Figures 1–7. Figs 1, 2 in Marine benthic diatoms of Guam: new records, Dictyoneis apapae sp. nov., and updates to the checklist

Figures 1–7. Figs 1, 2. Actinocyclus cuneiformis, LM, arrows showing rimoportulae. Figs 3, 4. Amphora spectabilis: Fig. 3. LM at two focal planes showing different striae densities on dorsal and ventral surfaces. Fig. 4. Palau specimen in SEM showing character of striae. Figs. 5–7. Amphora subhyalina. Fig. 5 LM, showing the hyaline character. Fig. 6. SEM detail of valves with conopea at central raphe endings (arrow), also showing striae on dorsal (double arrowhead) and ventral (single arrowhead) part of girdle band. Fig. 7. Frustule showing broad dorsal part of some girdle bands. Scale bars: Figs 1–5, 7 = 10 µm, Fig. 6 = 5 µm. Unless indicated otherwise, all light microscopy (LM) was with differential interference contrast (DIC).