Cocconeis carinata Riaux-Gobin, Ector & Witkowski, 2019

Lobban, Christopher S. & Witkowski, Andrzej, 2023, Marine benthic diatoms of Guam: new records, Dictyoneis apapae sp. nov., and updates to the checklist, Micronesica 2023 (2), pp. 1-75 : 7-8

Cocconeis carinata Riaux-Gobin, Ector & Witkowski Figs 39–41

Ref. illus.: Riaux-Gobin et al. 2019, figs 1–35

Samples: GU70A-2A, GU68A-2, inter alia

Dimensions: Length 8 µm, width 5 µm; stria density 26 in 10 µm on both valves.

Diagnostics: Sternum valve with crista marginalis dividing the striae. Striae have single transapically elongate areola distal to crista and 2–3 areolae proximal.

Comments: Abundant in GU70A-2A. This species was recently described from Indian Ocean and Pacific Ocean sites, including the Marquesas I., French Polynesia.

Figures

Figures 39–43. Figs. 39–41. Cocconeis carinata. Fig. 39. Cluster of cells in LM. Fig. 40. Sternum valve. Fig. 41. Raphe valve. Figs. 42, 43. Coscinodiscus hauckii in LM and SEM. Scale bars: Figs 39, 42 = 10 µm, Fig. 43 = 5 µm, Figs 40, 41 = 1 µm.