Synlophes at mid-body of the genera treated in this work. Type-species. (A) Odilia (O. mackerrasae), male. (B) Hasegawanema n. gen. (Hasegawanema mamasaense n. comb), female. C, Hughjonestrongylus (H. ennisae), female. (D) Chisholmia n. gen. (Chisholmia bainae n. comb.), male. (E) Lesleyella n. gen. (Lesleyella wauensis n. comb.), female. (F) Sanduanensis n. gen. (Sanduanensis dividua n. comb.), female. (G) Parasabanema (P. szalayi), male. (H) Equilophos n. gen. (Equilophos polyrhabdote n. comb.), female. Abbreviations: 1, 1’, 2’, 3’: ridges 1, 1’, 2’, 3’; AO: axis of orientation of the ridges; c: careen; G: gap; lr: left ridge; n: last dorsal ridge; n’: last ventral ridge; rr: right ridge. A, H, modified from [5]. B, modified from [16]. C, G, modified from [26]. D, modified from [1]. E, modified from [20]. F, modified from [25]. Scale-bars: 50 mm.