Aulacodiscus affinis Grunow, 1876

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 : 7

publication ID

https://doi.org/ 10.11646/phytotaxa.517.1.1

DOI

https://doi.org/10.5281/zenodo.8061064

persistent identifier

https://treatment.plazi.org/id/1304879D-DB32-ED33-EAF6-2C790D1DFAA9

treatment provided by

Plazi

scientific name

Aulacodiscus affinis Grunow
status

 

1. Aulacodiscus affinis Grunow ( Figs 10, 11 View FIGURES 2–11 )

Type locality: Gaz. Exped.; Japan.

References: Schmidt et al. 1874–1959, pl. 34, figs 9, 10; Siqueiros-Beltrones & Argumedo-Hernández 2014, figs 26–28.

Morphometrics: Valves 113–178 μm in diameter, striae radiate from the center, 5–8 in 10 μm, areolae 3–5 in 10 μm on a stria. Eight pseudocelli on elevations in the corner of valve.

Remarks: Aulacodiscus affinis is very rare worldwide and its existence is not well known. This taxon was only reported from a few localions worldwide, including the Pliocene sediments of Shikotan Island and Lesser Kuril Ridge in Russia ( Terekhov et al. 2011), and from Magdalena Bay along the western coast of the Baja California Peninsula in Mexico as epiphytes on red seaweed ( Siqueiros-Beltrones and Argumedo-Hernández 2014). It was also very rare in diatom assemblages obtained from the Seogwipo coast, Jeju Island, representing a new record for South Korea.

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