Dicharax plectocheilus ( Benson, 1859 )

Páll-Gergely, Barna, Gojšina, Vukašin & Aravind, Neelavar Ananthram, 2025, A review of Chamalycaeus, Cycloryx and Dicharax species of the Himalaya and Myanmar and seven new species of Alycaeinae from the Blue Mountain, Mizoram, India (Gastropoda, Caenogastropoda, Cyclophoridae), European Journal of Taxonomy 1029, pp. 1-158 : 65

publication ID	https://doi.org/10.5852/ejt.2025.1029.3131
publication LSID	lsid:zoobank.org:pub:CF18E518-A00B-4411-A87C-EC96CF1C3CE7
persistent identifier	https://treatment.plazi.org/id/03CC1E69-A373-FF91-B90D-FE9CB54CFB57
treatment provided by	Plazi
scientific name	Dicharax plectocheilus ( Benson, 1859 )
status

Treatment

Dicharax plectocheilus ( Benson, 1859) View in CoL

Fig. 37A–D

Alycaeus plectocheilus Benson, 1859: 180 View in CoL .

Alycaeus plectocheilus View in CoL – Sowerby 1877: pl. 2, species 14. — Godwin-Austen 1914: 342–343, pl. 134

figs 4, 4a–c. Alycaeus ( Dicharax) plectochilus [sic] – Kobelt 1902: 375. — Gude 1921: 264–265. Alycaeus plectocheilus , large var. – Godwin-Austen 1914: 342–343, pl. 133 figs 3, 3a–c. Chamalycaeus ( Dicharax) plectochilus – Ramakrishna et al. 2010: 65. Dicharax plectocheilus – Páll-Gergely et al. 2017: 54. — Preece et al. 2022: 80, fig. 38e–f. —

Gittenberger et al. 2024: 214, figs 39–40, 43. Dicharax (?) plectocheilus – Páll-Gergely et al. 2020: 101.

Type material examined

INDIA • 2 syntypes ( Fig. 37A–D); Darjiling, Rungun Valley ; Blanford coll.; NHMUK 1906.4 About NHMUK .4.184 .

Type locality

“in valle Rungun”.

Differential diagnosis

There are two other species in this species group with smooth R2 surface: D. subdigitatus and D. tangmaiensis . The former has a larger shell, has a larger distance between the R3 swelling and the peristome, and less protruding peristomal projections; the latter is much larger than D. plectocheilus and has a less elevated R3 swelling. See also under D. digitatus .