A project entitled “Survey and Excavation of Korean Indigenous Species” started in 2006 under the National Institute of Biological Resources (NIBR), an organization of the Ministry of Environment of Korea. A number of diatom species have been newly reported to Korea and the species richness of the diatom gradually increases in the meantime. Lee et al. (2012) added 60 new diatom species occurring in the coastal area to the diatom floristic study of Korea. In addition, some genus assemblages of diatoms were intensively studied, and a number of species were newly reported; many naviculoid and
The materials were collected at 71 sites during the period from April 1999 to August 2014 from fresh and marine coastal waters of Korea (Table 1 and Fig. 1). All samples were collected using 20-µm-mesh plankton nets with vertical and/or horizontal towing. Diatom samples were immediately fixed with 4% neutralized formalin. To examine the fine structures and specific characteristics of each diatom, cell organelles and organic matter were removed with concentrated HCl and saturated KMnO4 (Hasle and Fryxell 1970). The permanent slides were observed at ×400 to ×1000 magnification using a light microscope (Eclipse 80i; Nikon, Tokyo, Japan) with a digital camera (DS-Fi1; Nikon, Tokyo, Japan). The other cleaned samples were attached to aluminum stubs, coated with gold-palladium, and examined using a scanning electron microscope (JSM-5600LV; JEOL, Tokyo, Japan).
[Table 1.] Sampling information in this study
Sampling information in this study
Diatom identifications were mainly based on Hendey (1964), Round et al. (1990), Hasle and Syvertsen (1996), and a number of other references including the original descriptions listed for each taxon.
Forty species of diatoms were newly recorded from marine and fresh water in Korea. As shown in the following, diatom taxa were composed of three classes, six subclasses, 13 orders, 19 families, and 28 genera based on the system of Round et al. (1990) and Medlin and Kaczmarska (2004). We described the taxonomic information of diatoms, illustrations, classifications, references, basionyms, synonyms, and distributions.
Class Coscinodiscophyceae Round & Crawford 1990
Subclass Coscinodiscophycidae Round & Crawford 1990
Order Asterolamprales Round 1990
Family Asterolampraceae Smith 1872
Genus
Order Coscinodiscales Round 1990
Family Hemidiscaceae Hendey ex Hasle 1964
Genus
Genus
Family Heliopeltaceae Smith 1872
Genus
Genus
Class Mediophyceae (Jousé & Proshkina-Lavrenko) Medlin & Kaczmarska 2004
Subclass Biddulphiophycidae Round & Crawford 1990
Order Anaulales Round & Crawford 1990
Family Anaulaceae (Schütt) Lemmermann 1899
Genus
Order Biddulphiales Krieger 1954
Family Biddulphiaceae Kützing 1844
Genus
Genus
Order Toxariales Round 1990
Family Toxariaceae Round 1990
Genus
Subclass Chaetocerotophycidae Round & Crawford 1990
Order Chaetocerotales Round & Crawford 1990
Family Chaetoceraceae Ralfs 1861
Genus
Subclass Thalassiosirophycidae Round & Crawford 1990
Order Thalassiosirales Glezer & Makarova 1986
Family Stephanodiscaceae Makarova 1986
Genus
Family Thalassiosiraceae Hasle 1973
Genus
Class Bacillariophyceae Haeckel 1878
Subclass Fragilariaceae Round & Crawford 1990
Order Fragilariales Silva 1962
Family Fragilariaceae Greville 1833
Genus
Genus
Genus
Order Tabellariales Round 1990
Family Tabellariaceae Kützin 1844
Genus
Order Licmophorales Round 1990
Family Licmophoraceae Kützing 1844
Genus
Subclass Bacillariophycidae Mann 1990
Order Achnanthales Silva 1962
Family Achnanthidiaceae Mann 1990
Genus
Family Cocconeidaceae Kützing 1844
Genus
Order Cymbellales Mann 1990
Family Cymbellaceae Greville 1833
Genus
Genus
Family Gomphonemataceae Kützing 1844
Genus
Order Naviculales Bessey 1970
Family Naviculaceae Kützing 1844
Genus
Genus Caloneis Cleve 1894
Genus
Family Scoliotropidaceae Mereschkowsky 1903
Genus
Family Pleurosigmataceae Mereschowsky 1903
Genus
Genus
1. Asteromphalus hyalinus
References: Karsten 1905, p. 90, pl. 8, fig. 15; Hasle and Syvertsen 1996, pp 135, 139–140; Lange-Bertalot 2003, p. 30, pl. 64, figs. 1, 2, pl. 65, figs. 1–4, pl. 66, figs. 1, 2.
Dimension: diameter 32.7–35.8 µm, 7 hyaline rays, sector areolae 5–6 in 10 µm.
Type locality: unknown.
Distribution: Hasle and Syvertsen (1996) considered
Korea distribution: This species was observed one time in the East Sea of Korea on 22 Jan 2009 (ES-02).
2. Asteromphalus parvulus
References: Karsten 1905, p. 90, pl. 8, fig. 14; Hasle and Syvertsen 1996, pp 135, 139-140; Lange-Bertalot 2003, p. 43, pl. 66.
Dimension: diameter 32.7–35.8 µm, 6 hyaline rays, sector areolae 9 in 10 µm.
Type locality: unknown.
Distribution: Hasle and Syvertsen (1996) mentioned
Korea distribution: This species was observed one time in the East Sea of Korea on 29 Aug 2010 (ES-14).
3. Pseudoguinardia recta
References: Von Stosch 1985, pp 307, 312–314, figs. 7–11; Hasle and Syvertsen 1996, p. 130, pl. 22.
Dimension: diameter 46.8 µm, pervalvar axis 44.3 µm.
Type locality: Port Phillip Bay, Victoria, Australia.
Korea distribution: This species was observed one time in the freshwater of Korea on 21 Feb 2008 (FW-05).
4. Actinocyclus exiguus
References: Fryxell and Semina 1981, p. 442, figs. 1–10; Hasle and Syvertsen 1996, p. 122; Lange-Bertalot 2003, pl. 62, fig. 2.
Dimension: diameter 19.6 µm, 10 areolae in 10 µm at the valve face, 12 areolae in 10 µm at the valve margin, 19 areolae in 10 µm at the valve mantle.
Type locality: the southern Indian and Atlantic Oceans on 18 Apr 1976 (49°19.0′ E, 46°4.75′ S).
Korea distribution: This species was observed in the Yellow Sea on 10 May 2012 (YS-13).
Dimension: diameter 58.9–59.8 µm, areolae 6–7 in 10 µm at the centre, 8–9 in 10 µm at the margin, 17 in 10 µm at the valve mantle, distance between rimoportula 10.3 µm.
Korea distribution: This species was observed one time in the Yellow Sea of Korea on 05 Mar 2014 (YS-15).
Remark: The measurement and areolation of this species is similar to the nominate variety of
6. Actinoptychus aster Brun 1892 (
References: Schmidt 1892, pl. 173, fig. 2; Siqueiros-Beltrones and López-Fuerte 2006, pl. 6, fig. 7.
Dimension: diameter 39.3–66.2 µm, areolae 2–4 in 10 µm at the centre, 3–5 in 10 µm at the margin, marginal ribs 4–5 in the valve margin.
Type locality: Sendai, Japan.
Korea distribution: This species has been mainly observed in the Yellow Sea: on 02 Apr 2010 (YS-03), 15 Oct 2010 (YS-21), 15 Apr 2011 (YS-08), and 11 Aug 2014 (YS-01).
7. Schuettia annulata var. minor (Grunow in Van Heurck)
Basionym:
References: Van Heurck 1883, pl. 124, fig. 13; De Toni 1894, p. 1396.
Dimension: length between two corner 35.8 µm, striae 7 in 10 µm at the valve face, areolae 19 in 10 µm at the stria.
Korea distribution: This species was observed one time in the Yellow Sea of Korea on 22 Oct 2010 (YS-04).
8. Eunotogramma marinum (Smith)
Basionym:
Synonym:
References: Peragallo and Peragallo 1908, p. x, pl. 32, fig. 36.
Dimension: length 15.4–40.1 µm, width 3.1–5.0 µm, 7–12 transverse costae.
Type locality: Biarritz, France.
Korea distribution: This species has been mainly observed in the East Sea on 29 Aug 2010 (ES-07), 29 Aug 2010 (ES-11), and 30 Aug 2010 (ES-15).
9. Terpsinoe americana (Bailey) Ralfs in
Basionym:
Synonyms:
References: Bailey 1854, p. 7, figs. 1, 2; Pritchard 1861, p. 859; Grunow 1867, p. 23.
Dimension: length 47.8–48.6 µm, width 25.1 µm, 13–16 areolae in 10 µm at the valve centre.
Type locality: Sebastian River near St. Augustine, Florida.
Korea distribution: This species was observed one time in the South Sea of Korea on 15 Nov 2010 (SS-01).
10. Trigonium arcticum var. japonica (Grunow)
Basionym:
Synonym:
References: Schmidt 1882, pl. 79, figs. 10, 11; Desikachary and Sreelatha 1989, p. 271, pl. 143, figs. 3, 4.
Dimension: length between two corner 94 µm, 4 areolae in 10 µm.
Type locality: Tokyo Bay, Yokohama, Japan.
Korea distribution: This species was observed one time from the coastal water of Jeju Island in Korea on 11 Mar 2012 (Jeju-01).
11. Toxarium hennedyanum (Gregory)
Basionym:
References: Gregory 1857, p. 534, pl. 14, fig. 108; Pelletan 1889, p. 54; Hasle and Syvertsen 1996, p. 252–253; Stidolph et al. 2012, pl. 16, fig. 95.
Dimension: length 465.5 µm, width 10.6 µm, 10 areolae in 10 µm at the valve centre.
Type locality: Lamlash Bay, Scotland.
Korea distribution: This species was observed one time from the coastal water of Jeju Island in Korea on 24 Jun 2014 (Jeju-02).
12. Chaetoceros lorenzianus var. solitarius Prosckina-Lavrenko 1955 (
References: Proschkina-Lavrenko 1955, p. 145, pl. 59, figs. 1–6.
Dimension: apical axis 11.1 µm, transapical axis 7.0 µm.
Type locality: Black Sea.
Korea distribution: This species was observed in the Yellow Sea on 23 Jul 2010 (YS-22) and 23 Jul 2010 (YS-23).
13. Chaetoceros octagonus
References: Hernández-Becerril 1992, pp 218–219, figs. 1, 3–15.
Dimension: apical axis 12.9 µm.
Type locality: Baja California coasts
Korea distribution: This species was observed in the South Sea of Korea on 15 Sep 2012 (SS-09).
14. Chaetoceros simplex
References: Ostenfeld 1901, p. 137, fig. 8; Hendey 1964, p. 137, pl. 19, fig. 2; Hasle and Syvertsen 1996, p. 223.
Dimension: apical axis 12.9 µm, pervalvar axis 11.1 µm
Type locality: the Caspian Sea.
Korea distribution: This species was observed in the South Sea of Korea on 01 Sep 2005 (SS-10).
15. Cyclotella choctawhatcheeana
References: Prasad et al. 1990, p. 419, figs. 2–26; Lange-Bertalot 1996, pl. 41; Lange and Tiffany 2002, fig. 5.
Dimension: diameter 6.9–8.2 µm, 23–25 marginal striae in 10 µm.
Type locality: Choctawhatchee Bay of Florida, Gulf of Mexico (30°30′ N, 80°06′ W).
Korea distribution: This species has been observed from the Yellow Sea and the South Sea: on 17 Feb 2010 (YS-04), 15 Oct 2010 (YS-21), and 02 Nov 2012 (SS-03).
16. Cyclotella cryptica
References: Reimann et al. 1963, p. 75-84, figs. 4-11; Hasle and Syvertsen 1996, p. 31; Germain 1981, p. 36; Kobayasi 2006, p. 31, pl. 43, figs. 1–8; Houk et al. 2010, p. 17, pl. 148, figs. 1–14, pl. 149, figs. 1–6.
Dimension: diameter 6.2–10.3 µm, 10 marginal striae in 10 µm.
Type locality: West Tisbury Great Pond, Martha’s Vineyard, Massachusetts, US.
Korea distribution: This species has been observed in the Yellow Sea and East Sea: on 23 Jul 2010 (YS-23), 14 Oct 2010 (YS-06), 15 Oct 2010 (YS-21), 18 Apr 2014 (ES-13), and 18 Apr 2014 (ES-17).
17. Cyclotella scaldensis
References: Muylaert and Sabbe 1996, pp 336, 338, figs. 1-15; Lange and Tiffany 2002, figs. 85, 86; Houk et al. 2010, p. 19, pl. 155, figs. 1–15, pl. 156, figs. 1–6, pl. 157, figs. 1–6.
Dimension: diameter 14.3–41.6 µm, 10 marginal striae in 10 µm.
Type locality: Temse, Schelde estuary, Belgium.
Korea distribution: This species has been observed in the Yellow Sea and East Sea on 23 Jan 2009 (ES-16), 23 Jul 2010 (YS-23), 14 Oct 2010 (YS-05), 14 Oct 2010 (YS-19), 15 Apr 2011 (YS-08), and 17 Apr 2011 (YS-17).
18. Shionodiscus endoseriatus (Hasle & Fryxell)
Basionym:
References: Fryxell and Hasle 1977, p. 78, pl. 8, figs. 45–49; Hernández-Becerril and Peña 1995, p. 548, figs. 21, 22; Mahood et al. 1986, p. 146, fig. 91; Sar et al. 2001, p. 208, figs. 23–25; Alverson et al. 2006, p. 259.
Dimension: diameter 35.9–41.6 µm, 11–12 areolae in 10 µm at the valve centre, 14 areolae in 10 µm at the valve margin, 9–10 marginal fultoportulae in 10 µm.
Type locality: Pacific Ocean between Ecuador and the Galapagos Islands (03°07′–03°12′ S, 84°42′–84°54′ W).
Korea distribution: This species was observed in the Yellow Sea on 08 Nov 2013 (YS-27) and 16 Jan 2014 (YS-18).
19. Shionodiscus poro-irregulatus (Hasle & Heimdal)
Basionym:
References: Johansen and Fryxell 1985, p. 175, fig. 11; Rivera 1981, p. 113, figs. 317–339; Alverson et al. 2006, p. 260.
Dimension: diameter 18.8–65.3 µm, 6–11 areolae in 10 µm at the valve centre, 8–15 areolae in 10 µm at the valve margin, 4–6 marginal fultoportulae in 10 µm.
Type locality: Talcahuano (Bahia de Concepción), Chile.
Korea distribution: This species has been frequently observed in the coastal waters of Korea: 10 Jun 2011 (SS-04), 10 Jun 2011 (SS-05), 10 Jun 2011 (SS-07), 03 Feb 2012 (SS-08), 02 Apr 2010 (YS-03), 14 Oct 2010 (YS-05), 25 Aug 2006 (YS-07), 04 Mar 2014 (YS-09), 16 Apr 2011 (YS-10), 15 Jul 2011 (YS-11), 15 Jul 2011 (YS-12), 17 Apr 2011 (YS-16), 16 Jan 2014 (YS-18), 16 Apr 2011 (YS-24), 16 Apr 2011 (YS-26), 08 Nov 2013 (YS-27), 22 Apr 2013 (ES-19), 29 Aug 2010 (ES-03), 29 Aug 2010 (ES-04), 29 Aug 2010 (ES-05), 29 Aug 2010 (ES-08), and 29 Aug 2010 (ES-09).
20. Asterionellopsis socialis (Lewin & Norris)
Basionym:
Synonym:
References: Lewin and Norris 1970, p.145, figs. 5, 6, 13, 14, 18; Crawford and Gardner 1997, p. 48, figs. 20–21.
Specimen examined: NIBRDI0000134570 in National Institute of Biological Resources (NIBR), Incheon.
Dimension: length 29.9–48.8 µm, width 5.1–6.1 µm, 46–53 transapical striae in 10 µm.
Type locality: the west coast of the Olympic Peninsula, State of Washington, US.
Korea distribution: This species was observed in the Yellos Sea on 04 Mar 2014 (YS-09).
21. Fragilaria capucina var. austriaca (Grunow)
Basionym:
Synonym:
References: Van Heurck 1881, pl. 39, figs. 16A–B; Lange-Bertalot 1980, p. 748; Krammer and Lange-Bertalot 2004a, p. 126, pl. 109, figs. 21–24, pl. 113, figs. 3–5.
Dimension: length 49 µm, width 4 µm, 10 transapical striae in 10 µm.
Type locality: unknown.
Korea distribution: This species was observed one time at the stream of Namcheon on 22 Feb 2007 (FW-04).
22. Synedra tabulata var. obtusa (Pantocsdk)
Basionym:
Synonym:
References: Hustedt 1932, p. 219, fig. 710h; Simonsen 1987, p. 49.
Dimension: length 105–125 µm, width 6 µm, 13–14 transapical striae in 10 µm.
Type locality: unknown.
Korea distribution: This species was observed in the South Sea of Korea on 07 Feb 2008 (FW-01).
23. Tabellaria sp. (
Dimension: length 34.1–35.2 µm, width 3 µm, 34–35 transapical striae in 10 µm.
Korea distribution: This species was observed in the Yellow Sea on 24 Oct 2006 (YS-03).
Remark: In our knowledge, there is no identical species in this specimen. Therefore, we temporarily consider this species as unidentified status, and further investigation should be performed.
24. Licmophora juergensii
Synonym:
References: Agardh 1831, p. 42; Hendey 1964, p. 168, pl. 26, fig. 14; Honeywill 1998, p. 231, fig. 2a–h.
Specimen examined: NIBRDI0000134571 in National Institute of Biological Resources (NIBR), Incheon.
Dimension: length 35.8–54.3 µm, width 8.2–11.2 µm, 13–16 transapical striae in 10 µm, 20–22 transverse areolae in 10 µm.
Type locality: unknown.
Korea distribution: This species has been mainly observed in the East Sea on 21 Jan 2009 (ES-01), 22 Jan 2009 (ES-06), 23 Jan 2009 (ES-10), 23 Jan 2009 (ES-12), and 23 Jan 2009 (ES-18).
25. Achnanthidium sp. (
Dimension: length 10.5 µm, width 4.7 µm, 20 transapical striae in 10 µm.
Korea distribution: This species was observed in the Yellow Sea on 24 Oct 2006 (YS-02).
Remark: The biseriate striae and the unilaterally deflected terminal raphe fissures are related to the genus
Dimension: long 21.6–24.3 µm, 18.5–21.7 µm.
Korea distribution: This species has been mainly observed in the Yellow Sea on 15 Jul 2011 (YS-11), 02 Nov 2011 (YS-12) and 05 Nov 2011 (YS-14).
Remark: This species differ from the other
27. Encyonema neogracile
References: Krammer 1997, pp 177–178, pl. 82, figs. 1–13, pl. 83, figs. 1–3, pl. 85, figs. 7–10, pl. 86, figs. 9–12, pl. 90, fig. 6, pl. 91, figs. 1–2.
Dimensions: apical axis 47 µm, transapical axis 7.5 µm, transapical striae 12 in 10 μm.
Type locality: Laguna Santarem, Brazilian Amazon.
Korea distribution: This species was observed in the Upo Wetland on 28 Oct 2007 (FW-03).
28. Encyonema leei (Krammer)
Basionym:
References: Krammer 2003, p. 147, 170, pl. 162, figs. 15–19; Ohtsuka et al. 2004, p. 150, figs. 1–24.
Dimensions: apical axis 28.5 µm, transapical axis 7 µm, transapical striae 10 in 10 μm.
Type locality: Kwangcheon River, Uljin country, Korea.
Korea distribution: This species was observed in the Geumgan River on 21 Oct 2007 (FW-06).
29. Gomphonema olivaceoides var. densestriata
References: Foged 1963 , p. 40, pl. 6, fig. 5.
Dimensions: apical axis 18–35 µm, transapical axis 5–6 µm, transapical striae 10–12 in 10 μm.
Type locality: lake in Djursland.
Korea distribution: This species was observed in the Sumgang River on 27 Apr 2002 (FW-07).
30. Gomphonema parvulum f. saprophilum Lange-Bertalot & Reichardt in
References: Lange-Bertalot 1993, p. 69; Krammer and Lange-Bertalot 2004b, pl. 76, figs. 8-13, pl. 77, figs. 5–9.
Dimensions: apical axis 14 µm, transapical axis 6.5 µm, transapical striae 18 in 10 μm.
Type locality: unknown.
Korea distribution: This species was observed one time at the stream of Namcheon on 22 Feb 2007 (FW-04).
31. Gomphonema productum (Grunow) Lange-Bertalot & Reichardt in
Basionym:
References: Van Heurck 1880, pl. 24, figs. 52–55; Lange-Bertalot 1993, p. 7, pl. 73, figs. 14–17, pl. 74, figs. 1–3; Krammer and Lange-Bertalot 2004b, pl. 74, figs. 15–22.
Dimensions: apical axis 29 µm, transapical axis 8 µm, transapical striae 12 in 10 μm.
Type locality: unknown.
Korea distribution: This species was observed one time at the stream of Namcheon on 22 Feb 2007 (FW-04).
32. Amphipleura lindheimeri
Synonyms:
References: Grunow 1862, p. 469, pl. 11, fig. 11; Germain 1981, p. 137.
Dimensions: apical axis 120–330 µm, transapical axis 23–27 µm, transapical striae 26–28 in 10 μm.
Type locality: the mighty waters of America borealis.
Korea distribution: This species was observed one time at the stream of Sueocheon on 24 Apr 1999 (FW-02).
33. Caloneis alpestris (Grunow)
Basionym:
Synonym:
References: Cleve 1894, p. 53; Germain 1981, p. 238; Lange-Bertalot 1996, pl. 24.
Dimensions: apical axis 45–92 µm, transapical axis 6–15 µm, transapical striae 20–24 in 10 μm.
Type locality: stream in Alps, Austria.
Korea distribution: This species was observed one time at the Sueo stream on 24 Apr 1999 (FW-02).
34. Pseudogomphonema monicae Witkowski,
References: Metzeltin and Witkowski 1996, pp 25–26, pl. 57, fig. 2, pl. 58, figs. 11–22, pl. 80, figs. 1–4, pl. 81, fig. 2; Lange-Bertalot 1996, pl. 57–58, 80–81.
Specimen examined: NIBRDI0000134572 in National Institute of Biological Resources (NIBR), Incheon.
Dimension: apical axis 28.0 µm, transapical axis 5.6 µm, 25 transapical striae 25 in 10 μm.
Type locality: sediment in Bear Island, Wadden Sea.
Korea distribution: This species was observed one time in the Yellow Sea on 16 Apr 2011 (YS-13).
35. Progonoia mirabilis (Leuduger-Fortmorel)
Basionym:
Synonym:
References: Schrader 1971 , p. 921.
Dimension: length 86.3 µm, width 29.6 µm, 7 transapical striae in 10 μm.
Type locality: unknown.
Korea distribution: This species was observed one time from the coastal water of Jeju Island in Korea on 11 Mar 2012 (Jeju-01).
36. Gyrosigma littorale (Smith)
Basionym:
Synonyms:
References: Griffith and Henfrey 1856, p. 356, pl. 11, fig. 19; Hendey 1964, p. 250.
Dimension: length 62.9–65.0 µm, width 8.1–8.6 µm, 28 areolae in 10 μm, 22 transapical striae in 10 μm.
Type locality: coast of Sussex, England.
Korea distribution: This species has been observed two times in the Yellow Sea and the South Sea on 03 Oct 2012 (YS-13) and 02 Nov 2012 (SS-02), respectively.
37. Pleurosigma amara
References: Stidolph 1992, p. 349, figs. 44–51, 64–76.
Dimension: length 155–271 µm, width 21–27 µm, 22–25 oblique striae in 10 μm, 16–24 transverse striae in 10 μm.
Type locality: Westshore, Napier, North Island, New Zealand; in salt marsh.
Korea distribution: This species was observed one time in the South Sea of Korea on 2 Nov. 2012 (SS-06).
38. Pleurosigma strigosum
Synonyms:
References: Smith 1852, p. 7, pl. 1, fig. 6; Hendey 1964, p. 246; Lange and Tiffany 2002, fig. 41.
Dimension: length 134–170 µm, width 20–24 µm, 19–25 oblique striae in 10 μm, 17–22 transverse striae in 10 μm.
Type locality: coast of Sussex, England.
Korea distribution: This species was observed one time in the Yellow Sea on 14 Apr 2007 (YS-20).
39. Pleurosigma tenuiforme
References: von Quillfeldt 2000, p. 222, figs. 1–7.
Dimension: length 135 µm, width 11 µm, 26 oblique striae in 10 μm, 28 transverse striae in 10 μm.
Type locality: Barents Sea (76°45′76″ N, 23°00′11″ E).
Korea distribution: This species was observed one time in the Yellow Sea on 17 Feb 2010 (YS-04).
40. Pleurosigma inscriptura
References: Harper et al. 2009, p. 343, figs. 18–22.
Dimension: length 139 µm, width 22.6 µm, 19 oblique striae in 10 μm, 21 transverse striae in 10 μm.
Type locality: Island Bay, Wellington, New Zealand.
Korea distribution: This species was observed one time in the Yellow Sea on 03 Oct 2012 (YS-14).
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Korean distribution of newly recorded diatoms
Most taxa have been rarely observed in the specific areas, except for
Checklist of occurrence of 40 species from the Yellow Sea (YS), South Sea (SS), East Sea (ES), Jeju Island (Jeju) and the freshwater regions (FW); each value indicate the number of occurrence from the sites in each area