Trichocathaica puteolata Pall-Gergely

Pall-Gergely, Barna, unyadi, Andras & Asami, Takahiro, 2018, Enantiomorphs and taxonomy of three conchological species in flat-shelled snails Trichocathaica (Pulmonata, Camaenidae), ZooKeys 810, pp. 19-44 : 32

Trichocathaica puteolata Pall-Gergely sp. n. Figure 11 A–C

Laeocathaica (Trichocathaica) lyonsae - Wenz 1960: 639, fig. 2235.

Material examined.

China, Sytschuan, “Hügel bei der Fähre aus Ta Tu Ho bei %" (one side of the label), "Fulin Ton boden, Maisfelden, 31.07.1930" (other side of the label), SMF 24666a/1 (holotype, orig. Handb. Pal. 2235); same data, SMF 349516/61 shells (most of them are juveniles); same data, SMF 349514/1 paratype shell (orig. Yen, 1939: plate 15, fig. 43); China, Sytschuan, Osthang des Lu-ho (=Ta Tu-Ho), s. Lu Tin Chouw (?), ex coll. K. Krejci-Graf, 04,08,1930 (1933), SMF 24665/15 (most of them are juveniles).

Diagnosis.

Shell large, sinistral, body whorl keeled above mid-part of body whorl, teleoconch roughly wrinkled with moderately large, slender periostracal folds, fold scars represented as deep pits.

Description.

Shell sinistral, spire very slightly elevated in most specimens (dorsal side nearly flattened), but in some shells dorsal surface domed; body whorl slightly keeled, keel situated above mid part of body whorl; protoconch consists of 1.25-1.75 whorls, finely, irregularly wrinkled; entire shell with 4.5-5.5 whorls; teleoconch roughly, irregularly wrinkled, with moderately large, slender triangular, sometimes cylindrical, hair-like periostracal folds having short, curved base; in specimens/shell parts without periostracum the base of folds visible as deep fold scars; aperture subcircular, peristome slightly expanded, thin, sharp; inner thickening parallel to the peristome weak.

Measurements (in mm).

D = 15.7-22.8, H = 7.5-11.4 (n = 6).

Differential diagnosis.

The shell of T. rugosobasis is similar to that of T. puteolata sp. n. but smaller with the narrower umbilicus, less keeled body whorl, and stronger radial sculpture.

Etymology.

The Latin puteolata (= pitted) refers to the pitted surface of the shells.

Distribution.

This species is known only from the valley of the Dadu River.

Remarks.

All shells we examined in the SMF were labelled as T. lyonsae .