Reconstruction of the copulatory apparatus of species recorded for Chile. (A) G. canai; (B) G. chilla; (C) G. festae; (D) G. rincona; (E) R. patagonicus. Labels: bc = bursal canal, cb = copulatory bursa, cg = cement glands, ed = ejaculatory duct, go = gonopore, od = ovovitelline duct, pp = penis papilla, sd = sperm duct, se = false seminal vesicle, sg = shell glands, sv = seminal vesicle, vd = vas deferens. Sketches redrawn based on publications (Marcus 1954; Curino and Cazzaniga 1993; Sluys 1996; Kawakatsu et al. 1984a; Sluys et al. 2005; others) and simplified to highlight the main differences between the species.