Plagigeyeria vriosticaensis, Grego, 2020

Grego, Jozef, 2020, Revision of the stygobiont gastropod genera Plagigeyeria Tomlin, 1930 and Travunijana Grego & Glöer, 2019 (Mollusca; Gastropoda; Moitessieriidae and Hydrobiidae) in Hercegovina and adjacent regions, European Journal of Taxonomy 691, pp. 1-56 : 36

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.4336098

persistent identifier

https://treatment.plazi.org/id/BE0E3ADC-7F3F-4866-9BCD-2769746A2A81

taxon LSID

lsid:zoobank.org:act:BE0E3ADC-7F3F-4866-9BCD-2769746A2A81

treatment provided by

Valdenar

scientific name

Plagigeyeria vriosticaensis
status

sp. nov.

Plagigeyeria vriosticaensis View in CoL sp. nov.

urn:lsid:zoobank.org:act:BE0E3ADC-7F3F-4866-9BCD-2769746A2A81

Fig. 12 View Fig C–D

Type material

Holotype

BOSNIA AND HERCEGOVINA • 1 shell; West Herzegovina Canton , Vitina, Vrelo “Vrioštica” ( Fig. 3E View Fig ); 43.237595° N, 17.485963° E; 98 m a.s.l.; 2 Apr. 2018; J. Grego, D. Angyal, G. Jakab and M. Olšavský leg.; HNHM-MOLL-104182. GoogleMaps

Paratypes

BOSNIA AND HERCEGOVINA • 4 shells; same data as for holotype; SBMNH 626400 About SBMNH /2, coll. Grego /2 GoogleMaps .

Dimensions

Holotype: H 2.82 mm; W 1.76 mm; BH 1.66 mm; BW 1.31 mm; AH 1.21 mm; AW 1.17 mm.

Paratype: H 3.00 mm; W 1.45 mm; BH 1.72 mm; BW 1.28 mm; AH 1.24 mm; AW 1.28 mm.

Etymology

Named after the type locality: spring of Vrioštica River.

Description

Elongate oval shell with 4.5 convex whorls and deep suture, 2.8 mm high, with blunt rounded apex, milky-white colour with rusty incrustations. Shell surface shiny and finely axially ribbed at the teleoconch. Nepionic whorl faintly spirally ribbed. Umbilicus narrow, slit-like. Aperture rhomboid-oval with outward reflex, posteriorly and anteriorly more expanded. Peristome blunt, and reflexed along the aperture outline. Outer lip lateral profile straight and sinuous posteriorly. Sinuation present at columellar marginal profile. Aperture protruded against teleoconch outline from frontal view.

Differentiating features

The species is closely related to P. angyaldorkae sp. nov., from which it differs by having a smaller number of whorls and a more prominent body whorl and, by a more narrow umbilicus and different shape of aperture. Conchologically, it represents an intermediate shell morphology between P. angyaldorkae sp. nov. and P. jakabi sp. nov., from which it can be distinguished by its more robust shell shape and different shape of the aperture with much broader posterior channel and by a smaller umbilicus. From sympatric P. ozimeci sp. nov. it differs by a larger shell with more whorls, a less conical shell shape and by a different shape of the aperture. Shell morphometry comparison with the related species is presented in the Table 3.

Habitat

See the habitat of P. ozimeci sp. nov.

Distribution

The species is only known from the type locality.

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF