Figure 6 from: Rybak M, Witkowski A, Peszek L, Kociolek JP, Risjani Y, Nguyen DH, Zhang J, Yunianta, Nguyen VD, Gastineau R, Duong TT, Rosa P, Meleder V (2021) Marine and brackish Luticola D.G.Mann (Bacillariophyta) species from the Java Sea and South China Sea coasts with the description of three new species. PhytoKeys 183: 115-142. https://doi.org/10.3897/phytokeys.183.71049

Figure 6 LM pictures of Luticola belawanensis Levkov & Metzeltin in size diminution series (A–M). External view of frustule (N, O). Internal view of frustule (P, Q). Internal details of: raphe branch with distal raphe end and hymen structure R proximal raphe endings and longitudinal channel S proximal raphe endings and stigma opening T. Scale bars: 10 µm (A-M, P), 5 µm (N, O, Q, S), 3 µm (R, T).