Plagigeyeria lewarnei, Grego, 2020
publication ID |
https://doi.org/ 10.5852/ejt.2020.691 |
publication LSID |
lsid:zoobank.org:pub:CC8487E0-169D-4B32-A2AB-F9B34DFB3F3B |
DOI |
https://doi.org/10.5281/zenodo.4336090 |
persistent identifier |
https://treatment.plazi.org/id/5ADC5B2F-8108-43CD-8082-D08F1B850B8B |
taxon LSID |
lsid:zoobank.org:act:5ADC5B2F-8108-43CD-8082-D08F1B850B8B |
treatment provided by |
Valdenar |
scientific name |
Plagigeyeria lewarnei |
status |
sp. nov. |
Plagigeyeria lewarnei View in CoL sp. nov.
urn:lsid:zoobank.org:pub:CC8487E0-169D-4B32-A2AB-F9B34DFB3F3B
Figs 9D View Fig , 11B View Fig
Type material
Holotype
BOSNIA AND HERCEGOVINA • 1 shell; Republika Srpska , Trebinje Municipality , Gorica, Vrelo “Vruljak 1”, sandy sediment taken by SCUBA dive ca 200 m from the cave entrance ( Fig. 2F View Fig ); 42.713736° N; 18.368096° E; 280 m a.s.l.; 6 Sep. 2009; Gergely Balázs. leg.; HNHM MOLL 104176 About HNHM . GoogleMaps
Paratypes
BOSNIA AND HERCEGOVINA • 1 fragmented specimen as for holotype; same data; HNHM MOLL 105099 About HNHM /; Bosnia and Hercegovina • 7 shells; Republika Srpska , Trebinje Municipality , Vrelo “Tučevac” at right bank of Trebišnjica River, 42.714257° N; 18.303311° E; 280 m a.s.l.; 31 Mar. 2018; J. Grego, M. Olšavský, G. Jakab and M. Kováčiková leg.; SBMNH 626406 About SBMNH /1 fragmented specimen, JG F1336 /6 fragmented specimens GoogleMaps .
Dimensions
Holotype: H 1.95 mm; W 1.32 mm; BH 1.21mm; BW 1.05 mm; AH 0.93 mm; AW 1.05 mm.
Etymology
Named after Brian Lewarne from The Devon Karst Research Society, Plymouth UK, who leads the “Proteus Project” hypogean species conservation project in Trebinje and supported this study by extensive consultancy about karst groundwater circulation on the studied area.
Description
Elongate conical shell 1.95 mm high with four convex whorls (apex of holotype missing) separated with rather weak suture. Shell surface covered by slightly sinuated lamellate axial ribs cross-sected by slightly crenated fine spiral cords. Twelve spiral cords are more prominent at the nepionic whorl forming a cancellate surface. Faint spiral ribs continue through the apex where the axial ribs are missing and slowly fade out at the protoconch covered by malleate structure. Umbilicus narrow slit-like and obscured by the strongly reflexed columellar marginal fold. Expanding trumpet-like reflexed aperture with typically sinuated labral margin adapically forward protruding. The ventral shape of the aperture is oval, protruded against the shell outline and slightly labrally depressed, attached to the body whorl at its columellar side. Peristome blunt and strongly outward reflexed along aperture outline.
Differentiating features
The shell morphology and surface sculpture of the new species are closely related to those of P. mostarensis , however the new species differs significantly by its much smaller shell with different shape, by more blunt-rounded apex and by the differently shaped aperture, more protruding at its lower margin. Furthermore the radial malleated cord structure of the first protoconch whorl is weaker in the new species. The new species represents an intermediate between P. mostarensis and P. olsavskyi by its protruding lateral labral profile, however, it differs from the latter by a more closed umbilicus and different shell surface sculpture and by a more smooth protoconch surface.
Habitat
Only scarce, eroded or fragmented shells have been recovered from the spring and cave sediments of the spring at the right bank of Trebišnjica in Trebinje. This suggests a deep cave habitat remote from the spring head or from the hitherto known cave passages. The cave in the type locality drains the karst aquifers north of Trebinje likely from Ljubomirsko Polje (506 m a.s.l.).
Distribution
The new species is so-far known only from the type locality and from the Vrelo “Tučevac” in Trebinje. Fragments resembling this species were found in sediments of “Sušicka Jama” Estavelle at the border with Montenegro.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
Kingdom |
|
Phylum |
|
Class |
|
Order |
|
Family |
|
Genus |