Stomacosmethis altispirus ( Moellendorff , 1902)

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

Stomacosmethis altispirus ( Moellendorff, 1902)

Alycaeus perakensis altispirus Möllendorff, 1902: 144-145.

Alycaeus (Alycaeus) perakensis altispirus - Zilch 1957: 147, pl. 6, fig. 32.

Alycaeus altispirus - Foon and Liew 2017: 21-23, figs 7A, B, 10, 31A.

Type locality.

"Kelantan, Ostküste der Halbinsel Malacca" (from the title).

Material examined.

Malakka, Kelantan, coll. Möllendorff, SMF 109738 (lectotype, designated by Zilch 1957).

Remarks.

Protoconch very finely granulated, without spiral lines; R1 with irregular, low ribs and very weak spiral striation in-between, approximately same strength; R2 very short, with darker thick and fewer than ten lighter narrower stripes very slightly elevated from the surface.

This taxon was described as a subspecies of A. perakensis . We agree with Foon and Liew (2017) that it should be handled as a species due to the characteristic flat whorls and expanded peristome.