Moreneis cf. hexagona J. Park, Koh & Witkowski, 2012

Park, Joon Sang, Lobban, Christopher S. & Lee, Kyun-Woo, 2018, Diatoms associated with seaweeds from Moen Island in Chuuk Lagoon, Micronesia, Phytotaxa 351 (2), pp. 101-140 : 108

22. Moreneis cf. hexagona J. Park, Koh & Witkowski Fig. 26

References: Park et al. (2012), p. 192, fig. 6.

Samples: Moen5_ Padina

Dimensions: 37.1 μm long, 17.2 μm wide; 14 striae in 10 μm, 15 areolae in 10 μm.

Diagnostics: Valve broadly elliptic with rostrate apices. Areolae radial. Raphe ends opposite deflect.

Comments: The raphe system of the specimen matches the genus Moreneis ( Park et al. 2012) , i.e., the central raphe endings are deflected in opposite directions, and the valve shape is close to M. hexagona . But the valve size is larger than the original specimens (22–34 μm long, 11–12 μm wide).

Figures

FIGURES 23–34. Ten diatom species of Lyrellaes, Cymbellales and Cocconeidales.Fig. 23. Lyrella clavata var. caribaea. Fig. 24. L. lyra. Fig. 25. L. hennedyi var. furcata. Fig. 26. Moreneis hexagona. Fig. 27. Petroneis granulata. Figs 28 and 29. Cocconeis scutellum. Figs 30 and 31. C. heteroidea. Fig. 32. C. convexa. Fig. 33. Gomphonemopsis littoralis. Fig. 34. Achnanthes brevipes. Scale bar = 10 μm.