Paracatenula porostriata Luthfi, Witkowski & M.Rybak, sp. nov. SEM images of internal view A valve with protracted apices B valve with linear grooves (Latin sulcus, plural sulci) on apices area (black arrowhead, also on A–E) C valve view showing occluded areola on ventral and dorsal valve mantel D, E internal apical raphe end bent and ending with indistinct helictoglossa.

 
 
  Part of: Luthfi OM, Arsad S, Kryk A, Risjani Y, Yunianta, Rybak M, Peszek Ł, Wróbel RJ, Pappas JL, Bąk M, Witkowski A (2024) New genera and new species of Catenulaceae (Bacillariophyta) from Coral Reef habitat of two Indonesia islands—Bawean and Sulawesi—A morphological approach. PhytoKeys 248: 263-291. https://doi.org/10.3897/phytokeys.248.131839