Diplommatina salgharica Budha & Backeljau, 2017

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 : 19

Diplommatina salgharica Budha & Backeljau sp. nov.

urn:lsid:zoobank.org:act:3F0F16E7-C443-4184-A407-6FE45D74E5FD

Figs 7B , 9K

Diagnosis

Measurements (n = 8): SH 2.8–3.1 mm, SW 1.5–1.6 mm, Wh 6.5–7.0; holotype: SH 3.0 mm, SW 1.5 mm, Wh 7.0. Dextral, penultimate whorl wider than the body whorl. Constriction immediately at the right edge of PeP in between the two lips ( Fig. 9K ). Two parietalis: Prt1 long and prominent; Prt2 short, hardly visible ( Fig. 7B 3 ). One vertical palatalis running along the constriction. One horizontal palatalis ( Fig. 9K ). Columellaris prominent ( Fig. 7B 3 ). Columellar tooth distinct. Protoconch smooth, Wh approx. 2.0, with very fine pits ( Fig. 7B 1 ). Teleoconch with very strong and widely spaced radial ribs; about 4–6 ribs/ 0.5 mm on the penultimate whorl; 7–8 ribs/ 0.5 mm on the body whorl towards the aperture ( Fig. 7B 2 , B 4 ). Spiral striation present, but very weak and hardly visible. Umbilicus open, nearly covered by the outer lip. Aperture circular. Parietal wall of aperture slightly oblique along the coiling axis. Peristome with two close lips, inner lip slightly thickened and reflected; basal lip angular along the columella. Parietal wall of aperture extending beyond half the body whorl.

Etymology

The species name refers to Salghari in Nepali, meaning Sal tree ( Shorea robusta ) forest, indicating the habitat from which the species was collected.

Type material

Holotype

NEPAL: Siddha Cave , Tanahun District, 695 m, Shorea robusta forest, 27.94544 N, 84.422244 E, 1 Apr. 2008, P.B. Budha leg. ( CDZMTU046 ).

Paratypes

NEPAL: 50 shells from the type locality, same data as holotype ( CDZMTU 047); 10 shells from the type locality, 4 Oct. 2008, P.B. Budha leg. ( CDZMTU 047b).

Remarks

Diplommatina salgharica sp. nov. is very similar to D. exsert a (see Godwin-Austen 1886: pl. 49, figs 2, 2a), but is easily distinguished by its less tumid apical whorls and the presence of two parietal teeth. The constriction is nearly at the middle of the parietal lip in D. exserta , i.e., at the right edge of the peristome immediately to the parietal lip of the aperture.

Figures

Fig. 7. Diplommatina Benson, 1849 of Nepal. A. D. regularis Fulton, 1901 (CDZMTU045). B. D. salgharica sp. nov., holotype (CDZMTU046). C. D. shivapuriensis sp. nov., holotype (CDZMTU048). 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.

Fig.1. Map of the localities and areas surveyed for Diplommatina spp. in Nepal.

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.