Fallacia vittata (Cleve) D.G. Mann

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 : 29

41. Fallacia vittata (Cleve) D.G. Mann ( Figs 80, 81 )

Basionym: Diploneis bioculata var. vittata Cleve.

Synonym: Diploneis bioculata Cleve ; Navicula vittata (Cleve) Hustedt.

Type locality: Ceylon (marine) .

References: Hustedt 1961–1966. p. 371, fig. 1461; Witkowski et al. 2000. p. 215, pl. 70, fig. 21, pl. 71, figs 15, 16; Hein et al. 2008, p. 56, pl. 28, figs 4, 5.

Morphometrics: Valves 18–24 (14–50) μm long, 11–13 (5–18) μm wide, transapical striae 18 (14–24) in 10 μm.

Remarks: Fallacia vittata is a marine form occurring in tropical oceans, and is very rare in European regions extending from the Mediterranean to the North Sea (Hustedt 1961–1966). The taxon was rare in the Bahamas ( Hein et al. 2008), and occurred frequently along the coast of Baja California Peninsula in Mexico (Siqueiros-Beltronesa et al. 2017). It is a typical subtropical diatom inhabiting warmer coasts. It is very rare as benthic diatoms on the sediments along the Seogwipo coast, and is new to South Korea.

Figures

FIGURES 78–90. Diatom taxa of Seogwipo coast in Jeju Island (9). Fig. 78. Cocconeiopsis orthoneoides. Fig. 79. Navicula semiarea. Figs 80, 81. Fallacia vittata. Figs 82–84. Cocconeis dirupta var. flexella. Figs 85, 86. Achnanthes citronella. Figs 87, 88. Cocconeis pellucida. Figs 89, 90. Planothidium quarnerensis f. rhombica. Scale bars = 10 μm.