FIGURE 18-20. M in Tiny diatoms Minidiscus vodyanitskiyi sp. nov. (Bacillariophyta) from the Sea of Azov and consideration of polygonal areolae pattern

FIGURE 18-20. M. vodyanitskiyi looks like an intermediate form between M. proschkinae and M. spinulatus because it has the same number of SLP as M. spinulatus, and its areolae construction is identical to M. proschkinae. (Drawings of M. proschkinae and M. spinulatus are from Park et al., 2017, fig. 11; drawing of M. vodyanitskiyi is original).