC 15910 (untreated); 52–53 from sample LPC 15908 (untreated). SV internal views. 45, 47, 49. SV without copulae. Note the variable extension of the mid-valve striae. 46. Detail of an elliptic, bi- to triseriate mid-valve stria. 48. Detail of a roughly triangular, multiseriate marginal stria. 50. Areolae of marginal stria occluded by hymenes with radial slits. 51, 54. Detail of the valve margin showing pores occluded by domed hymenes and lying in shallow marginal chamber-like depressions (arrows). 52. SV with SVVC still in place. Note pegged fimbriae lying on the raised virgae (arrows). 53. Detail of the valve apex showing the open SVVC (arrow). Scale bars: 200 nm (Figs 46, 50), 500 nm (Fig. 48), 1 µm (Figs 51–54), 5 µm (Figs 45, 47, 49). Published as part of Guerrero, José M., Riaux-Gobin, Catherine, Debandi, Juan I., Zacher, Katharina, Quartino, Maria Liliana & Campana, Gabriela L., 2021, Morphology of Australoneis gen. nov. and A. frenguelliae comb. nov. (Achnanthales, Bacillariophyta) from the Antarctic Peninsula, pp. 81-98 in Phytotaxa 513 (2) on page 86, DOI:10.11646/phytotaxa.513.2.1, http://zenodo.org/record/5307991
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