Dicharax nitidus
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 nitidus (W.T. Blanford, 1862)
Fig. 55
Alycaeus nitidus W.T. Blanford, 1862: 141.
Alycaeus kurzianus Theobald & Stoliczka, 1872: 330, pl. 11 fig. 2. Syn. nov.
Alycaeus kurzianus – Sowerby 1877: pl. 3, species 22. — Godwin-Austen 1914: 409–410, pl. 151 figs 7, 7a.
Alycaeus nitidus – Sowerby 1877: pl. 3, species 25. — Godwin-Austen 1914: 421–422, pl. 151 figs 4, 4a.
Alycaeus (Chamalycaeus) nitidus – Kobelt 1902: 360. — Gude 1921: 230–231.
Alycaeus (Dicharax) kurzianus – Kobelt 1902: 373. — Gude 1921: 258–259.
Chamalycaeus (Chamalycaeus) nitidus – Ramakrishna et al. 2010: 54.
Dicharax nitidus – Páll-Gergely et al. 2020: 68.
Dicharax (?) kurzianus – Páll-Gergely et al. 2020: 90, fig. 91.
Type material examined
MYANMAR • 3 possible syntypes of A. nitidus (Fig. 55A–E); Manya Khyoung, Arakan; Blanford coll.; NHMUK 1906.4.4.54 • 3 probable syntypes of A. kurzianus (labelled as “ kurtzianus ”; the locality does not match with the original description, but the specimens are identical to the figured one) (Fig. 55F–J); Nr. Prome, Pegu; F. Stoliczka leg.; NHMUK 1903.7.1.2700 • 1 syntype of A. kurzianus; Nattoung, Prome; W. Theobald coll.; NZSI M.24974 • 6 syntypes of A. kurzianus; same data as for preceding; NZSI M.25021.
Type localities
“prope Tongoop in Arakan ” (A. nitidus); “Nattoung in provincia Barmana, Prome dicta” (A. kurzianus).
Differential diagnosis
The most similar species due to the tiny, glossy shell and the short R2 is D. habiangensis, which has a larger R3 swelling and a basally rounded aperture. See also under D. semivivus sp. nov.
Remarks
Dicharax nitidus and D. kurzianus agree in all important traits (shell and aperture shape, shell size, length of shell regions, sculpture), and no notable difference was found between them. Therefore, D. kurzianus is a junior synonym of D. nitidus. The two species were not compared in the original description of D. kurzianus.
Dicharax nitidus was described from Tongoop (Taungup Pass at 18°40.1′ N, 94°44.5′ E), whereas D. kurzianus from Nattoung, which could not be located on the map. According to the additional information about Nattung, it is in “Mendon District, Pegu ”, and close to Prome (= Pyay). A mountain with the name “Nattaung” is located at 18°48.6′ N, 97°2.2′ E, ca 190 km east from Pyay, therefore it is probably not the same as Nattung. Nevertheless, the Taungup Pass and Pyay are situated geographically close to each other.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- NHMUK , NZSI
- Material sample ID
- M.24974 , M.25021 , NHMUK 1903.7.1.2700 , NHMUK 1906.4.4.54
- Scientific name authorship
- W. T. Blanford
- Kingdom
- Animalia
- Phylum
- Mollusca
- Order
- Architaenioglossa
- Family
- Cyclophoridae
- Genus
- Dicharax
- Species
- nitidus
- Taxon rank
- species
- Type status
- syntype
- Taxonomic concept label
- Dicharax nitidus (Blanford, 1862) sec. Páll-Gergely, Gojšina & Aravind, 2025
References
- Blanford W. T. 1862. Contributions to Indian Malacology, No. III. Descriptions of new operculated landshells from Pegu, Arakan and the Khasi Hills. Journal of the Asiatic Society of Bengal 31: 135-144. Available from https://www.biodiversitylibrary.org/page/56711841 [accessed 1 May 2025].
- Theobald W. & Stoliczka F. 1872. Notes on Barmese and Arakanese land shells, with descriptions of a few species. Journal of the Asiatic Society of Bengal 41 (2): 329-334. Available from https://www.biodiversitylibrary.org/page/37138045 [accessed 1 May 2025].
- Sowerby G. B. II 1877. Monograph of the genus Alycaeus. In: Conchologia iconica, or Illustrations of the Shells of Molluscous Animals Vol. 20: pls 1-6 and unpaginated text. L. A. Reeve, London. https://doi.org/10.5962/bhl.title.8129
- 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