Abdomen of Knoflachia kurilensis sp. nov.: female (A–C) and male (D) A epigastric region of female B epigyne C colular setae (arrow) and tracheal spiracle D socketed epiandrous spigots. Scale bars: 0.1 mm if not otherwise indicated. Abbreviations: BL – booklung covers; Gg – guiding groove; Lp – latero-posterior rim of epigyne; Oc – copulatory opening; Se – septum; Sl – lobe of spiracle opening.