Synedrosphenia gomphonema (Janisch & Rabenhorst) Hustedt, 1927

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 : 12

12. Synedrosphenia gomphonema (Janisch & Rabenhorst) Hustedt ( Figs 66–68 )

Basionym: Synedra gomphonema Janisch & Rabenhorst.

Type locality: Honduras .

References: Hustedt 1931 –1959, p. 241, fig. 723; Cheng & Gao 2013, p. 60, pl. 12, fig. 149, pl. 23, figs 342, 343.

Morphometrics: Valves 335 (240–750) μm long, 23 (18–28) μm wide in the widest parts, transapical striae 13 (12–14) in 10 μm.

Remarks: This taxon widely distributed in the coasts of warmer ocean, in Central America, South Asia and Australia, and fairly common near Banyuls in southern France ( Hustedt 1931 –1959), occurred as plankton in Tahiti ( Ricard 1977), and Takapoto Atoll of Tuamotu Archipelago, French Polynesia ( Delesalle et al. 2001) and as an epiphyte in the Bahamas ( Hein et al. 2008). It has been known as a widespread taxon by Hustedt (1931 –1959), but has only been reported in a few places. This species was found very rarely as an epiphyte in rock pools along the Seogwipo coast in Jeju Island, and newly reported for South Korea.

Figures

FIGURES 58–68. Diatom taxa of Seogwipo coast in Jeju Island (7). Figs 58–60. Ardissonea pulcherrima. Figs 61–64. Grammatophora undulata. Fig. 65. Bleakeleya notata. Fig. 66–68. Synedrosphenia gomphonema. Scale bars = 10 μm.