Dicharax digitatus
Authors/Creators
- 1. Centre for Agricultural Research, HUN-REN Centre for Agricultural Research, 2462 Martonvásár, Brunszvik u. 2, Hungary. & Department of Soil, Water and Natural Sciences, Albert Kázmér Faculty of Agricultural and Food Sciences of Széchenyi István University, Vár 2., 9200 Mosonmagyaróvár, Hungary.
- 2. Department of Morphology, Systematics and Phylogeny of Animals, Faculty of Biology, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia.
- 3. SM Sehgal Foundation Center for Biodiversity and Conservation, Ashoka Trust for Research in Ecology and the Environment (ATREE), Royal Enclave, Sriramapura, Jakkur PO., Bangalore 560064, India. & Manipal Academy for Higher Education, Madhav Nagar, Manipal 576104, India. & Yenepoya Research Center, University Road, Derlakatte, Mangalore, India.
Description
Dicharax digitatus (H.F. Blanford, 1871)
Fig. 34K–O
Alycaeus digitatus H.F. Blanford, 1871: 41–42, pl. 2 fig. 4.
Alycaeus (Dicharax) digitatus – Kobelt 1902: 369. — Gude 1921: 248.
Alycaeus digitatus – Godwin-Austen 1914: 339–340, pl. 134 figs 5, 5a.
Chamalycaeus (Dicharax) digitatus – Ramakrishna et al. 2010: 59.
Dicharax digitatus – Páll-Gergely et al. 2020: 59.
Diagnosis
The high and short R3 swelling, which is situated close to the outer peristome, the strongly fringed inner peristome, the large distance between the inner and outer peristomes, and the protruding finger-like projections on the inner peristome distinguish this species from all congeners.
Material examined
INDIA • 1 shell (probably not syntype, but figured by Godwin-Austen 1914; Fig. 34K–O); Rechila Pk, Sikkim; W. Robert leg.; NHMUK 1903.7.1.1253.
Type locality
“apud Darjeeling in vallo Rungno fluminis Himalayae Sikkimensis”.
Differential diagnosis
Other species of this species group may also have finger-like projections of the peristome (D. cucullatus, D. ochraceus, D. plectocheilus, D. tangmaiensis), but in those cases the outer peristome ‘follows’ the projections, while in D. digitatus the outer peristome stops at a single, straight line. See also under D. bicrenatus.
Notes
Files
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- NHMUK
- Material sample ID
- NHMUK 1903.7.1.1253
- Scientific name authorship
- H. F. Blanford
- Kingdom
- Animalia
- Phylum
- Mollusca
- Order
- Architaenioglossa
- Family
- Cyclophoridae
- Genus
- Dicharax
- Species
- digitatus
- Taxon rank
- species
- Type status
- syntype
- Taxonomic concept label
- Dicharax digitatus (Blanford, 1871) sec. Páll-Gergely, Gojšina & Aravind, 2025
References
- Blanford H. F. 1871. On some undescribed species of Camptoceras and other land shells. The Journal of the Asiatic Society of Bengal 40: 39-45. Available from https://www.biodiversitylibrary.org/page/35630849 [accessed 1 May 2025].
- Kobelt W. 1902. Das Tierreich. Eine Zusammenstellung und Kennzeichnung der rezenten Tierformen. In Verbindung mit der Deutschen Zoologischen Gesellschaft herausgegeben von der Koniglich Preussischen Akademie der Wissenschaften zu Berlin. Lfg 16. Mollusca: Cyclophoridae. R. Friedlander und Sohn, Berlin. Available from https://www.biodiversitylibrary.org/page/1000211 [accessed 1 May 2025].
- Gude G. K. 1921. The Fauna of British India including Ceylon and Burma. Mollusca. III. Land operculates (Cyclophoridae, Truncatellidae, Assimineidae, Helicinidae). Taylor and Francis, London. https://doi.org/10.5962/bhl.title.12890
- Ramakrishna, Mitra S. C. & Dey A. 2010. Annotated Checklist of Indian Land Molluscs. Zoological Survey of India, Kolkata. Available from http://faunaofindia.nic.in/PDFVolumes/occpapers/306/index.pdf [accessed 1 May 2025].
- Pall-Gergely B., Sajan S., Tripathy B., Meng K., Asami T. & Ablett J. D. 2020. Genus-level revision of the Alycaeidae (Gastropoda, Cyclophoroidea), with an annotated species catalogue. ZooKeys 981: 1-220. https://doi.org/10.3897/zookeys.981.53583