SEM graphs of the bulbs of Neoscona spasskyi (A–C) and N. isatis sp. nov. (D–F). A, C, D, F Prolateral B, E anterior. Abbreviations: Co conductor, Em embolus, La lamella, Ma median apophysis, Ms spur of median apophysis, Sm stipes of median apophysis, Ta terminal apophysis. Scale bars: 0.1 mm.