Auricula complexa (W. Gregory) 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 : 46

70. Auricula complexa (W. Gregory) Cleve ( Fig. 176 )

Basionym: Amphiprora complexa W. Gregory.

References: Peragallo & Peragallo 1897–1908, p. 193, pl. 42, figs 14, 15; Navarro & Lobban 2009, p. 147, figs 112–114; Lobban et al. 2012, p. 304, pl. 63, figs 1, 2; Cheng & Gao 2013, p. 142, pl. 73, figs 766, 767.

Type locality: Scotland: Lamlash Bay .

Morphometrics: Valves 198 (85–106) μm long, 77 (64–95) μm wide, transapical striae 11 (13–20) in 10 μm.

Remarks: The first collection of this taxon was from Scotland, but mostly reported in subtropical or tropical regions. Auricula complexa has been reported from the coasts of Mahé Island in the Seychelles in the western Indian Ocean ( Giffen 1980), Puerto Rico ( Navarro 1983), the northeastern Brazil ( Gomes et al. 1989), the Gulf of Thailand (Teanpiscut & Patarajinda 2007), Yap and Guam Islands of western Pacific Ocean ( Navarro & Lobban 2009, Lobban et al. 2012), and China ( Cheng & Gao 2013). This taxon inhabits the coastal region of the southern sea of Korea ( Park et al. 2014), and is rarely epiphytic on seaweeds in the Seogwipo coast in Jeju Island.

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).