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

 
 
  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. https://doi.org/10.3897/zookeys.473.8659