Revision of the stygobiont gastropod genera Plagigeyeria Tomlin, 1930 and Travunijana Grego & Glöer, 2019 (Mollusca; Gastropoda; Moitessieriidae and Hydrobiidae) in Hercegovina and adjacent regions Author Grego, Jozef 44C83AAB-CF4E-46E8-8146-DFBADA150AB6 Horná Mičiná, SK- 97401 Banská Bystrica, Slovakia. jozef.grego@gmail.com text European Journal of Taxonomy 2020 2020-07-27 691 1 56 journal article 10.5852/ejt.2020.691 918d86bb-f11d-414e-9c1e-21ec17737792 2118-9773 3961840 CC8487E0-169D-4B32-A2AB-F9B34DFB3F3B Plagigeyeria listicaensis , sp. nov. urn:lsid:zoobank.org:act: BBEACB84-641D-4E59-B97A-C748FF43816F Figs 7 E–F, 8B Type material Holotype BOSNIA AND HERCEGOVINA • 1 shell ; Bosnian Federation , West Herzegovina Canton, Široki Brijeg , Vrelo Lištica 2 (BiloVrilo) 1 km north of the city ( Fig. 4B ); 43.396392° N , 17.596437° E ; 319 m a.s.l. ; 2 Apr. 2018 ; J. Grego , D. Angyal , G. Jakab and M. Olšavský leg.; HNHM-MOLL-104168 . Paratypes BOSNIA AND HERCEGOVINA • 37 shells ; same data as for holotype; HNHM-MOLL-104169/1 , SBMNH 626250/4, coll. Grego /31, coll. Glöer /1 . Dimensions Holotype : H 2.00 mm; W 1.30 mm; BH 1.23 mm ; BW 1.03 mm ; AH 0.91 mm ; AW 0.81 mm . Paratype : H 2.21 mm ; W 1.47 mm; BH 1.28 mm ; BW 1.09 mm ; AH 0.98 mm ; AW 0.88 mm . Etymology Named after the type locality in the springs of Lištica River in the vicinity of Široki Brijeg. Description Solid elongate-conical shell, 2.0 mm high, apex blunt, slightly elevated protoconch, with four convex whorls and deep suture. Shell colour is translucent-whitish. Teleoconch surface covered by fine axial ribs and fine, close-set spiral cords forming a distinct cancellate structure. With dominating axial ribs. Nepionic whorl covered by 25 wavy granulose close-set spiral ribs connected by granulose irregular structures fusing at malleate apex. Open umbilicus, partly obscured by reflexed columellar margin. The elongate-oval reflexed aperture attached to body whorl by a narrow sulcus. Peristome reflexed along the aperture outline. Outer lip weakly sinuous, straight at its columellar side and slightly protruded adapically. Columellar lip with straight lateral profile. Aperture at basal view stepwise protruded against body whorl. Differentiating features Compared to P. olsavskyi sp. nov. , differs by its broader, more conical shell, less blunt protoconch, a proportionally larger aperture, more closed umbilicus and more coarsely sculptured protoconch. Shell morphometry comparison with the related species is presented in the Table 2 . Habitat The type locality consists of two large karst spring risings at Lištica valley 1 km north of Široki Brijeg at 319 m a.s.l. The southern spring is captured for a water supply, while the northern one has a deep spring lake with free outflows through old water mill ruins, where the sandy sediment samples were taken. The spring is most likely getting its water through karst conduits from Rakitno Polje ( 890 m a.s.l.) and from the sinkholes around the upper Ugrovača River. Table 2. Shell morphometry comparison of Plagigeyeria plagiostoma (A. J. Wagner, 1914 ) , P. ljutaensis sp. nov. , P. konjicensis sp. nov. , P. olsavskyi sp. nov. , P. ozimeci sp. nov. , P. erossi sp. nov. and P. listicaensis sp. nov.
Species Specimen H W BH BW AH AW CA H/W AH W / H/ H/ W / H/
mm mm mm mm mm mm ° / AW BW BH AH AW (W-BW)
Plagigeyeria plagiostoma Topotype JG F1116 1.91 1.25 1.10 0.93 0.81 0.63 25 1.53 1.29 1.34 1.74 2.36 1.98 5.97
Plagigeyeria inflata Topotype JG F1117 2.44 1.85 1.58 1.31 1.16 1.01 33 1.32 1.15 1.41 1.54 2.10 1.83 4.52
Plagigeyeria ljutaensis sp. nov. Holotype HNHM 104180 2.09 1.49 1.16 0.93 0.90 0.78 35 1.40 1.15 1.60 1.80 2.32 1.91 3.73
Plagigeyeria konjicensis sp. nov. Holotype HNHM 104174 2.09 1.28 1.10 0.87 0.84 0.72 32 1.63 1.17 1.47 1.90 2.49 1.78 5.10
Plagigeyeria olsavskyi Holotype HNHM 104178 2.01 1.52 1.22 1.07 0.90 0.93 34 1.32 0.97 1.42 1.65 2.23 1.63 4.47
Plagigeyeria olsavskyi sp. nov. Paratype JG F1192 2.00 1.32 1.25 0.99 0.94 0.79 37 1.52 1.19 1.33 1.60 2.13 1.67 6.06
Plagigeyeria var. olsavskyi sp. nov. Prokop HNHM 104176 2.03 1.42 1.25 1.01 0.85 1.07 34 1.43 0.79 1.41 1.62 2.39 1.33 4.95
Plagigeyeria olsavskyi sp. nov. Paratype (Mali Prokop) JG F1209 1.87 1.34 1.19 0.96 0.86 0.69 34 1.40 1.25 1.40 1.57 2.17 1.94 4.92
Plagigeyeria listicaensis sp. nov. Holotype HNHM 104168 2.00 1.30 1.23 1.03 0.91 0.81 35 1.54 1.12 1.26 1.63 2.20 1.60 7.41
Plagigeyeria listicaensis Paratype JG F1250 2.21 1.47 1.28 1.09 0.98 0.88 37 1.50 1.11 1.35 1.73 2.26 1.67 5.82
sp. nov.
Plagigeyeria ozimeci sp. nov. Holotype HNHM 104173 1.97 1.45 1.28 1.03 1.03 0.83 43 1.36 1.24 1.41 1.54 1.91 1.75 4.69
Plagigeyeria ozimeci sp. nov. Paratype JG F1215 1.82 1.38 1.17 1.00 0.98 0.79 40 1.32 1.24 1.38 1.56 1.86 1.75 4.79
Plagigeyeria Paratype 1.90 1.28 1.24 0.93 1.00 0.86 40 1.48 1.16 1.38 1.53 1.90 1.49 5.43
ozimeci sp. nov. HNHM 104179
Plagigeyeria erossi sp. nov. Holotype HNHM 104166 2.10 1.13 1.25 0.90 0.87 0.72 32 1.86 1.21 1.26 1.68 2.41 1.57 9.13
Plagigeyeria erossi sp. nov. Paratype JG F0518 2.01 1.28 1.12 0.93 0.88 0.77 33 1.57 1.14 1.38 1.79 2.28 1.66 5.74
Plagigeyeria erossi sp. nov. Paratype JG F1122 1.79 1.09 1.12 0.88 0.79 0.70 33 1.64 1.13 1.24 1.60 2.27 1.56 8.52
Distribution The species is known only known from the type locality.