Diplommatina folliculus (L. Pfeiffer, 1846 )

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 : 9-11

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.3850724
persistent identifier	https://treatment.plazi.org/id/03C6CF41-FFEC-FFE1-FDB9-431FD1E9FCD1
treatment provided by	Carolina (2020-05-18 19:40:19, last updated 2024-11-29 15:39:25)
scientific name	Diplommatina folliculus (L. Pfeiffer, 1846 )
status

Treatment

Diplommatina folliculus (L. Pfeiffer, 1846) View in CoL

Figs 2B View Fig , 4A View Fig , 9D View Fig

Bulimus folliculus Pfeiffer, 1846: 83 .

Bulimus folliculus – Pfeiffer 1848: 81–82.

Diplommatina folliculus View in CoL – Godwin-Austen 1868: 83, pl.1, figs 1–2. — Hanley & Theobald 1876: 56, pl. CXL, figs 8–9. — Gude 1921: 314. — Naggs 1997: 58.

Diplommatina (D.) folliculus View in CoL – Ramakrishna et al. 2010: 86.

Diplommatina (Diplommatina) folliculus View in CoL – Budha et al. 2015: p. 6.

Diagnosis

Measurements (n = 15): SH 2.6–3.0 mm, SW 1.2–1.4 mm, Wh 6.5–7.0. Dextral, penultimate whorl slightly wider than the body whorl. Constriction at the middle of the parietal wall ( Fig. 9D View Fig ). Internally with two parietal lamellae, both Prt1 and Prt2 very short, prominent at the lodging edge of the operculum ( Figs 2B View Fig , 4A View Fig 3 View Fig ). Two vertical palatal lamellae: Vpt1 along the constriction and Vpt2 short, but running parallel to Vpt1. No horizontal palatal lamella ( Fig. 9D View Fig ). Columellaris thin. Columellar tooth visible in the aperture. Protoconch smooth, Wh 1.5–2.0, with fine pits. Teleoconch with radial ribs visible only after the second whorl; widely spaced radial ribs; 6–7 ribs/ 0.5 mm on the penultimate whorl; 4–6 ribs/ 0.5 mm on the body whorl towards the aperture ( Fig. 4A View Fig 2 View Fig , A 4 View Fig ). Spiral striation distinct. Umbilicus closed. Aperture circular. Peristome with two lips and expanded; lips widely spaced, sinuous at the angular edge. Outer lip slightly reflected. Operculum paucispiral, corneous, thin, transparent, slightly concave, outer surface smooth, inner surface with peripheral circular edge which is thicker at columellar margin.

Material examined

NEPAL: 80+ shells, Phulchowki Hill, Lalitpur District, 1551–2298 m, 27.580434 N, 85.387538 E, 3–11 May 2007, P.B. Budha leg. ( CDZMTU 028); 95 shells, Shivapuri-Nagarjun National Park, 2314– 2716 m, 27.812591 N, 85.378807 E, 24–21 Jun. 2007, P.B. Budha leg. ( CDZMTU 029); 100+ shells, Shivapuri-Nagarjun National Park, 2314–2716 m, 27.812591 N, 85.378807 E, 24–26 Apr. 2008, P.B. Budha leg. ( CDZMTU 029b); 2 shells, Raniban, Balaju, Kathmandu, 1373 m, 27.7426 N, 85.2847E, 12 Mar. 2009, Srijana Khanal leg. ( CDZMTU 030); 100+ shells, Dhunche, Langtang National Park, 2056–2663 m, 28.106128 N, 85.303259 E, 2 Jun. 2007 and 11 May 2008, P.B. Budha and R. Devkota leg. ( CDZMTU 031).

Remarks

Diplommatina folliculus is a very common, abundant and distinct species that can be distinguished from the others by its strong, widely-spaced lips and costulated radial ribs. It is distributed from the western to the eastern Himalaya. The most similar species is D. silvicola Godwin-Austen, 1886 (pl. LXV, figs 3, 3a), but D. folliculus differs by its more slender shell and less distinct columellar tooth.

References

Benson W. H. 1849. Characters of Diplommatina, a new genus of terrestrial mollusks belonging to the family of Carychiadae, and of a second species contained in it; also of a new species of Carychium inhabiting the Western Himalaya. Annals and Magazine of Natural History, Series 2 4: 193 - 195. https: // doi. org / 10.1080 / 03745486009494813

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. 1868. Figures of the species of Diplommatina, Benson, hitherto described as inhabiting the Himalayas, Khasi Hills and Burma, with some additional forms from Darjiling and the Khasi Hills. Journal of the Asiatic Society of Bengal 37: 83 - 84.

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.

Hanley S. & Theobald W. 1876. Conchologia Indica; being illustrations of the land and freshwater shells of British India. London. https: // doi. org / 10.5962 / bhl. title. 14456

Naggs F. 1997. William Benson and the early study of land snail in British India and Ceylon. Archives of Natural History 24: 37 - 88. https: // doi. org / 10.3366 / anh. 1997.24.1.37

Pfeiffer L. 1846. Symbolae ad Historiam Heliceorum. Fischer Verlag, Kassel, Germany. https: // doi. org / 10.5962 / bhl. title. 11903

Pfeiffer L. 1848. Monographia Heliceorum Viventium. Descriptiones Systematicas et Criticas, Omnium Huius Familiae Generum et Specierum Hodie Cognitarum. Volumen Premium. Brockhaus, Leipzig. https: // doi. org / 10.5962 / bhl. title. 10791

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. 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.

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.