Cochlostoma (T.) pallgergelyi, Zallot & Kamchev & Schilthuizen & Fehér & Mattia & Gittenberger, 2024

Zallot, Enrico, Kamchev, Panche, Schilthuizen, Menno, Fehér, Zoltán, Mattia, Willy De & Gittenberger, Edmund, 2024, Cochlostoma Jan, 1830 revised: an overview of the subgenus Turritus Westerlund, 1883 and its species (Caenogastropoda, Cochlostomatidae), European Journal of Taxonomy 927, pp. 1-163 : 36-38

Cochlostoma (T.) pallgergelyi sp. nov.

urn:lsid:zoobank.org:act:AD1709F8-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 .

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%.

Figures

Fig. 26. Distribution of taxa part of clade A: cyan dots =Cochlostoma (T.) reitteri (Boettger, 1880); green dots =C. (T.) pallgergelyi sp. nov.; red dots =C. (T.) pageti Klemm, 1962. Black center indicates samples with amplified 16S.