Sarika ochtogyra ( Moellendorff , 1902)

Pholyotha, Arthit, Sutcharit, Chirasak, Tongkerd, Piyoros & Panha, Somsak, 2020, Integrative taxonomic revision of the land snail genus Sarika Godwin-Austen, 1907 in Thailand, with descriptions of nine new species (Eupulmonata, Ariophantidae), ZooKeys 976, pp. 1-100 : 1

Sarika ochtogyra ( Moellendorff, 1902) Fig. 50E

Macrochlamys ochtogyra Möllendorff 1902: 154, 155. Type locality: “Bangkok”; Hemmen and Hemmen 2001: 44.

Type material.

Syntype SMF 227103/1 (one shell; Fig. 50E ) from Siam: Bangkok.

Diagnosis.

Shell depressed, large to very large size (shell width up to 31.8 mm, shell height up to 16.0 mm) and thin. Shell surface rather smooth surface with obvious growth lines; shell colour yellowish brown. Whorls 8, increasing regularly; body whorl large and obtusely angulated. Spire high-conical; suture impressed. Aperture crescent-shaped and obliquely opened. Peristome simple. Columellar margin simple. Umbilicus narrowly opened (Fig. 50E ).

Remarks.

Compared to the species with shell width greater than 30 mm, S. ochtogyra can be distinguished from S. rex by having eight whorls and obtusely angulated periphery, while S. rex has seven whorls and rounded periphery.

Sarika ochtogyra is currently known only from the type locality in Thailand. Originally, it was described based on a collection made by the butterfly collector, H. Frühstorfer ( Lamas 2005). The type locality "Siam: Bangkok" is probably not the location where the type specimen was collected. After surveys throughout Thailand, we could find neither Sarika nor Macrochlamys with large shell sizes that match well with the type specimen.

Figures

Figure 50. Shells of Sarika spp. A, B Sarika gratesi sp. nov. A holotype CUMZ 7275 and B paratype CUMZ 7276 C, D S. pumicata syntype NHMUK 1893.2.4.980 - 981 E S. ochtogyra holotype SMF 227103 / 1 F S. benoiti modified from Crosse and Fischer (1863) G S. rex modified from Preston (1909).