Cocconeis dapalistriata Riaux-Gobin, Romero, Compère & Al-Handel

Lobban, Christopher S., 2015, Benthic marine diatom flora of Guam: new records, redescription of Psammodictyon pustulatum n. comb., n. stat., and three new species (Colliculoamphora gabgabensis, Lauderia excentrica, and Rhoiconeis pagoensis), Micronesica 2015 (2), pp. 1-49 : 4

Cocconeis dapalistriata Riaux-Gobin, Romero, Compère & Al-Handel Fig. 21

Ref. illus.: Riaux Gobin et al., 2011, pl. 3, figs 6–8, pls 39, 40.

Samples: GU44AU-2

Dimensions: Length ca. 17 µm, width 10 µm, striae ca 10 in 10 µm

Diagnostics: Distinctive striae pattern; the epithet dapalis, sumptuous, refers to the “remarkable and magnificent SV striation” ( Riaux-Gobin et al. 2011, p. 25).

Comments: Included so far on the basis of a single sternum valve in SEM.

Figures

Figures 16–21. Figs 16, 17. Comparison of frustules of Campylodiscus fastuosa (Fig. 16) and Surirella scalaris (Fig. 17) showing crossed orientation of valves in the former versus parallel orientation in the latter. (GU66F-7A, GU52P-5, respectively) (SEM). Fig. 18. Frustule of C. fastuosa (GU66F-7A) (SEM). Figs 19, 20. C. fastuosa internal valves faces of small and large cells (GU66F-7A) (SEM). Fig. 21. Cocconeis dapalistriata, sternum valve (GU44AU-2) (SEM). Scale bars = 5 µm.