Diplommatina abiesiana Budha & Naggs, 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 : 6

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.3850668
persistent identifier	https://treatment.plazi.org/id/F203B92F-6A52-4687-91DA-749554BB03AC
taxon LSID	lsid:zoobank.org:act:F203B92F-6A52-4687-91DA-749554BB03AC
treatment provided by	Carolina
scientific name	Diplommatina abiesiana Budha & Naggs
status	sp. nov.

Treatment

Diplommatina abiesiana Budha & Naggs View in CoL sp. nov.

urn:lsid:zoobank.org:act:F203B92F-6A52-4687-91DA-749554BB03AC

Figs 3A View Fig , 9A View Fig

Diagnosis

Measurements (n = 4): SH 2.7–2.9 mm, SW 1.4–1.5 mm, Wh 6.0–6.5; holotype: SH 2.8 mm, SW 1.5 mm, Wh 6.0. Dextral, penultimate whorl and body whorl nearly equal in width. Constriction at the middle of the parietal wall ( Fig. 9A View Fig ). Parietalis moderate, gradually elevated inner side of the body whorl. A short horizontal palatalis near the inner edge of the peristome. Columellaris moderately developed ( Fig. 3A3 View Fig ). Columellar tooth weak. Protoconch smooth, Wh 1.5–2.0, with very minute evenly distributed pits, without radial ribs ( Fig. 3A View Fig 1 View Fig ). Teleoconch with dense radial ribs; 9–12 ribs/ 0.5 mm on the penultimate whorl; 7–9 ribs/ 0.5 mm on the body whorl towards the aperture ( Fig. 3A View Fig 2 View Fig , A 4 View Fig ). Spiral striation present. Umbilicus open. Aperture circular. Peristome with two lips; inner lip thin; 8–10 thin ribs between the two lips ( Fig. 3A View Fig 4 View Fig ). Parietal wall of the aperture extending to less than half the body whorl. Operculum paucispiral, corneous, thin, transparent, slightly concave, outer surface smooth, inner surface with weak ridge at the columellar margin.

Etymology

The species name refers to the habitat of the type locality, i.e., an Abies forest.

Type material

Holotype

NEPAL: Cholangpati , Langtang National Park, 3443 m, Abies forest, 28.110154 N, 85.334238 E, 19 May, R. Devkota and K. Saud leg. ( CDZMTU020 ).

GoogleMaps

Paratypes

NEPAL: 3 shells from the type locality, same data as holotype ( CDZMTU 021); 8 shells, Baghdwar, 2314 m, Shivapuri-Nagarjun National Park, 27.8052 N, 85.38447 E, 24 Jun. 2007, P.B. Budha and R. Devkota leg. ( CDZMTU 055); 1 shell, Dhunche, 2056 m, Langtang National Park, 28.10894 N, 85.29155 E, 3 Jun. 2007, P.B. Budha leg. ( CDZMTU 056).

Remarks

The shell form of D. abiesiana is similar to that of D. nana W.T. Blanford, 1865 ( Blanford 1865; Hanley & Theobald 1876: pl. 140, fig.1; Godwin-Austen 1886: pl. 49, fig. 6.), but differs by its less prominent columellar tooth, the more widely-separated radial ribs, the penultimate and body whorls of equal width, and the circular aperture.