Dicharax (?) abei (Kuroda, 1951)

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 (?) abei (Kuroda, 1951) Fig. 13B

Awalycaeus abei Kuroda, 1951: 73-74, text figs 1-3.

Awalycaeus abei - Kuroda and Abe 1980: 20; Minato 1982a: 121-123, fig. 4; Azuma 1982: 13, pl. 4, fig. 44; Hanshin Shell Club 1986: pl. 2, figs 7-9; Minato 1988: 17; Yano et al. 2016: 57, fig. 4C-a, b.

Type locality.

“徳島縣（阿讃境に近く）城壬山々頂附近” (Tokushima, [near the Sakai boundary], near the top of Mt. Jiyauwau).

Material examined.

Kito-son, Taira, Tokushima Pref., leg. Y. Koyama, 27.03.1975, NSMT-Mo 50125 (8 shells).

Remarks.

Holotype is deposited in the NC-H006 (Kazunori Hasegawa, pers. comm. 2015), and was not examined by us.

Protoconch low, rather matte, very finely granulated; R2 with 30-32 low, blunt, irregular ribs, which are usually in contact with each as they near the tube; at the edge of the body whorl they are distinct, the gap between them being slightly smaller than the width of a rib; no spiral lines visible on R1.

Figures

Figure 13. Type species of alycaeid genus-group taxa A Dicharax hebes (Benson, 1857) (SMF 109244; type species of Dicharax) B D. (?) abei (Kuroda, 1951) (NSMT 50125; type species of Awalycaeus) C D. (?) biexcisus (Pilsbry, 1902) (NSMT 263; type species of Cipangocharax) D D. (?) itonis (Kuroda, 1943) (NSMT 78866; type species of Sigmacharax). Close-up images of the aperture are not to scale. All photographs: Barna Pall-Gergely.