Svaniulus ryvkini gen. nov., sp. nov., ♂ holotype (A–C) and ♀ paratype (D) A hypoproct, ventral view B right flange of pleurotergum 7, ventro-lateral view C penis, caudal view D left vulva, mesal view (setae omitted). Scale bars: 0.1 mm. Abbreviations: ca. central ampulla, ct central tube, pa posterior ampulla, pt posterior tube.