Stomacosmethis perakensis (Crosse, 1879)

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

publication ID	https://dx.doi.org/10.3897/zookeys.981.53583
publication LSID	lsid:zoobank.org:pub:5194AAC8-6B8A-473F-8A41-470A60182A0B
persistent identifier	https://treatment.plazi.org/id/D7ADB90B-3558-5F80-B633-76EEFCB75DAD
treatment provided by	ZooKeys by Pensoft
scientific name	Stomacosmethis perakensis (Crosse, 1879)
status

Treatment

Alycaeus perakensis Crosse, 1879: 206-208, pl. 12, fig. 7.

Alycaeus (Orthalycaeus) perakensis - Möllendorff 1891: 342.

Alycaeus (Alycaeus) perakensis - Kobelt 1902: 348.

Alycaeus perakensis - Tielecke 1940: 345; Foon and Liew 2017: 56-59, figs 7S, 24, 31V.

Type locality.

"Buket Pondong, Perak".

Material examined.

Perak, Buket Pondong, MNHN-IM-2000-31793 (5 syntypes); Perak, NHMW 41007 (3 shells).

Remarks.

Protoconch glossy, without spiral lines; R1 with irregular, rather low ribs and very weak spiral striation in-between, but at the end of the region the ribs are more elevated, sharp; R2 very short, with alternating darker/thicker and lighter/narrower stripes which are somewhat elevated from the surface.

Stomacosmethis roebeleni may be a subspecies of A. perakensis although we refrain from treating it as such without further evaluation.