Dicharax (?) tokunoshimanus principalis (Pilsbry & Y. Hirase, 1909)

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 (?) tokunoshimanus principalis (Pilsbry & Y. Hirase, 1909)

Alycaeus tokunoshimanus principalis Pilsbry & Y. Hirase, 1909a: 587.

Chamalycaeus tokunoshimanus - Azuma 1982: 9-10, pl. 3, fig. 28.

Chamalycaeus tokunoshimanus principalis - Minato 1988: 13.

Type locality.

"Ōgachi, Ōshima, ( Ōsumi)”.

Material examined.

ANSP 95830a (lectotype, designated by Baker 1964, photographs examined); 鹿児島縣 1奄美大島名瀬市平田町 (= Kagoshima-ken, Amami Oshima, Naze-shi, Hirata-cho = Kagoshima Prefecture, Amami Oshima, Naze City, Hirata Town), Sakurai coll., NSMT-Mo 79099 (3 shells).

Remarks.

Protoconch low and finely granulated, the last 0.25 of the protoconch whorl is finely wrinkled; R2 with ca. 34-40 low, blunt ribs; they are situated close to each other near tube, but probably do not form connections with each other; distance between ribs at the edge of body whorl ca. as wide as a rib width; R1 with extremely fine spiral lines between ribs (probably not homologous with the spiral striations in Metalycaeus species).