Diplommatina miriensis Godwin-Austen, 1917,

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: 13

publication ID

https://doi.org/10.5852/ejt.2017.337

publication LSID

lsid:zoobank.org:pub:2669CB69-5064-4B5D-AC25-856680E3B9AA

DOI

http://doi.org/10.5281/zenodo.3850706

persistent identifier

http://treatment.plazi.org/id/03C6CF41-FFE8-FFE7-FDAF-4669D485FA69

treatment provided by

Carolina

scientific name

Diplommatina miriensis Godwin-Austen, 1917
status

 

Diplommatina miriensis Godwin-Austen, 1917 

Figs 5AView Fig, 9GView Fig

Diplommatina miriensis Godwin-Austen, 1917: 577  , fig. 4D.

Diplommatina (Metadiancta) miriensis  – Gude 1921, 342. — Ramakrishna et al. 2010: 95 — Budha et al. 2015: 7.

Diagnosis

Measurements (n = 5): SH 1.5–1.6 mm, SW 0.8–1.0 mm, Wh 5.5. Dextral, whorls regularly increasing, penultimate and body whorl nearly equal in width. Constriction at the middle of the parietal wall ( Fig. 9GView Fig). Parietalis very weak, nearly invisible ( Fig. 5AView Fig 3View Fig). One vertical palatalis along the constriction and one very strong horizontal palatalis just above the columella ( Fig. 9GView Fig). Columellaris thin and weak. Columellar tooth very weak to nearly absent. Protoconch smooth, Wh approx. 1.5, with very distinct small pits evenly distributed all over, no radial ribs ( Fig. 5AView Fig 1View Fig). Teleoconch with dense radial ribs; about 10–13 ribs/ 0.5 mm on the penultimate whorl; 8–9 ribs/ 0.5 mm on the body whorl towards the aperture ( Figs 5AView Fig 2View Fig, 5AView Fig 4View Fig). Very fine spiral striation present. Umbilicus closed. Aperture circular. Peristome with two lips; under high magnification 6–10 ribs visible between the lips ( Fig. 5AView Fig 4View Fig). Parietal wall with thin callus. Angular edge of the peristome curved ( Fig. 5AView Fig 3View Fig, A 4View Fig); basal edge of peristome rounded; outer lip thin, inner lip thick. Parietal wall of the aperture hardly reaching half of the body whorl.

Material examined

NEPAL: 1 shell, Deurali, Syabru, Langtang National Park, 2412 m, 27.805037 N, 85.387862 E, 25 Apr. 2008, P.B. Budha leg. ( CDZMTU 036); 3 shells, Okhareni, Shivapuri-Nagarjun National Park, 2326 m, 27.813051 N, 85.4217 E, 22 Jun. 2007, R. Devkota and N. Kohar leg. ( CDZMTU 037); 1 shell, Baghdwar, Shivapuri-Nagarjun National Park, 2500 m, 27.8133 N, 85.3877 E, 25 Apr. 2008, P.B. Budha leg. ( CDZMTU 037b); 4 shells, Cholangpati, Langtang National Park, 3443 m, 28.110154 N, 85.334238 E, 19 May 2008, P.B. Budha leg. ( CDZMTU 038); 7 shells, Raniban, Balaju, Kathmandu, 1840–1902 m, 27.745997 N, 85.287240 E, 12 Mar. 2009, S. Khanal leg. ( CDZMTU 058).

Remarks

D. miriensis  is the smallest species reported in the present study. Similar sized species are D. godwini Möllendorff, 1898  from Naga Hill, NE India, and the south Indian D. minima Beddome, 1875  . Diplommatina godwini  has more whorls (>7) than D. miriensis  , while the peristome of D. minim  a has no curved angular edge.

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Architaenioglossa

Family

Diplommatinidae

Genus

Diplommatina

Loc

Diplommatina miriensis Godwin-Austen, 1917

Budha, Prem B., Naggs, Fred & Backeljau, Thierry 2017
2017
Loc

Diplommatina (Metadiancta) miriensis

Budha P. B. & Naggs F. & Backeljau T. 2015: 7
Ramakrishna & Mitra S. C. & Dey A. 2010: 95
Gude 1921, 342
2010
Loc

Diplommatina miriensis

Godwin-Austen H. H. 1917: 577
1917