LM micrographs of Luticola tropica Levkov, Metzeltin & Pavlov in size diminution series (A–T) and isolated open copula U external view of valve (V, W) Detailed external views showing distal raphe ending X stigma opening Y proximal raphe endings with thread-like grooves (Y, Z) and areolae structure (X–Z). Internal view of valve AA detailed internal close-ups showing distal raphe ending AB proximal raphe endings and stigma opening AC. Scale bars: 10 µm (A–U), 5 µm (V, W, AA), 4 µm (X, Y, AB, AC), 3 µm (Z).

  Part of: 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