Amphidromus givenchyi Geret, 1912

Amphidromus givenchyi Geret, 1912: 55, 56, pl. 2, figs 21, 22. Type locality: unknown. Laidlaw and Solem 1961: 526, 621.

Amphidromus (Amphidromus) givenchyi: Sutcharit and Panha 2006: 26-28, figs 4 n–q, 18, 19. Inkhavilay et al. 2017: 14-15, figs 2c, 3c, 4i.

Amphidromus richgoldbergi Thach & Huber in Thach, 2017: 45, figs 505-508. Type locality: Vang Vieng, Ventiane Province, Central Laos [Vangvieng District, Vientiane Province, Laos]. New synonym.

Material examined.

Holotype of "richgoldbergi Thach & Huber, 2017" FMNH 381986 (Fig. 43E). Specimens CUMZ 7015 (Fig. 43D) from Tad Lor waterfall, Salavan District, Salavan Province.

Distribution.

Laos and Thailand (Sutcharit and Panha 2006, Inkhavilay et al. 2017).

Remarks.

Amphidromus richgoldbergi Thach & Huber, 2017 has a dextral shell, yellowish-green periostracum and a brownish spot on the apex (Thach 2017). These characters are the intraspecific variations of A. givenchyi (Sutcharit and Panha 2006, Inkhavilay et al. 2017) rather than indicative of different biological species entities. Therefore, we recognised this name as a junior synonym of A. givenchyi .