Staurosirella manoyloviana Van de Vijver, Jüttner & D.M.Williams sp. nov., SEM micrographs taken from the type material (ANSP G.C 100049b, Willow Creek, United States). A. SEM view of a frustule in girdle view. B. SEM view of the valvocopula with the fimbriate extensions. C–D. SEM external view of two complete valves. E. SEM internal view of a complete valve. Scale bar = 10 µm (C–E), 5 µm (A–B).