Dicharax (?) bifrons (Theobald, 1870)

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/46A3DFAD-1027-591F-89DB-2D09989F269C
treatment provided by	ZooKeys by Pensoft (2020-10-29 22:48:38, last updated 2024-11-25 21:42:09)
scientific name	Dicharax (?) bifrons (Theobald, 1870)
status

Treatment

Alycaeus bifrons Theobald, 1870: 396, pl. 18, fig. 1.

Alycaeus bifrons - Reeve 1878: pl. 6, species 48; Godwin-Austen 1914: 407, pl. 139, figs 3, 3a.

Alycaeus (Dicharax) bifrons - Kobelt 1902: 365-366; Gude 1921: 239.

Type locality.

"Shan States".

Material examined.

Shan States, NHMUK 1888.12.4.956-958 (3 syntypes).

Remarks.

Protoconch low, rather matte, no spiral lines visible; R1 irregularly wrinkled near the suture, this sculpture becomes stronger anteriorly, and near the end of R1 there are widely spaced, strong ribs, which extend not only to the suture area but to the edge of the body whorl; no signs of spiral striae visible on R1; R2 moderately long, with widely spaced, lamella-like, straight, rather low ribs.

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