Catenula decusa Luthfi, Witkowski, Arsad & M.Rybak, sp. nov. A–Q light micrographs R–Y SEM images R, S, V external view T, U, W–Y internal view R external view of frustule with three cingula S external valve view with rectangular central area created by striation interruption in dorsal and ventral margin T, Y internal view of entire valve U valve with open unperforated girdle band V external view an arcuate raphe with simple proximal and apical end W straight raphe slit in internal valve view X rectangular central area with interrupted dorsal and ventral mantle striation. Scale bar: 10 µm (A–Q).