Alycaeus pyramidalis Benson, 1856

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/652C7B44-50B6-553A-A4BE-0E24E621F6EC
treatment provided by	ZooKeys by Pensoft (2020-10-29 22:48:38, last updated 2024-11-25 21:42:09)
scientific name	Alycaeus pyramidalis Benson, 1856
status

Treatment

Alycaeus pyramidalis Benson, 1856: 225.

Alycaeus pyramidalis - Reeve 1878: pl. 1, species 6; Godwin-Austen 1914: 427, pl. 156, figs 6, 6a; Gude 1921: 216.

Alycaeus (Alycaeus) pyramidalis - Kobelt 1902: 348-349.

Type locality.

"ad collem Therabuin, vallis Tenasserim".

Material examined.

Therabuin of Therapen (?) hill in Tenasserim, NHMUK 1888.12.4.937-938 (2 possible syntypes); No locality data, UMZC I.102830 (2 possible syntypes).

Remarks.

The two syntypes in the NHM and one of the shells from Cambridge were weathered. The third shell from Cambridge is in a good state, and its sculpture could be examined. Protoconch without particular sculpture, rather matte; R1 with low, irregular growth ridges; R2 relatively short, but much longer than typical in Stomacosmethis , the surface is irregularly wrinkled, and possibly ribbed near the suture.

Habe’s (1965) record of this species from "Khao Chong, Trang Province, peninsular Thailand" refers to Alycaeus gibbosulus .

References

Gude, GK, 1921. The Fauna of British India including Ceylon and Burma. Mollusca. III. Land operculates (Cyclophoridae, Truncatellidae, Assimineidae, Helicinidae). Taylor and Francis, London, DOI: https://doi.org/10.5962/bhl.title.12890

Habe, T, 1965. Operculated land molluscs from Southeast Asia. Nature and life in southeast Asia 4: 111 - 128

Kobelt, W, 1902. Das Tierreich. Eine Zusammenstellung und Kennzeichnung der rezenten Tierformen. In Verbindung mit der Deutschen Zoologischen Gesellschaft herausgegeben von der Koeniglich Preussischen Akademie der Wissenschaften zu Berlin. Mollusca: Cyclophoridae. R. Friedlaender und Sohn, Berlin, https://biodiversitylibrary.org/page/1000211

Reeve, LA, 1878. Monograph of the genus Alycaeus. In: Reeve LA (Ed.) Conchologica Iconica: or, Illustrations of the Shells of Molluscous Animals. Reeve and Co., London, 20: 13 pp. [+ 6 pls] https://www.biodiversitylibrary.org/page/8230573