Auricula intermedia (Lewis) Cleve

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 : 48

72. Auricula intermedia (Lewis) Cleve ( Figs 178, 179 )

Basionym: Amphora intermedia Lewis.

Type locality: Atlantic , New Jersey .

Reference: Lobban et al. 2012, p. 304, pl. 63, figs 3, 4.

Morphometrics: Valves 52 (62–63) μm long, 20 (25) μm wide, and transapical striae 16 (14–16) in 10 μm.

Remarks: Auricula intermedia was reported from the tropical regions, Brazil ( Kutner 1961), Guam in western Pacific Ocean ( Lobban et al. 2012), Egypt in the Red Sea area ( Gerasimiuk & Kovtun 2014), the Black Sea in Ukraine ( Nevrova 2014), and the coast of Yukatán in Mexico ( López-Fuerte et al. 2017). It is distributed from tropical to temperate regions. This taxon was found twice only on a rock pool of the Seogwipo coast in Jeju Island, and represents a new record for South Korea.

Figures

FIGURES 176–184. Diatom taxa of Seogwipo coast in Jeju Island (18). Fig. 176. Auricula complexa. Fig. 177. A. flabelliformis. Figs 178, 179. A. intermedia. Figs 180, 181. Pseudictyota reticulata: external view of valves, and large ocellus and a rimoportula tube (Fig. 180). Figs 182, 183. P. dubium: internal (Fig. 182) and external view (Fig. 183) of valve. Figs 176–179: LM, Figs 180–184: SEM. Scale bars = 10 μm (Figs 176–179, 181, 183, 184), 5 μm (Fig. 182), 2 μm (180).