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FIGURES 57–68 in Distribution of the genus Cocconeis (Bacillariophyceae) along the Seogwipo coast of Jeju Island, South Korea

FIGURES 57–68. LM micrographs of Cocconeis species (4). Figs 57–61. Cocconeis suzukii, RVs (Figs 57, 59) and SVs (Figs 58, 60, 61) (Figs 57 and 58, 59 and 60, complete valves) Figs 62, 63. C. cyclophora var. meisteri, SV. Fig. 64. C. cyclophora var. decora, SV. Figs 65–68. C. voigtii, RVs (Figs 65, 68) and SVs (Figs 66, 67). Scale bar = 10 μm (Figs 57–68).

FIGURES 3–24 in Distribution of the genus Cocconeis (Bacillariophyceae) along the Seogwipo coast of Jeju Island, South Korea

FIGURES 3–24. LM micrographs of Cocconeis species (1). Figs 3–5. Cocconeis stauroneiformis, RV (Fig. 3) and SVs (Figs 4, 5). Figs 6–8. C. costata, SVs (Figs 6, 7) and RV (Fig. 8). Figs 9–11. C. capensis, SVs. Figs 12–19. C. distans, SVs (Figs 12, 15, 17–19) and RVs (Figs 13, 14, 16) (Figs 14 and 15, 16 and 17, complete valve). Figs 20, 21. C. pelta, SV (Fig. 20) and RV (Fig. 21). Fig. 22. C. cf. pinnata, SV. Figs 23, 24. C. clandestina, SVs. Scale bar = 10 μm (Figs 3–24).

FIGURES 77–83 in Distribution of the genus Cocconeis (Bacillariophyceae) along the Seogwipo coast of Jeju Island, South Korea

FIGURES 77–83. LM micrographs of Cocconeis species (6). Figs 77, 78. Cocconeis heteroidea, RV (Fig. 77) and SV (Fig. 78). Figs 79–83. C. cf. callosa, RVs (Figs 79, 82) and SVs (Figs 80, 81, 83). Scale bar = 10 μm (Figs 77–83).

FIGURES 94–99 in Distribution of the genus Cocconeis (Bacillariophyceae) along the Seogwipo coast of Jeju Island, South Korea

FIGURES 94–99. SEM micrographs of Cocconeis species (9). Fig. 94. Cocconeis cf. diruptoides, the internal view of SV. Fig. 95. C. dirupta var. dirupta, the internal view of SV. Figs 96–98. C. shikinensis, the external view of SV (Figs 97, 98), the internal view of RV (Fig. 96). Fig. 99. C. suzukii, the external view of SV. Scale bars = 1 μm (Figs 94, 98, 99), 2 μm (Figs 95–97).

FIGURES –. Rare taxa (SEM, New Caledonia, Melanesia). Cocconeis sp. 2 in Riaux-Gobin et al. 2015 (31, 32), short marginal SV striae between each short raised virgae (31, arrow; 32, arrowhead), SV narrow sternum, siliceous pearls (31), C. sp. 4 in Riaux-Gobin et al. 2015 (33–34), strong marginal crista marginalis, short marginal striae on top of each short raised virga (33, arrow; 34, arrowhead),?C. sp. 5 in Riaux-Gobin et al. 2015 (35–36), short SV striae and a raised axial structure (35, arrow). Scale bars = 3 µm (31), 2 µm (33, 35), 1 µm (32, 36), 500 nm (34). in Marine Achnanthales (Bacillariophyceae) from New Caledonia (Melanesia): assemblage specificities, ultramafic environment

FIGURES –. Rare taxa (SEM, New Caledonia, Melanesia). Cocconeis sp. 2 in Riaux-Gobin et al. 2015 (31, 32), short marginal SV striae between each short raised virgae (31, arrow; 32, arrowhead), SV narrow sternum, siliceous pearls (31), C. sp. 4 in Riaux-Gobin et al. 2015 (33–34), strong marginal crista marginalis, short marginal striae on top of each short raised virga (33, arrow; 34, arrowhead),?C. sp. 5 in Riaux-Gobin et al. 2015 (35–36), short SV striae and a raised axial structure (35, arrow). Scale bars = 3 µm (31), 2 µm (33, 35), 1 µm (32, 36), 500 nm (34).

FIGURES –8. Cocconeis coronatoides Riaux-Gobin & Romero forma 1. SEM (New Caledonia, Melanesia). SVVC partially attached (2, arrowhead), SV areolae domed hymenes with radial slits arranged by sectors (external view 3, arrowhead), marginal RV hyaline area (external view 4, arrowhead), uniseriate striae up to margin (4), open RVVC (5, ellipse), RVVC with irregularly spread fimbriae (6, arrowhead), SVVC still attached, small marginal chambers (internal view 7, arrowhead), SV margin (external view 8). Scale bars = 3 µm (8), 2 µm (2, 4, 7), 1 µm (6), 700 nm (5), 200 nm (3). in Marine Achnanthales (Bacillariophyceae) from New Caledonia (Melanesia): assemblage specificities, ultramafic environment

FIGURES –8. Cocconeis coronatoides Riaux-Gobin & Romero forma 1. SEM (New Caledonia, Melanesia). SVVC partially attached (2, arrowhead), SV areolae domed hymenes with radial slits arranged by sectors (external view 3, arrowhead), marginal RV hyaline area (external view 4, arrowhead), uniseriate striae up to margin (4), open RVVC (5, ellipse), RVVC with irregularly spread fimbriae (6, arrowhead), SVVC still attached, small marginal chambers (internal view 7, arrowhead), SV margin (external view 8). Scale bars = 3 µm (8), 2 µm (2, 4, 7), 1 µm (6), 700 nm (5), 200 nm (3).

FIGURES – 0. Cocconeis cf. delapunctata Hohn. SEM (New Caledonia, Melanesia). SV with axial void areas (external views 27–29, arrowheads), possible RV with areas devoid of areolae (30, arrowheads). Scale bars = 2 µm (27–30). in Marine Achnanthales (Bacillariophyceae) from New Caledonia (Melanesia): assemblage specificities, ultramafic environment

FIGURES – 0. Cocconeis cf. delapunctata Hohn. SEM (New Caledonia, Melanesia). SV with axial void areas (external views 27–29, arrowheads), possible RV with areas devoid of areolae (30, arrowheads). Scale bars = 2 µm (27–30).

FIGURES – 0. Cocconeis sp. (cf. capensis (Cholnoky) Witkowski). SEM (New Caledonia, Melanesia). External views. Biseriate SV striae (16, 18, twin arrows), narrow and straight SV sternum, marginal large area with one row of beads (16–18), SV marginal area with tiny pores (17), SV crater-like areolae with oblong in a zigzag lumen (19), SV areolae with sort of expansions (20). Scale bars: 4 µm (16), 3 µm (18), 700 nm (17), 400 nm (19–20). in Marine Achnanthales (Bacillariophyceae) from New Caledonia (Melanesia): assemblage specificities, ultramafic environment

FIGURES – 0. Cocconeis sp. (cf. capensis (Cholnoky) Witkowski). SEM (New Caledonia, Melanesia). External views. Biseriate SV striae (16, 18, twin arrows), narrow and straight SV sternum, marginal large area with one row of beads (16–18), SV marginal area with tiny pores (17), SV crater-like areolae with oblong in a zigzag lumen (19), SV areolae with sort of expansions (20). Scale bars: 4 µm (16), 3 µm (18), 700 nm (17), 400 nm (19–20).

FIGURES –. Cocconeis sp. (cf. C. bilicis F.Meister). SEM (New Caledonia, Melanesia). Different specimens with SV sectors separated (or not) by a crista marginalis (21, 24), SV striae uniseriae near the sternum and biseriate thereafter (21, 24), SV areolae lumen with circular ornamentation (23, arrow), crista marginalis (22), SVVC in advalvar view with digit fimbriae (25, arrowhead), large RV axial concave area (26). Scale bars = 6 µm (24), 5 µm (26), 4 µm (21), 3 µm (25), 1 µm (22–23). in Marine Achnanthales (Bacillariophyceae) from New Caledonia (Melanesia): assemblage specificities, ultramafic environment

FIGURES –. Cocconeis sp. (cf. C. bilicis F.Meister). SEM (New Caledonia, Melanesia). Different specimens with SV sectors separated (or not) by a crista marginalis (21, 24), SV striae uniseriae near the sternum and biseriate thereafter (21, 24), SV areolae lumen with circular ornamentation (23, arrow), crista marginalis (22), SVVC in advalvar view with digit fimbriae (25, arrowhead), large RV axial concave area (26). Scale bars = 6 µm (24), 5 µm (26), 4 µm (21), 3 µm (25), 1 µm (22–23).

Figs 37–45 in Two new marine species of Cocconeis (Bacillariophyceae) from the west coast of Sweden

Figs 37–45. SEM images of C. vrangoensis Al-Handal & Riaux-Gob. sp. nov. (BGBM, slide B 40 0043105). 37–39. External RV side showing uniseriate striae on valve face and bi- to triseriate striae on valve margin, as well as variation in valve outline, arrow on Fig. 36 points to the marginal hyaline area. 40–42. Internal RV side showing submarginal rim and marginal areolae, arrow on Fig. 41 points to the folded mantle. 43. Areolae with radiate marginal perforations of the hymens (arrow). 44. Abvalvar side of the valvocopulae showing shape of fimbriae, with intervalary short fimbriae (arrow). 45. Enlarged part of the abvalvar side of the valvocopula with an oblong papillae (arrow).

Figs 2–9 in Two new marine species of Cocconeis (Bacillariophyceae) from the west coast of Sweden

Figs 2–9. LM images. 2–4. RV of C. magnoareolata Al-Handal, Riaux-Gob., R.Jahn & A.K.Wulff sp. nov., showing variations in size and valve outline (BGBM, slide B 40 0043104). 5–7. SV of C. magnoareolata sp. nov. (BGBM, slide B 40 0043104). 8–9. SV and RV of C. arenicola Ryznik (ANSP, slide no. 62634). Scale bars: 10 µm.

Fig. 1 in Two new marine species of Cocconeis (Bacillariophyceae) from the west coast of Sweden

Fig. 1. Map of the west coast of Sweden and location of sampling site, Vrångö Island (black circle).

Figs 22–27 in Two new marine species of Cocconeis (Bacillariophyceae) from the west coast of Sweden

Figs 22–27. SEM images of C. magnoareolata Al-Handal, Riaux-Gob., R.Jahn & A.K.Wulff sp. nov. (BGBM, slide B 40 0043104). 22, 25–26. External view of the outline and stria density of the RV. 23–24. Internal view of the RV exhibiting the slightly raised central area and the submarginal rim. 27. Enlarged part of the external face of raphe valve showing RV hymenes with a row of short marginal slits (arrow).

Figs 16–21 in Two new marine species of Cocconeis (Bacillariophyceae) from the west coast of Sweden

Figs 16–21. SEM images of C. magnoareolata Al-Handal, Riaux-Gob., R.Jahn & A.K.Wulff sp. nov. (BGBM, slide B 40 0043104). 16. Internal view of the SV. 17-18. External view of the SV, showing subquadrangular areolae. 19. Hymenes of the SV arranged as slits on the margin of the areolae (arrows). 20. Abvalvar side of the SV valvocopulae with short fimbriae (arrow). 21. Open valvocopulae of the SV with numerous serrate fimbriae.

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FIGURES 1–24. 1. Stauroneis apiculata. 2, 3. Cocconeis apiculata. 4 in Achnanthes citronella, A. trachyderma comb. nov. (Bacillariophyta) and allied taxa pertaining to the same morphological group

FIGURES 1–24. 1. Stauroneis apiculata. 2, 3. Cocconeis apiculata. 4. Stauroneis(?) obesa. 5. Cocconeis robusta. 6. Rhaphoneis mammalis. 7–9. Achnanthes mammalis. 10. Achnanthes mammalis var. reticulata according to Foged (see text, reproduced with permission of E. Schweizerbart). 11. Achnanthes (Actinoneis) mammalis var. reticulata. 12. Unnamed individual in Schmidt et al. (1895, pl. 198, fig. 40). 13, 14. Cocconeis citrina. 15–17. Cocconeis citronella. 18. Cocconeis sabangi. 19, 20. Cocconeis trachyderma. 21, 22. Achnanthes schmidtii. 23, 24 Achnanthes schmidtii (reproduced with permission of E. Schweizerbart). Scale bars = 20 μm.

FIGURES 36–39 in Cocconeis kurakakea, a new diatom species from Nukutavake (Tuamotu Archipelago, South Pacific): description and comparison with C. diruptoides and C. pseudodiruptoides

FIGURES 36–39. SEM micrographs of Cocconeis kurakakea: the type population on Nukutavake (sample NTV A1), SV internal views. Fig. 36. Entire valve with sigmoid raphe. Fig. 37. Detail of the central area with an asymmetric short fascia (arrowhead). Fig. 38. Details of an apex, with bent terminal raphe ending and smooth edge of the RVVC (arrowhead). Fig. 39. Round small RV areolae with short slits (arrowhead). Scale bars = 2 μm (36), 1 μm (37–38), 600 nm (39).

FIGURES 4–13 in Cocconeis kurakakea, a new diatom species from Nukutavake (Tuamotu Archipelago, South Pacific): description and comparison with C. diruptoides and C. pseudodiruptoides

FIGURES 4–13. LM micrographs of Cocconeis kurakakea: the type population on Nukutavake (sample NTV A1). Figs 4–8. RVs with the asymmetrical small fascia (arrowheads). Figs 9–13. SVs with a decussate pattern. Scale bar = 10 μm.

FIGURES 28–35 in Cocconeis kurakakea, a new diatom species from Nukutavake (Tuamotu Archipelago, South Pacific): description and comparison with C. diruptoides and C. pseudodiruptoides

FIGURES 28–35. SEM micrographs of Cocconeis kurakakea: the type population on Nukutavake (sample NTV A1), raphe valve (RV) external views. Figs 28–29. RVs (raphe valves) with sigmoid raphe and multiple cingular bands. Figs 30–32. Detail of the RV central area with an asymmetric short fascia (30 arrow), and a marginal row of longer areolae (32 arrowheads). Fig. 33. Apex with the terminal raphe ending. Fig. 34. Open RV valvocopula (RVVC) without fimbriae (arrowheads), and cingulum with 4 bands (numbered). Fig. 35. RV areola hymenes with radiate slits. Scale bars = 2 μm (28–29), 1 μm (30–33), 700 nm (34), 100 nm (35).

FIGURES 2–3 in Cocconeis kurakakea, a new diatom species from Nukutavake (Tuamotu Archipelago, South Pacific): description and comparison with C. diruptoides and C. pseudodiruptoides

FIGURES 2–3. Micrographs (LM) of Cocconeis kurakakea: type population on Nukutavake (sample NTV A1). Fig. 2. Represents the SV (sternum valve). Fig. 3. Shows the RV (raphe valve) on the same frustule. Designated as the illustration of the holotype. Scale bar = 10 μm.

FIGURES 45–51 in Cocconeis kurakakea, a new diatom species from Nukutavake (Tuamotu Archipelago, South Pacific): description and comparison with C. diruptoides and C. pseudodiruptoides

FIGURES 45–51. SEM micrographs of Cocconeis pseudodiruptoides Foged: Nukutavake (sample NTV A1). Figs 45–46. SV external views with narrow fascia up to the margins and sigmoid sternum. Fig. 47. Detail of the complex loculi in external view. Fig. 48. Detail of the complex loculi in internal view. Fig. 49. SV internal view with sigmoid sternum and one marginal areola on one side of the fascia (arrowhead). Fig. 50. Internal view of the RV with strongly sigmoid raphe, and a narrow fascia, slightly oblique, reaching the margins (arrowhead), note the large areolae in quincunx on the entire valve. Fig. 51. Open SVVC with short fimbriae (arrowhead). Scale bars = 7 μm (51), 5 μm (45), 4 μm (46), 3 μm (49–50), 700 nm (47–48).