Gonopods of Tridactylogonus species. A T. obscurus holotype (after Jeekel 1982) B, D T. rugosissimus holotype (after Jeekel 2002) C, E T. warrenbenensis sp. n. paratype (ex SAM OM2185-OM2194) A–C medial views of right gonopod D, E anterior and anterior and slightly medial views, respectively D originally of left gonopod telopodite, here right-left reversed for comparison with right gonopod in E. Dashed line in C and E marks the prostatic groove. Drawings not to scale.