Gudeodiscus messageri messageri

Figure 5.Shells of Vietnamese Gudeodiscus species. A Gudeodiscus (Gudeodiscus) phlyarius (Mabille, 1887) (typical “fallax var. major”), MNHN-IM-2012-2155 B Gudeodiscus (Gudeodiscus) phlyarius, NHMUK 1922.8.29.55 (holotype of Plectopylis verecunda) C Gudeodiscus (Gudeodiscus) phlyarius, NHMUK 1922.8.29.58 (holotype of Plectopylis fallax) D Gudeodiscus (Gudeodiscus) messageri raheemi Páll-Gergely & Hunyadi, ssp. n., Vn10-76, coll. PGB E Gudeodiscus (Gudeodiscus) messageri raheemi ssp. n., NHMUK 20110370.1 (holotype) F Gudeodiscus (Gudeodiscus) messageri messageri (Gude, 1909), NHMUK 1922.8.29.53 (holotype) G Gudeodiscus (Gudeodiscus) messageri messageri NHMUK 1922.8.29.54 (syntype of Plectopylis messageri var. minor). Photos: B. Páll-Gergely (A, D), H. Taylor (B–C, E–G). Scale represents 10 mm.

Figure 9.Shells (A–B) and apertural views (C–R) of Vietnamese Gudeodiscus, Sicradiscus and Halongella gen. n. species. A Gudeodiscus (Gudeodiscus?) suprafilaris (Gude, 1908), MNHN 24586 (holotype?) B Gudeodiscus (Gudeodiscus?) suprafilaris, 2011/81 C Gudeodiscus (Gudeodiscus) phlyarius (Mabille, 1887), Vn11-156 D Gudeodiscus (Gudeodiscus) phlyarius (Mabille, 1887) (typical “anterides/gouldingi”), MNHN-IM-2012-2164 E Gudeodiscus (Gudeodiscus) messageri messageri (Gude, 1909), MNHN-IM-2012-2215 F Gudeodiscus (Gudeodiscus?) hemmeni Páll-Gergely & Hunyadi, sp. n., Vn10-103A G Gudeodiscus (Gudeodiscus?) anceyi (Gude, 1901), GS22 H Sicradiscus mansuyi (Gude, 1908), 20081116C I Gudeodiscus (Gudeodiscus) giardi giardi (Fischer, 1898), 2011/81 J Gudeodiscus (Gudeodiscus) villedaryi (Ancey, 1888), Vn11-151 K–L Gudeodiscus (Gudeodiscus) dautzenbergi (Gude, 1901), Vn10-44 M–N Halongella schlumbergeri (Morlet, 1886), MAA3 O Halongella fruhstorferi (Möllendorff, 1901), Vn11-171 P Gudeodiscus (Gudeodiscus) fischeri (Gude, 1901), Vn10-120 Q Gudeodiscus (Gudeodiscus) fischeri (Gude, 1901), 20090515C R Gudeodiscus (Gudeodiscus?) suprafilaris (Gude, 1908), 2011/81. All photos by B. Páll-Gergely except for Figure 9A (T. Deli). Scale represents 10 mm and refers to A and B.

Figure 12.Parietal (A, C, E, G–K, M, N, P–S, U, W) and palatal (B, D, F, L, P, T, V, X) plicae and lamellae of Gudeodiscus species. A–M Gudeodiscus (Gudeodiscus) phlyarius (Mabille, 1887) A–B Plectopylis phlyaria (after Gude 1901c) C–D Plectopylis moellendorffi (after Gude 1901c) E–F Vn10-49, G Vn09-24 H Vn10-56, I Vn9-16, spec.1 J Vn9-16, spec.2 K–M Plectopylis verecunda, MNHN 2012-2177 (3 different specimens) N–Q Gudeodiscus (Gudeodiscus) messageri messageri (Gude, 1909) N–O Plectopylis messageri (after Gude 1909) P MNHN-IM-2012-2162, Q MNHN-IM-2012-2165 R–V Gudeodiscus (Gudeodiscus) messageri raheemi ssp. n, R 20071116C, spec.1. S–T 20071116C, spec.2. U–V 20080509C W–X Vn10-104B. Inner views: B, D, F, O; Outer views: L, T, V, X.

Figure 43.Distribution of Gudeodiscus Páll-Gergely, 2013 species. Legends: filled triangle, top down: typical Gudeodiscus (Gudeodiscus) phlyarius (Mabille, 1887), filled triangle, top up: “Gudeodiscus phlyarius werneri Páll-Gergely, 2013” (synonym of phlyarius); empty triangle, top up: Gudeodiscus (Gudeodiscus) phlyarius populations showing transitional characters towards werneri in terms of shell shape; empty triangle, top down: atypical Gudeodiscus (Gudeodiscus) phlyarius; empty circle: Gudeodiscus messageri raheemi ssp. n., filled circle: Gudeodiscus (Gudeodiscus?) hemmeni sp. n. (in all localities it co-occurs with Gudeodiscus (Gudeodiscus) messageri raheemi ssp. n.); circle with filled triangle in the middle: co-occurrence of Gudeodiscus (Gudeodiscus) messageri raheemi ssp. n. and atypical Gudeodiscus (Gudeodiscus) phlyarius. The shaded area indicates the area inhabited by Gudeodiscus (Gudeodiscus) messageri messageri (Gude, 1909) and “anterides”, “fallax” and “gouldingi”-like populations of Gudeodiscus (Gudeodiscus) phlyarius. Filled square indicates the position of Phong-Tho, the type locality of Plectopylis verecunda Gude, 1909 (synonym of Gudeodiscus phlyarius). Numbers 1–3 refer to atypical populations assigned to Gudeodiscus (Gudeodiscus) phlyarius. For explanation, see text.