Diplommatina, Benson, 1849

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: 23-24

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.3850662

persistent identifier

http://treatment.plazi.org/id/03C6CF41-FFF2-FFFC-FF13-42F7D025F9D2

treatment provided by

Carolina

scientific name

Diplommatina
status

 

Key to the Nepalese Diplommatina  species

A key to 15 species of Diplommatina  is provided. Two species of Diplommatina  ( D. canarica  and D. pachycheilus  ) reported by Kuznetsov & Schileyko (1997) were excluded from the key because neither species were found in the present surveys and no Nepalese material was available to examine internal lamellae. Moreover, D. canarica  is endemic in the Western Ghats ( Raheem et al. 2014).

1. Spiral striation present ...................................................................................................................... 2

– Spiral striation absent, constriction at the left side of the parietal edge of the aperture ( Fig. 8EView Fig), presence of two parietalis (Prt1 and Prt2), two vertical palatalis (Vpt1 and Vpt2) and two horizontal palatalis (Hpt1 and Hpt2) ........................................................................... D. godawariensis  sp. nov

2. Spiral striation fairly visible ............................................................................................................. 3

– Spiral striation distinctly visible ....................................................................................................... 5

3. Dorsal fold present ............................................................................................................................ 4

– Dorsal fold absent, constriction at AeP ( Fig. 9MView Fig), parietal wall slightly tilted left ( Fig. 7CView Fig) ..................................................................................................... D. shivapuriensis  sp. nov

4. Dorsal fold distinct ( Fig. 3CView Fig 4View Fig) .............................................................................. D. fistulata  sp. nov

– Dorsal fold fairly distinct ( Fig. 8CView Fig 4View Fig) ....................................................... D. syabrubesiensis  sp. nov

5. Radial ribs widely spaced, 5–10 ribs/ 0.5 mm ................................................................................... 6

– Radial ribs narrowly spaced, 10–20 ribs/ 0.5 mm ........................................................................... 10

6. Constriction at the middle of the parietal wall of the peristome ....................................................... 7

– Constriction not at the middle of the parietal wall of the peristome ................................................ 8

7. Two short parietalis (Prt1 and Prt2) ( Fig. 2BView Fig), columellaris moderate ( Fig. 4AView Fig 3View Fig) ............................. ........................................................................................................... D. folliculus (L. Pfeiffer, 1846) 

– One long parietalis, columellaris strong ( Fig. 8AView Fig 3View Fig) .................... D. silvicola Godwin-Austen, 1886 

8. Constriction in the left side of PeP, two short horizontal palatalis (Hpt1 and Hpt2) ( Fig. 9FView Fig) .................................................................................................. D. maipokhariensis  sp. nov

– Constriction in the right side of PeP ................................................................................................. 9

9. Apical whorls slender ( Fig. 3BView Fig), one parietalis ............................. D. exserta Godwin-Austen, 1886 

– Apical whorls not slender ( Fig. 4BView Fig), two parietalis (Prt1 and Prt2) ( Fig. 9BView Fig) ................................... ........................................................................................................................... D. salgharica  sp. nov

10. Constriction near or at the center of PeP .........................................................................................11

– Constriction not at the center of PeP ............................................................................................... 14

11. Horizontal palatalis present ............................................................................................................ 12

– Horizontal palatalis absent .............................................................................................................. 13

12. AeP straight ( Fig. 3AView Fig), parietalis thin and long ( Fig. 3A3View Fig) ................................ D. abiesiana  sp. nov

– AeP curved ( Fig. 5A, AView Fig 4View Fig), parietalis very weak, nearly invisible ...................................................... ..................................................................................................... D. miriensis Godwin-Austen, 1917 

13. Penultimate whorl slightly larger than body whorl, columellar tooth distinct ( Fig. 8BView Fig) ............................................................................................ D. sperata W.T. Blanford, 1862 

– Penultimate whorl and body whorl nearly equal, columellar tooth not distinct ( Fig. 5BView Fig) .............................................................................. D. munipurensis Godwin-Austen, 1892 

14. Constriction at the left side from the center of the PeP ( Fig. 9JView Fig), AeP curved ( Fig.A4View Fig), short horizontal palatalis ( Fig. 9JView Fig) ........................................................................................ D. regularis Fulton, 1901 

– Constriction far ahead from the aperture, very long horizontal palatalis and two vertical palatalis (Vpt1 and Vpt2) ( Fig. 9IView Fig) ........................................................................... D. oviformis Fulton, 1901