FIGURES 8–5 in The genus Craspedostauros E.J.Cox (Bacillariophyta) on the coasts of Livingston Island, Maritime Antarctica

FIGURES 8–5. SEM images of Craspedostauros confusus sp. nov. from the type population (sample 14). 48. External valve view. 49. Close up of the central area with drop-like expanded central raphe endings and cribrate areolae. Note that areolae near the raphe are clearly larger than the others (arrow) and having one to three central pores. 50. Close up of the apex of the same valve with the hooked distal raphe ending and areolae around the apex. 51. External valve view, showing once again the hooked distal raphe endings and the enlarged areolae near the raphe. Scale bars = 5 μm (Figs 48, 51); 1 μm (Figs 49, 50).