Cochlostoma (Turritus) lacazei, 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 : 80-83

Cochlostoma (Turritus) lacazei sp. nov.

urn:lsid:zoobank.org:act:61C853D1-BC2F-4B75-B336-D51638320A8E

Figs 65 (yellow dots), 66E–F, 69D, 70–71

Differential diagnosis

The other species of Cochlostoma living in the Karawanken Alps are distinguished as follows: C. (Cochlostoma) septemspirale (Razoumowsky, 1789) ( Fig. 69A ), C. (Clessiniella) anomphale Boeckel, 1939 ( Fig. 69B 1 ) and C. (Clessiniella) tergestinum (Westerlund, 1878) ( Fig. 69B 2 ) have a pedunculus of the bursa copulatrix connected apically, whereas it is ventrally connected in C. (T.) lacazei sp. nov. It can be distinguished from C. (T.) gracile ( Fig. 69C ) and the other taxa of clade B because of the long seminal receptacle, reaching the dorsal side of the body (short and confined to the ventral side of the body in clade B).

Etymology

This species is dedicated to the French journalist André Lacaze (1915–1986).

Types

Holotype

SLOVENIA • ♀; 1- Loibl Pass 1; 46.4236° N, 14.269° E; De Mattia and Zallot leg.; 2010; RMNH. MOL.507276 .

Paratypes

SLOVENIA • 1 ♀; same collection data as for holotype; RMNH. MOL.507277 • 1 ♂; same collection data as for holotype; RMNH. MOL.507278 .

Other specimens

AUSTRIA • 5- Johannsenruhe ; 46.4533° N, 14.1599° E; Mildner leg.; EZ0186 • 6- Trögern ; 46.4363° N, 14.4858° E; 2012; Groenenberg leg.; Dick Groenenberg 4532 • 7- entrance to the Tscheppaschlucht ; 46.4876° N, 14.2769° E; 2015; Sattmann et al. leg.; NHMW109000 /AL/00718 • 8- Trögener Klamm 1; 46.4608° N, 14.5038° E; 2015; Sattmann et al. leg.; NHMW109000 /AL/00713 .

SLOVENIA • 2- Loibl Pass 2; 46.4299° N, 14.2607° E; 2010; De Mattia and Zallot leg.; EZ1008 • 3- Loibl Pass 3; 46.4283° N, 14.2738° E; 2010; De Mattia and Zallot leg.; EZ1009 • 4- Tržič ; 46.3572° N, 14.2958° E; 2000; Zallot leg.; EZ0179 .

Type locality

SLOVENIA • 1- Loibl Pass 1; 46.4236° N, 14.269° E .

Description

SHELL. Closely spaced riblets on last part of protoconch. Teleoconch spotless, with rounded and moderately strong ribs. Moderately strong lip with columellar lobe quite abruptly inwardly curved to cover umbilicus.

MEASUREMENTS. 12 ♀♀: whorls= 7.1–8.2, H = 6.9–8 mm, H/W=2.49–2.7, roundness= 0.1–0.13, ribs incl.= 59–66°, apert. incl.= 17–24°, ribs/mm 1 st wh.= 6–12, ribs/mm 4 th wh.=7–15.

FEMALE GENITAL ORGANS. Ventral connection of pedunculus to bursa copulatrix. Seminal receptacle tortuous, elongated and thick. No proper distal oviduct, seminal receptacle gradually narrowing toward junction with pedunculus of bursa copulatrix. Loop path consisting of series of loops clustering close to seminal receptacle apex. Uterus gland connection close to distal oviduct-pedunculus junction.

Remarks

This species living in the Karawanken Alps has probably been reported in Austrian checklists ( Klemm 1973; Edlinger & Mildner 1979) as Cochlostoma (Turritus) gracile . The shell is easily misidentified, but the analysis of the female genitals shows a different morphology of the seminal receptacle and loop paths. At the type locality, the species lives syntopically with C. (Cochlostoma) septemspirale on a S-exposed talus slope.

Additional note to clade B

The other B supported (PP=99, BS =99) subclade includes two branches, with the first distributed along the northern part of the Balkan Peninsula and two species of the central Appenine in Italy, and the second inhabiting the northern and central part of the Appenine in the Italian peninsula. The samples within the subclade share the same female genital morphology but are highly differentiated in the shell morphology. The p-distances among samples, despite this evident shell diversity, are relatively low (0.7–1.9% between heterospecific samples).

Figures

Fig. 65. Distribution of samples of clade B part of the same branch: cyan =Cochlostoma (T.) sardoum (Westerlund, 1890); yellow =C. (T.) lacazei sp. nov. Black center for the samples with amplified 16S.

Fig. 69. Female genitals morphology of the species of Cochlostoma Jan, 1830, living on the Karawanken Alps and C. (Turritus) gracile (Pfeiffer, 1849). A. C. (Cochlostoma) septemspirale (Razoumowsky, 1789). B1. C. (Clessiniella) anomphale Boeckel, 1939. B2. C. (Clessiniella) tergestinum (Westerlund, 1878). C. C. (Turritus) gracile. D. C. (Turritus) lacazei sp. nov.

Fig. 1. The “Sectio” Turritus in Westerlund, 1883. A. Cochlostoma (Eupomatias) henricae (Strobel, 1851), Sella Chianzutan, I (EZ0274). B. Cochlostoma (Turritus) stossichi (Hirc, 1881), Ponikve, HR (ZMB170.256).

Fig. 2. Sampling localities.