Lagocheilus landesi (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

Lagocheilus landesi (Morlet, 1885) Figs 3B , 6F

Cyclophorus landesi Morlet, 1885[1884]: 392, 393, pl. 11, fig. 5, 5a. Type locality: extrémité de la chaîne de ľÉléphant, non loin de la mer [Preah Monivong Bokor National Park, Kampot Province, Cambodia].

Cyclophorus laudesi [sic]: Fischer 1973a: 47.

Lagocheilus landesi : Inkhavilay et al. 2019: 20, fig. 9d.

Material examined.

Locality no. 11: CUMZ-CM080 (4 shells; Fig. 6F ), CUMZ-CM082 (1 specimen in ethanol). Locality no. 12: CUMZ-CM104 (4 shells). Locality no. 14: CUMZ-CM152 (2 specimens in ethanol; Fig. 3B ). The snails were found to live on tree trunks and leaves.

Distribution.

Cambodia and Laos ( Inkhavilay et al. 2019).

Remarks.

This species was originally described from "Elephant Mountains" [Preah Monivong Bokor National Park, Kampot Province]. Both empty shells and living snails were collected from Preah Monivong Bokor National Park showing similar characteristics with the original description and illustration.

Living snails are typical of cyclophorids with a blackish soft body. The shell surface is furnished with thick and regular periostracal hairs. There are three rows of periostracal hairs on the upper periphery and several rows of short periostracal hairs below the periphery. The periostracum usually disappears in old and worn specimens. The species has a conic shell, an aperture thickened (not expanded), and the thick calcareous, multi-spiral and plate-like operculum characteristic of Lagocheilus .

Figures

Figure 3. Living snails of A Lagocheilus klobukowskii (Morlet, 1885) B Lagocheilus landesi (Morlet, 1885) C Pupina crosseana Morlet, 1883 D Valiguna siamensis (Martens, 1867) E, F Valiguna sp. E notum or dorsal view and F hyponotum or ventral view G Succinea tenuis Morelet, 1865 and H Hypselostoma cambodjense Benthem Jutting, 1962. All not to scale.

Figure 6. A Georissa monterosatiana Godwin-Austen & Neville, 1879 B Georissa carinata Sutcharit & Jirapatrasilp, sp. nov. C Cyclophorus amoenus (Pfeiffer, 1854) D Cyclophorus paviei Morlet, 1885 E Opisthoporus bernardii (Pfeiffer, 1862) and F Lagocheilus landesi (Morlet, 1885).