Photomicrographs of Mononchus sp. females: A body, total view B–D anterior region (ventro-sublateral ribs arrowed in C; amphid opening arrowed in D) E vulval opening, subventral view F, G Pars refringens vaginae (small spots next to it arrowed in F) H reproductive system I tail tip J tail K sphincter of the oviduct-uterus junction (arrow). Scale bars: 400 µm (A); 20 µm (B–G, I, K); 50 µm (H, J).