Dicharax (?) tadai (Kuroda & Kawamoto, 1956)

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 (?) tadai (Kuroda & Kawamoto, 1956)

Chamalycaeus tadai Kuroda & Kawamoto in Kawamoto & Tanabe, 1956: 13, 86, figs 11, 12.

Chamalycaeus tadai - Azuma 1982: 11-12, pl. 4, fig. 39; Hanshin Shell Club 1986: pl. 2, figs 1, 2; Minato 1988: 15.

Type locality.

"萩市見島, 日崎” (Hisaki, Mishima, Hagishi [Hagi City in Yamaguchi Prefecture]).

Material examined.

山口縣 1見島日崎 (Yamaguchi-ken, Mishima, Hizaki = Yamaguchi Prefecture, Mishima, Hizaki), Sakurai collection, NSMT-Mo 79098 (7 shells).

Remarks.

Protoconch low, very finely granulated; moderately glossy; R2 with 18-24 irregular, low, blunt ribs, connected to each other near tube and sometimes further away from tube (near edge of body whorl) also; distance between ribs at edge of body whorl usually ca. a rib width; no spiral lines visible on R1.

The authors (Kuroda and Kawamoto 1956) wrote the following: "Having lamellar plate in the form of spiral plates on the outer surface is a feature of the Metalycaeus group" (translated by J.U. Otani).