Trichocathaica rugosobasis (Pilsbry, 1934)

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 : 32-34

Trichocathaica rugosobasis (Pilsbry, 1934) Figure 11 D–F

Bradybaena (Trichocathaica) rugosobasis Pilsbry, 1934: 86: 12, plate 4, figs 6, 7.

Type examined.

Wenchwan to Maochow, Szechuan, China (W. China exp., Brooke Dolan, 24.04.1931), ANSP 159636 (holotype [photos examined] + 2 paratypes [not examined]).

Type locality.

"Between Wenchwan and Maochow, Szechuan, on rocks in the arid valley of the Min River, 3500-4100 ft. elevation".

Description

(based on photos of the holotype). Shell sinistral, spire slightly elevated, body whorl rounded with a very slight indication of a blunt keel; protoconch consists of 1.75 whorls, probably finely, irregularly wrinkled; entire shell with 5.75 whorls; teleoconch very roughly, irregularly wrinkled, with large hair scars, periostracal elements not visible; aperture subcircular, peristome slightly expanded, thin, sharp; inner thickening parallel to peristome seemingly normally developed, situated in some distance from peristome edge.

Measurements (in mm).

D = 14.3-15.0, H = 7.0-7.2 (n = 2, according to the original description).

Remarks.

This species is characterized by its medium-sized shell with rough radial sculpture. The holotype is somewhat corroded, and thus, the periostracal folds could not be examined.