Hypselostoma benetuitum Vermeulen et al., 2019

Sutcharit, Chirasak, Thach, Phanara, Chhuoy, Samol, Ngor, Peng Bun, Jeratthitikul, Ekgachai, Siriwut, Warut, Srisonchai, Ruttapon, Ng, Ting Hui, Pholyotha, Arthit, Jirapatrasilp, Parin & Panha, Somsak, 2020, Annotated checklist of the land snail fauna from southern Cambodia (Mollusca, Gastropoda), ZooKeys 948, pp. 1-46 : 1

Hypselostoma benetuitum Vermeulen et al., 2019 Fig. 7E, F

Hypselostoma benetuitum Vermeulen et al., 2019b: 32, 33, figs 64, 65. Type locality: Phnom Kampong Trach, Kampong Trach area, Kampot Province, Cambodia.

Material examined.

Locality no. 11: CUMZ-CM061 (6 shells; Fig. 7E ). Locality no. 17: CUMZ-CM081 (19 shells; Fig. 7F ). The snails were found to live on limestone wall syntopically with Georissa spp.

Distribution.

Kampong Trach area, Kampot Province, Cambodia ( Vermeulen et al. 2019b).

Remarks.

The specimens from the type locality (locality no. 11; Fig. 7E ) agree well with the drawing by Vermeulen et al. (2019b). This species tends to have a much smaller shell size and be less abundant than the syntopic congener H. cambodjense Benthem Jutting, 1962.

The specimens from locality no. 17 (Fig. 7F ) could be identified to this species by having a smaller size than another congener, H. cambodjense . However, they differ slightly from the typical form in having less distinct peripheral ridges on the last whorl, while the protoconch, shell sculpture and major lamellae are identical to the topotype. Therefore, we consider these specimens to come within intraspecific variation.

Figures

Figure 7. A, B Lagocheilus klobukowskii (Morlet, 1885) A yellowish morph and B purplish-black morph C Pupina crosseana Morlet, 1883 D Succinea tenuis Morelet, 1865 and E, F Hypselostoma benetuitum Vermeulen et al., 2019 E from locality no. 11 (type locality) and F from locality no. 17.