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
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.

Kingdom	Animalia
Phylum	Mollusca
Class	Gastropoda
Order	Architaenioglossa
Family	Diplommatinidae
Genus	Diplommatina