Diplommatina silvicola Godwin-Austen, 1886

Budha, Prem B., Naggs, Fred & Backeljau, Thierry, 2017, The genus Diplommatina Benson, 1849 (Gastropoda: Caenogastropoda: Diplommatinidae) in Nepal, with the description of seven new species, European Journal of Taxonomy 337, pp. 1-30 : 20-22

publication ID	https://doi.org/10.5852/ejt.2017.337
publication LSID	lsid:zoobank.org:pub:2669CB69-5064-4B5D-AC25-856680E3B9AA
DOI	https://doi.org/10.5281/zenodo.3850712
persistent identifier	https://treatment.plazi.org/id/03C6CF41-FFF7-FFFE-FDA9-43A1D1E3FDA6
treatment provided by	Carolina (2020-05-18 19:40:19, last updated 2024-11-29 15:39:25)
scientific name	Diplommatina silvicola Godwin-Austen, 1886
status

Treatment

Diplommatina silvicola Godwin-Austen, 1886 View in CoL

Figs 8A View Fig , 9M View Fig

Diplommatina (Diplommatina) silvicola Godwin-Austen, 1886: 178 View in CoL .

Diplommatina (Diplommatina) silvicola View in CoL – Gude 1921: 335. — Ramakrishna et al. 2010: 92. — Budha et al. 2015: 7.

Diagnosis

Measurements (n = 7): SH 2.3–2.5 mm, SW 1.2–1.3 mm, Wh 6.0–6.5. Dextral, penultimate and body whorls nearly equal in width, constriction at the middle of the parietal lip above the aperture ( Fig. 9M View Fig ). One long parietalis ( Fig. 8A View Fig 3 View Fig ). One vertical palatalis. Horizontal palatalis absent ( Fig. 9M View Fig ). Columellaris prominent. Columellar tooth distinct. Protoconch smooth, Wh 1.5, with minute pits, radial ribs absent ( Fig. 8A View Fig 1 View Fig ). Teleoconch with strong, widely spaced radial ribs, about 4–6 ribs/ 0.5 mm on the penultimate whorl; 5–7 ribs/ 0.5 mm on the body whorl towards the aperture ( Fig. 8A View Fig 2 View Fig , A 4 View Fig ). Spiral striation distinct. Umbilicus closed. Aperture circular. Peristome usually simple, but with two lips in some adult shells; inner lip very thick and elevated. Columellar margin of the peristome straight. Parietal wall of aperture not extending to the body whorl.

Material examined

Possible syntype

INDIA: 1 shell, [ D. silvicola Godwin-Austen 1886 Jatinga Valley, N. Cachar , India. W.F. Webb, ex. coll. Godwin-Austen 06.07.1928] ( RBINS 525561, MT 1104).

Other material examined

NEPAL: 11 shells, Panitanki, Balaju, Kathmandu at the base of a sandstone hill, Shivapuri-Nagarjun National Park, 1356 m, 27.736501 N, 85.298484 E, 14 Apr. 2008, P.B. Budha leg. ( CDZMTU 050); 2 shells, Raniban, Balaju, Kathmandu, 1780–1820 m, 27.745997 N, 85.287240 E, 4 Jan. 2009, Srijanal Khanal leg. ( CDZMTU 050b).

Remarks

Diplommatina silvicola is a very distinct species due to its ovate and transparent shell.

References

Blanford W. T. 1862. Contribution to Indian Malacology, No. III. Descriptions of new operculated land shells from Pegu, Arakan and the Khasi Hills. Journal of the Asiatic Society of Bengal 31: 135 - 145.

Budha P. B., Naggs F. & Backeljau T. 2015. Annotated checklist of the terrestrial gastropods of Nepal. ZooKeys 492: 1 - 48. https: // doi. org / 10.3897 / zookeys. 492.9175

Godwin-Austen H. H. 1886. Land and freshwater Mollusca of India. Conchologia Indica 1 (5): 165 - 185.

Gude G. K. 1921. The fauna of British India. Mollusca-III (Land operculates: Cyclophoridae, Truncatellidae, Assimineidae, Helicinidae). Today & Tomorrow's Printers & Publishers, New Delhi.

Ramakrishna, Mitra S. C. & Dey A. 2010. Annotated checklist of Indian land molluscs. Records of Zoological Survey of India, Occasional Paper 306: 1 - 359.

Figures

Fig. 8. A. Diplommatina silvicola Godwin-Austen, 1886 (CDZMTU050). B. D. sperata W.T. Blanford, 1862 (CDZMTU062). C. D. syabrubesiensis sp. nov., holotype (CDZMTU051). The yellow arrow indicates the dorsal fold. Scale bar in images A2, A4, B2, B4, C2, C4 is 500 µm.

Fig. 9. Palatal lamellae (palatalis) of species of Diplommatina. Dotted lines indicate the position of the constriction. Dark lines indicate the palatalis. A. D. abiesiana sp. nov. B. D. exserta Godwin- Austen, 1886. C. D. fistulata sp. nov. D. D. folliculus (L. Pfeiffer, 1846). E. D. godawariensis sp. nov. F. D. maipokhariensis sp. nov. G. D. miriensis Godwin-Austen, 1917. H. D. munipurensis Godwin- Austen, 1892. I. D. oviformis Fulton, 1901. J. D. regularis Fulton, 1901. K. D. salgharica sp. nov. L. D. shivapuriensis sp. nov. M. D. silvicola Godwin-Austen, 1886. N. D. sperata W.T. Blanford, 1862. O. D. syabrubesiensis sp. nov.

Fig. 3. Diplommatina Benson, 1849 of Nepal. A. D. abiesiana sp. nov., holotype (CDZMTU020). B. D. exserta Godwin-Austen, 1886 (CDZMTU024). C. D. fistulata sp. nov., holotype (CDZMTU025). The yellow arrow indicates the dorsal fold. Scale bar in images A2, A4, B2, B4, C2, C4 is 500 µm.

Fig.1. Map of the localities and areas surveyed for Diplommatina spp. in Nepal.

Fig. 2. Shell terminology. A. D. regularis Fulton, 1901. B. D. folliculus (L. Pfeiffer, 1846). C. General outline of the lower part of a shell from Diplommatina species. Abbreviations: Prt = Parietalis (Prt1 = inner parietalis, Prt2 = outer parietalis); Pt = Palatalis; Hpt = Horizontal palatalis (Hpt1 = lower, Hpt2 = upper in case of two); Vpt = Vertical palatalis (Vpt1 = left side, Vpt2 = right side in case of two).

Fig. 4. Diplommatina Benson, 1849 of Nepal. A. D. folliculus (L. Pfeiffer, 1846) (CDZMTU028). B. D. godawariensis sp. nov., holotype (CDZMTU032). C. D. maipokhariensis sp. nov., holotype (CDZMTU034). Scale bar in images A2, A4, B2, B4, C2, C4 is 500 µm.