Chamalycaeus sylheticus (Godwin-Austen, 1914)

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 : 29

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-A32F-FFCD-BACF-FEECB7FBFBC1
treatment provided by	Plazi
scientific name	Chamalycaeus sylheticus (Godwin-Austen, 1914)
status

Treatment

Fig. 13F–I

Alycaeus sylheticus Godwin-Austen, 1914: 382 View in CoL , pl. 154 figs 4, 4a.

Alycaeus sylheticus View in CoL – Gude 1921: 220.

Dicharax sylheticus View in CoL – Páll-Gergely et al. 2020: 74 View Cited Treatment ; 2021: 23, fig. 16.

Type material examined

BANGLADESH • holotype (single shell mentioned in the original description: Fig. 13F–I); S Sylhet Hills; W. Channel leg.; NHMUK 1903.7 About NHMUK .1.55 .

Type locality

“South Sylhet Hills”.

Differential diagnosis

The most similar species is C. solidus in terms of shell shape and sculpture, but that species is slightly larger, has a more elevated spire, and a more bulging R3 swelling.

Remarks

This species was included in the genus Dicharax in spite of the presence of spiral striation, because the R2 ribs were typical of that genus ( Páll-Gergely et al. 2020). However, the critical revision of Himalayan species of Chamalycaeus and Dicharax revealed that C. sylheticus belongs to this species group of Chamalycaeus due to other conchological traits (colourless shells, strong and widely-spaced R1 ribs, upper apertural notch).

Kingdom	Animalia
Phylum	Mollusca
Class	Gastropoda
Order	Architaenioglossa
Family	Alycaeidae
Genus	Chamalycaeus