Posterior end of male Gordius chiashanus sp. nov. A stereomicroscopic image of the posterior end B–D SEM images of (B) overview of the posterior end with bristles concentrated on the (C) lobe tips (arrow), and (D) inner side of the lobe tips and the formation of a bristle field on each tail lobe posterior to the tips of the postcloacal crescent (arrows) E cloacal opening with areoles on the inside wall. Scale bars: 1 mm (A), 500 μm (B), 200 μm (C–D), 50 μm (E).