Dicharax (?) umbonalis (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/EEB0F0E7-14DE-5345-8932-0ED0B2ABD0B8
treatment provided by	ZooKeys by Pensoft (2020-10-29 22:48:38, last updated 2024-11-25 21:42:09)
scientific name	Dicharax (?) umbonalis (Benson, 1856)
status

Treatment

Alycaeus umbonalis Benson, 1856: 225-226.

Alycaeus umbonalis - Reeve 1878: pl. 4, species 36; Godwin-Austen 1886: 194-195, pl. 44, figs 2, 2a-c; Godwin-Austen 1914: 413, 424.

Alycaeus (Chamalycaeus) umbonalis - Kobelt 1902: 364; Gude 1921: 235-236.

Type locality.

"ad Akaouktong, prope ripas fluvii Irawadi".

Material examined.

Burmah, UMZC I.103005 (3 syntypes); Akoutong, Burma, Blanford coll., NHMUK (5 shells).

Remarks.

Protoconch low, no spiral lines visible; R1 with rather regular ribs and without spiral striation; R2 long, with widely spaced, ribs lamella-like, straight, but relatively low (typical Chamalycaeus character).

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

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