Diplommatina miriensis Godwin-Austen, 1917: 577
Diplommatina ( Metadiancta ) miriensis
Gude 1921, 342
Ramakrishna et al. 2010: 95
Budha et al. 2015: 7
The genus Diplommatina Benson, 1849 (Gastropoda: Caenogastropoda: Diplommatinidae) in Nepal, with the description of seven new species
Budha, Prem B.
Naggs, Fred
Backeljau, Thierry
European Journal of Taxonomy
2017
2017-07-21
337
1
30
36M37
Godwin-Austen, 1917
Godwin-Austen
1917
[513,1074,267,294]
Gastropoda
Diplommatinidae
Diplommatina
GBIF
Animalia
Architaenioglossa
12
13
Mollusca
species
miriensis
Figs 5A, 9G
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. 9G). Parietalis very weak, nearly invisible ( Fig. 5A 3). One vertical palatalis along the constriction and one very strong horizontal palatalis just above the columella ( Fig. 9G). 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. 5A 1). Teleoconch with dense radial ribs; about 10–13 ribs/ 0.5 mmon the penultimate whorl; 8–9 ribs/ 0.5 mmon the body whorl towards the aperture ( Figs 5A 2, 5A 4). Very fine spiral striation present. Umbilicus closed. Aperture circular. Peristome with two lips; under high magnification 6–10 ribs visible between the lips ( Fig. 5A 4). Parietal wall with thin callus. Angular edge of the peristome curved ( Fig. 5A 3, A 4); 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. ( CDZMTU036); 3 shells, Okhareni, Shivapuri-Nagarjun National Park, 2326 m, 27.813051 N, 85.4217 E, 22 Jun. 2007, R. Devkota and N. Kohar leg. ( CDZMTU037); 1 shell, Baghdwar, Shivapuri-Nagarjun National Park, 2500 m, 27.8133 N, 85.3877 E, 25 Apr. 2008, P.B. Budha leg. ( CDZMTU037b); 4 shells, Cholangpati, Langtang National Park, 3443 m, 28.110154 N, 85.334238 E, 19 May 2008, P.B. Budha leg. ( CDZMTU038); 7 shells, Raniban, Balaju, Kathmandu, 1840–1902 m, 27.745997 N, 85.287240 E, 12 Mar. 2009, S. Khanal leg. ( CDZMTU058).
Remarks D. miriensisis the smallest species reported in the present study. Similar sized species are D. godwiniMöllendorff, 1898from Naga Hill, NE India, and the south Indian D. minimaBeddome, 1875. Diplommatina godwinihas more whorls (>7) than D. miriensis, while the peristome of D. minima has no curved angular edge.