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
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).