Dicharax depressus (Bavay & Dautzenberg, 1912)

Pall-Gergely, Barna, Sajan, Sheikh, Tripathy, Basudev, Meng, Kaibaryer, Asami, Takahiro & Ablett, Jonathan D., 2020, Genus-level revision of the Alycaeidae (Gastropoda, Cyclophoroidea), with an annotated species catalogue, ZooKeys 981, pp. 1-220 : 1

Dicharax depressus (Bavay & Dautzenberg, 1912)

Alycaeus depressus Bavay & Dautzenberg, 1912: 51-52, pl. 4, figs 10-13.

Dicharax depressus - Páll-Gergely et al. 2017: 43-45, figs 12E, F, 13D, 28E-H, 29E, F, 31A-C; Inkhavilay et al. 2019: 14, fig. 5A.

Type locality.

"Pac-Kha, Tonkin"

Material examined.

Pac-Kha, leg. Messager, MNHN-IM-2000-27165 (1 syntype); for additional specimens see Páll-Gergely et al. (2017).

Remarks.

Protoconch low; R1 glossy with regular, dense ribs, which gradually transform to an irregularly ribbed section having widely spaced ribs at end of R1; ribs low and blunt on whole shell; R2 very densely ribbed, ribs curved towards aperture.

Shells of a single sample had some spiral striation, which is highly unusual in this genus ( Páll-Gergely et al. 2017)