Inner walls of male reproductive organs of Gudeodiscus and Halongella gen. n. species. A–B penis of Halongella schlumbergeri (Morlet, 1886), 20071122D C penis of Halongella fruhstorferi (Möllendorff, 1901) (for locality see Figure 25) D epiphallus of Gudeodiscus fischeri (Gude, 1901), (for locality see Figure 18) E epiphallus of Gudeodiscus giardi giardi (Fischer, 1898), (for locality see Figure 19) F penial caecum of G. (G.) messageri raheemi Páll-Gergely & Hunyadi, ssp. n. (for locality see Figure 20) G penial caecum of G. (G.) messageri raheemi ssp. n. (for locality see Figure 28E) H epiphallus of H. schlumbergeri (for locality see Figure 26) I H. fruhstorferi, (for locality see Figure 25) J spermatophore of G. (G.) fischeri, (for locality see Figure 17). All photos by B. Páll-Gergely.

  Part of: Páll-Gergely B, Hunyadi A, Ablett J, Văn Lương H, Naggs F, Asami T (2015) Systematics of the family Plectopylidae in Vietnam with additional information on Chinese taxa (Gastropoda, Pulmonata, Stylommatophora). ZooKeys 473: 1-118.