Eunotia cf. neomundana Metzeltin & Lange-Bertalot,

Iconogr. Diatomol., 5: 69, pl. 19, figs 1-6, pl. 22, figs 1-3. 1998.

(Figs. 66-68)

Valves almost linear, with a slightly triundulate ventral and dorsal margins. Ends apiculate, cuneate-apiculate, and attenuate-rounded. Striae parallel to slightly radiate at the ends, equidistant. Length: 25.2-76.1 μm; width: 6-10 μm; striae 8-13 in 10 μm. The studied population is similar to the type material described in Metzeltin & Lange Bertalot (1998) however; specimens documented have lower values of length and width.

Material examined: BRAZIL, MATO GROSSO DO SUL: Taquaruçú, Patos Lake, 23.III.2018, sediment, D.T. Ruwer (Nupélia UEM - 18101-120) .

Occurrence: Paú Veio Lake, Upper Paraná River floodplain, (Biolo & Rodrigues 2013).