Cochlostoma (T.) elongatum ( Paulucci, 1879 )

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 : 66-71

Cochlostoma (T.) elongatum ( Paulucci, 1879)

Figs 55 (red dots), 56E, 57–59

Pomatias elongatus Paulucci, 1879a: 13–14 .

Lectotype (here designated)

ITALY • “ Pomatias elongatus Paulucci in Bullet. Soc. Malacol. Ital. Febbraio 1879 pag. 13 n° 1, Foce Del Lucese alpi apuane 5 esempl. ricevuti dal Dr. Del Prete 1877 e da lui raccolti ”; MZUF13605_10158.

Other specimens

ITALY • 2- Mt Prana ; 43.9566° N, 10.3533° E; 2015; Scarlassara leg.; Scarlassara99 • 3- Ponte Stazzemese ; 43.997° N, 10.2949° E; 2011; Hallgass leg.; EZ1089 • 4- Turrite di Gallicano 1; 44.045° N, 10.3877° E; 2015; Scarlassara leg.; Scarlassara86 • 5- Turrite di Gallicano 2; 44.0284° N, 10.3546° E; 2015; Scarlassara leg.; Scarlassara87 • 6- Ponte Tomarlo ; 43.9937° N, 10.2988° E; 2015; Scarlassara leg.; Scarlassara79 .

Type locality

The Marquese Marianna Paulucci , in the original description of the species, mentioned several localities: “ Abita le Alpi Apuane , il Monte Forato, la foce del Lucese, Prana e Gabberi, Ponte Stazzemese in provincia di Lucca...”. By the designation of MZUF 13605_10158 as lectotype, ITALY • 1- Foce del Lucese ; 43.9354° N, 10.3821° E, becomes the type locality .

Description

SHELL. Barely visible riblets on last part of protonch. Teleoconch with two lines of reddish spots on whorls. Ribs strong, more or less whitish and quite irregular in strength, becoming weaker toward aperture. Rather weak lip with gently inwardly curved columellar lobe covering umbilicus.

MEASUREMENTS. 11 ♀♀: whorls= 7.5–8.6, H = 7.2–8.9 mm, H/W=2.4–2.8, roundness= 0.14–0.21, ribs incl.= 57.9–71.5°, apert. incl.= 16.1–28.8°, ribs/mm 1 st wh.= 6–23, ribs/mm 4 th wh.=8–21.

FEMALE GENITAL ORGANS. Posterior connection of pedunculus to bursa copulatrix. Elongated, club-shaped and more or less tortuous seminal receptacle with bent apex. 2–4 loops clustered close to apex of seminal receptacle. Junction of uterus gland far from connection of distal oviduct with pedunculus of bursa copulatrix.

Remarks

Due to the high conchological variability observed among the populations inhabiting the relatively small area of the Apuane, it seems useful to designate a lectotype and a unique type locality.

Figures

Fig. 55. Distribution of samples of the Apuane Alps part of clade B: red dots= Cochlostoma (T.) elongatum (Paulucci, 1879); green dots =C. (T.) montanum (Issel, 1866); orange dots =C. (T.) sospes (Westerlund in Paulucci, 1879). The samples with amplified 16S are marked with a black center.