SEM pictures of Luticola cribriareolata M.Rybak, Witkowski, Risjani & Yunianta sp. nov. External valve view (A–C, E–G), External view with cribrated mantle areolae C internal valve view (D, H–J). External details of distal raphe ending and areolae E proximal raphe endings with shallow grooves, and ghost areolae F proximal raphe endings with shallow grooves and stigma opening G internal details of raphe branch with distal raphe end and irregular hymenate structure H proximal raphe endings and longitudinal channel I proximal raphe endings and stigma opening J. Scale bars: 10 µm (A, C, D), 5 µm (B), 4 µm (E, I, J), 3 µm (F), 2 µm (G, H).