Luticola celebesica Levkov, Metzeltin & Pavlov

Rybak, Mateusz, Witkowski, Andrzej, Peszek, Lukasz, Kociolek, John P., Risjani, Yenny, Nguyen, Duc Hung, Zhang, Jinpeng, Yunianta,, Nguyen, Van Duy, Gastineau, Romain, Duong, Thi Thuy, Rosa, Philippe & Meleder, Vona, 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, pp. 115-142 : 115

Luticola celebesica Levkov, Metzeltin & Pavlov

Figure 7

Description LM.

Valves elliptic to rhombic-elliptic with rounded apices, 10.6-27.1 μm in length, 7.3-13.1 μm in width (n = 9). Axial area broad, clearly expanded near central area, asymmetrical bordered by shortened striae, composed of 2-3 areolae while on opposite site of a single areola. Raphe branches straight with hooked distal raphe endings and proximal endings deflected to site opposite to stigma. Transapical striae easily distinguishable, radiate, 17-19 in 10 μm. Slit-shaped stigma located close to valve margin.

Distribution.

This is a very rare species, observed only in sample SZCZ26505 from Rú Chá Mangrove mud flat in Hue, the western South China Sea coast, Central Vietnam. Due to the rare occurrence of this species, a detailed description of valve ultrastructure was impossible up until the present.

Figures

Figure 7. LM micrographs of Luticola celebesica Levkov, Metzeltin & Pavlov in size diminution series (A-G). Scale bar: 10 µm.