Published August 30, 2021 | Version v1
Taxonomic treatment Open

Aulacodiscus affinis Grunow 1876

Authors/Creators

Description

1. Aulacodiscus affinis Grunow (Figs 10, 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.

Notes

Published as part of Joh, Gyeongje, 2021, Distribution and frequent occurrence of diatom taxa (Bacillariophyta) inhabiting warmer oceans in Seogwipo coast of Jeju Island, southernmost Korea, pp. 1-67 in Phytotaxa 517 (1) on page 7, DOI: 10.11646/phytotaxa.517.1.1, http://zenodo.org/record/8061058

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Linked records

Additional details

Biodiversity

Scientific name authorship
Grunow
Kingdom
Chromista
Phylum
Ochrophyta
Order
Coscinodiscales
Family
Aulacodiscaceae
Genus
Aulacodiscus
Species
affinis
Taxon rank
species
Taxonomic concept label
Aulacodiscus affinis Grunow, 1876 sec. Joh, 2021

References

  • Siqueiros-Beltrones, D. A. & Argumedo-Hernandez, U. (2014) Particular structure of an epiphytic diatom assemblage living on Ploclamium cartilagineum (Lamoroux) Dixon (Rhodophyceae: Gigartinales). CICIMAR Oceanides 29: 11 - 24. https: // doi. org / 10.37543 / oceanides. v 29 i 2.136
  • Terekhov, E. P., Tsoy, I. B., Mozherovskii, A. V. & Vagina, N. K. (2011) Pliocene sediments of Shikotan Island (Lesser Kuril Ridge). Stratigraphy and Geological Correlation 19: 337 - 351. https: // doi. org / 10.1134 / S 0869593811030105