Nitzschia fluminensis Grunow

Joh, Gyeongje, 2021, Distribution and frequent occurrence of diatom taxa (Bacillariophyta) inhabiting warmer oceans in Seogwipo coast of Jeju Island, southernmost Korea, Phytotaxa 517 (1), pp. 1-67 : 41

67. Nitzschia fluminensis Grunow ( Figs 146–149 ).

Synonym: Nitzschia neogena Grunow.

References: Foged 1984, p. 75, pl. 58, fig. 4; Witkowski et al. 2000, p. 381, pl. 202, figs 6–9, pl. 94, fig. 1; Hein et al. 2008, p. 84, pl. 58, fig. 12

Type locality: The Adriatic Sea.

Morphometrics: Valves 171 (130–160) μm long, 13 (13–15) μm wide, fibulae 4 (4–6) in 10 μm, transapical striae 14 (14–16) in 10 μm.

Remarks: Nitzschia fluminensis is similar to N. majuscula Grunow in size and valve morphology, but differs in that fibulae are irregularly spaced and partly prolonged into transapical ribs. It is a marine taxa inhabiting warmer coasts, of Puerto Rico ( Navarro 1983), Cuba ( Foged 1984), the Mediterranean ( Witkowski et al. 2000), the Bahamas ( Hein et al. 2008), the Cape Verde Islands off the northwestern Africa ( Stidolph et al. 2012), and the Baja California Peninsula of Mexico (Siqueiros-Beltrones et al. 2017). In the Seogwipo coast, it is rarely encountered in rock pools along the Seogwipo coast in Jeju Island, representing a new record for South Korea.

Figures

FIGURES 146–156. Diatom taxa of Seogwipo coast inJeju Island(15).Figs 146–149.Nitzschia fluminensis. Figs 150–152.Campylodiscus stellatus. Figs 153, 154. C. fastuosus. Figs 155, 156. Coronia samoensis. Scale bars = 10 μm.