The genus Diplommatina Benson, 1849 (Gastropoda: Caenogastropoda: Diplommatinidae) in Nepal, with the description of seven new species
Author
Budha, Prem B.
University of Antwerp, Evolutionary Ecology Group, Universiteitsplein 1, B- 2610, Antwerp, Belgium. & Central Department of Zoology, Tribhuvan University, Kirtipur, Kathmandu, Nepal. & Corresponding author: prembudha @ yahoo. com
prembudha@yahoo.com
Author
Naggs, Fred
Natural History Museum, Cromwell Road, London, SW 7 5 BD, UK. & Email: f. naggs @ nhm. ac. uk
f.naggs@nhm.ac.uk
Author
Backeljau, Thierry
University of Antwerp, Evolutionary Ecology Group, Universiteitsplein 1, B- 2610, Antwerp, Belgium. & Royal Belgian Institute of Natural Sciences, Vautierstraat 29, B- 1000, Brussels, Belgium. & Email: thierry. backeljau @ naturalsciences. be
thierry.backeljau@naturalsciences.be
text
European Journal of Taxonomy
2017
2017-07-21
337
1
30
journal article
22067
10.5852/ejt.2017.337
5a7f73c5-5646-446f-a72c-3ea18d8f634f
2118-9773
3832483
2669CB69-5064-4B5D-AC25-856680E3B9AA
Diplommatina abiesiana
Budha & Naggs
sp. nov.
urn:lsid:zoobank.org:act:
F203B92F-6A52-4687-91DA-749554BB03AC
Figs 3A
,
9A
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
). 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
). Columellar tooth weak. Protoconch smooth, Wh 1.5–2.0, with very minute evenly distributed pits, without radial ribs (
Fig. 3A
1
). 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
2
, A
4
). Spiral striation present. Umbilicus open. Aperture circular. Peristome with two lips; inner lip thin; 8–10 thin ribs between the two lips (
Fig. 3A
4
). 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
).
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.