Trochomorpha paviei (Morlet, 1885)

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

Trochomorpha paviei (Morlet, 1885) Figs 4C , 10A

Helix paviei Morlet, 1885[1884]: 386, 387, pl. 11, fig. 1, 1a. Type locality: dans les forêts, entre Kampot et Phnom-Penh, particulièrement près des rapides de Kamchay ( rivière de Kampot), sur les bois pourris et les petite plantes [In forests, between Kampot and Phnom Penh, especially near the rapids Kamchay (Kampot River), on rotten wood and small plants].

Trochomorpha paviei : Inkhavilay et al. 2019: 72, figs 33a, b, 56a.

Material examined.

Locality no. 14: CUMZ-CM153 (3 specimens in ethanol). Locality no. 15: CMZ-CM162 (2 shells), CUMZ-CM163 (14 specimens in ethanol; Figs 4C , 10A ), CUMZ-CM164 (6 specimens in ethanol). The snails were found to live on tree trunks and on the ground among leaf litter.

Distribution.

Cambodia, Laos and Vietnam ( Schileyko 2011, Inkhavilay et al. 2019).

Remarks.

This species was originally described from "Dans les forêts, entre Kampot et Phnom-Penh". The unique characters are a depressed conic shell (shell width 12 mm) with a very strong and sharp peripheral keel, and a widely opened and deep umbilicus. The shell surface has thin and regular radial ridges, and very thin spiral ridges. Based on shell morphology, T. paviei closely resembles T. saigonensis (Crosse, 1867) that was described from "Poulo-Condor and Saigon, Cochinchine". The latter species is slightly smaller (shell width 11 mm), having the last whorl with a wide angled peripheral keel and being slightly convex below the periphery. The type specimens of both species were recently figured in Inkhavilay et al. (2019: fig. 33a, c). However, we hesitate to lump them together, as additional information is necessary to further confirm their status.

Figures

Figure 4. Living snails of A Haploptychius sp. B Quantula weinkauffiana (Crosse & Fischer, 1863) C Trochomorpha paviei (Morlet, 1885) D Cryptozona siamensis (Pfeiffer, 1856) E Hemiplecta distincta (Pfeiffer, 1850) F Cambodiparmarion doroshenkoi Kuznetsov & Kuzminykh, 1999 G Parmarion martensi Simroth, 1893 and H Durgella russeola (Morelet, 1865). All not to scale.

Figure 10. A Trochomorpha paviei (Morlet, 1885) B Trochomorpha sp. C Hemiplecta distincta (Pfeiffer, 1850) D Sarika sp. 1 E Sarika sp. 2 and F Sarika sp. 3.