| Summary: | FIGURES 36–44. SEM images of Australoneis frenguelliae comb. nov. 36–39, 41 from sample LPC 15910 (untreated); 40, 42–44 from sample LPC 15908 (treated). SV external views. 36. Valve in face view. Note crista marginalis and transapical raised structures. 37. Valve in face view and underlying detached fimbriate SVVC (arrow). 38. Detail of the valve apex. 39. Detail of valve margin showing multiple pores at the end of the stria (arrow) above the shallow furrow (arrowhead) delimiting valve face from valve mantle. 40. Detail of nonareolate mid-valve zone showing embossed transapical structures (arrow) and scattered small pores (arrowheads). Note the numerous small silica warts covering the valve face. 41. Mid-valve short stria showing pegged areolae. 42. Areola of marginal stria occluded by hymen with radial slits and supported by one peg. 43. Detail of valve margin showing multiple pores with rimmed openings (arrow). Note that some of the areolae are round and with hymenes not pegged (arrowheads). 44. Detail of the marginal pores showing rimmed to shortly conical external openings (arrows). Scale bars: 200 nm (Figs 42, 44), 500 nm (Figs 41, 43), 1 µm (Fig. 39), 2 µm (Figs 38, 40), 5 µm (Figs 36–37). 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 85, DOI:10.11646/phytotaxa.513.2.1, http://zenodo.org/record/5307991
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