Dioryx messageri (Bavay & Dautzenberg, 1900)

Inkhavilay, Khamla, Sutcharit, Chirasak, Bantaowong, Ueangfa, Chanabun, Ratmanee, Siriwut, Warut, Srisonchai, Ruttapon, Pholyotha, Arthit, Jirapatrasilp, Parin & Panha, Somsak, 2019, Annotated checklist of the terrestrial molluscs from Laos (Mollusca, Gastropoda), ZooKeys 834, pp. 1-166 : 1

Dioryx messageri (Bavay & Dautzenberg, 1900)

Alycaeus (Dioryx) messageri Bavay & Dautzenberg, 1900b: 119. Type locality: That-Khe [That Khe Town, Trang Dinh District, Lang Son Province, Vietnam]. Bavay and Dautzenberg 1900a: 453, pl. 11, figs 7, 8.

Dioryx messageri : Kobelt 1902a: 339. Do et al. 2015: 118, 120, fig. 2b. Páll-Gergely et al. 2017b: 10, fig. 4b.

Material examined.

Syntype MNHN-IM-2000-31785 from “That-Khe” (1 shell; Fig. 6A). Specimen CUMZ from Tam Pou Kham Cave, Vangvieng District, Vientiane Province (Fig. 6B).

Distribution.

Vietnam ( Kobelt 1902a, Do et al. 2015).

Remarks.

This species has a shell morphology very similar to Dioryx bacca , except it has a relatively larger shell and a shorter sutural tube.