Cochlostoma Jan, 1830 revised: an overview of the subgenus Turritus Westerlund, 1883 and its species (Caenogastropoda, Cochlostomatidae) Author Zallot, Enrico 365E17AD-6938-4364-A526-F1BDA2663E10 Per Ligont 1, 33070 Budoia, Italy. ezallot@gmail.com Author Kamchev, Panche 9FA2BE01-3355-4340-B57C-9E2841D5E4C2 Naturalis Biodiversity Center, Darwinweg 2, 2333 CR Leiden, the Netherlands. panekamchev@gmail.com Author Schilthuizen, Menno 683D0AB7-CDD8-4FAA-94B6-436F3BFB8873 Naturalis Biodiversity Center, Darwinweg 2, 2333 CR Leiden, the Netherlands. & Taxon Expeditions, Rembrandtstraat 20, 2311 VW Leiden, the Netherlands. menno.schilthuizen@naturalis.nl Author Fehér, Zoltán E801EC76-8B1E-450B-993E-BBBE57C00EA9 WWF Hungary, Álmos vezér útja 69 / A, 1141 Budapest, Hungary. feher.zoltan.nhmus@gmail.com Author Mattia, Willy De C74A049D-9D7B-4A1F-878B-5BDFD104219F Central Research Laboratories, Burgring 7, 1010, Vienna, Austria; Department of Evolutionary Biology, University of Vienna, Djerassiplatz 1, 1030, Vienna, Austria. wdemattia@gmail.com Author Gittenberger, Edmund D786C279-FC92-4D08-AF16-F79A9705E0AE Naturalis Biodiversity Center, P. O. Box 9517, 2300 RA Leiden, the Netherlands. egittenberger@yahoo.com text European Journal of Taxonomy 2024 2024-03-21 927 1 163 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2475/11013 journal article 10.5852/ejt.2024.927.2475 2118-9773 10853688 B6E43365-FACA-49BA-8CCD-77E4BF8F0016 Cochlostoma ( T. ) pallgergelyi sp. nov. urn:lsid:zoobank.org:act: AD 1709F8-EBA2-4C81-81E7-9A6923E95BB4 Figs 26 (green dots), 27E, 30–31 Differential diagnosis The shell is characterized by the shape of the columellar lobe, with a deep indentation, and the regular prominent and whitish ribs. Etymology This species is dedicated to Barna Páll-Gergely, malacologist, and a prominent member of the latest generation of Hungarian taxonomists. Holotype MONTENEGRO • ♀ ; 1- Kameno ; 42.4877° N , 18.5603° E ; Erőss and Fehér leg.; Apr. 2000 ; HNHM105450 . Other specimens MONTENEGRO • 1- Kameno 2 (topotypical); 42.4877° N , 18.5603° E ; 2015; Deli , Erőss , Fehér leg.; HNHM100380 • 3- near Lovcén peak ; 42.4004° N , 18.794° E ; 2008; Dányi , Fehér , Kontschán and Murányi leg.; HNHM99889 . Type locality MONTENEGRO • 1- Kameno ; 42.4877° N , 18.5603° E . Fig. 30. Cochlostoma ( T. ) pallgergelyi sp. nov. , female holotype, 1- Kameno, MONT (HNHM105450). Fig. 31. Cochlostoma ( T. ) pallgergelyi sp. nov. , 1- Kameno, MONT (HNHM-100380). Description SHELL . Closely spaced riblets on last part of protoconch. Teleoconch spotless, with prominent, thin and well-spaced ribs becoming weaker toward aperture. Moderately strong lip with indented columellar lobe covering umbilicus. MEASUREMENTS . 4 ♀♀ : whorls =8.2–9.1, H = 6.8–9.2 mm , H/W=2.57–2.77, roundness=0.14–0.17, ribs incl.= 60–68°, apert. incl.= 17–26°, ribs/mm 1 st wh.= 5–6, ribs/mm 4 th wh.=4–9. FEMALE GENITAL ORGANS . Ventral connection of pedunculus to bursa copulatrix. Short, oval seminal receptacle confined to ventral part of body. 2–3 short loops situated close to seminal receptacle apex. Junction of uterus gland moderately far from connection between distal oviduct and pedunculus of bursa copulatrix. Remarks The female genital morphology differs from that of the previous taxa because of the junction of the uterus gland which is not as close to the connection between the distal oviduct and the pedunculus of the bursa copulatrix. The shell morphology is distinctive, with thin, regular ribs and a deeply indented columellar lobe. The p-distance between the two samples assigned to this taxon is 1.7%.