Parlibellus biblos (Cleve) Cox

Lobban, Christopher S. & Witkowski, Andrzej, 2023, Marine benthic diatoms of Guam: new records, Dictyoneis apapae sp. nov., and updates to the checklist, Micronesica 2023 (2), pp. 1-75 : 12

Parlibellus biblos (Cleve) Cox Figs 81–84

Ref. illus: Hustedt 1931 –1959, p. 703, fig. 1178 (as Stauroneis biblos [Cleve] Hustedt); Cox 1988, p. 23; Lobban et al. 2012, p. 296, pl. 52, figs 4, 5) [as Stauroneis retrostauron (Mann) Meister ]

Comments: J.S. Park et al. (2022, p. 14) made the case for recognizing this taxon as Parlibellus biblos . Stauroneis retrostauron must be deleted from the species list for Guam for now.

Figures

Figures 81–86. Parlibellus and Plagiogramma, SEM except Fig. 81. Figs 81–84. Parlibellus biblos. Fig. 81. Live cell showing plastids. Fig. 82. General view of portion of valve. Fig. 83. Detail of apex showing concentric circles of areolae around the raphe ending. Fig. 84. Detail of interior showing the stauros as a transverse bar not visible from outside. Figs 85, 86. Plagiogramma minor in girdle and valve view. Scale bars: Figs 81, 82 = 10 µm, Figs 84, 85, 86 = 5 µm, Fig. 83= 2 µm.