Cochlostoma (T.) zawinkanum ( Wagner, 1906 )

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 : 22

Cochlostoma (T.) zawinkanum ( Wagner, 1906)

Figs 14 (white dot), 18

Auritus sturanii zawinkanus Wagner, 1906: 92–101 , 121–140, pls 3–4.

Syntypes

SLOVENIA • 1 ♀, 1 ♂; “ Höhle Zawinka bei Laze , Krain (vom Author), Cochlostoma sturanyi zawinkanum AJW ”; coll. W. Klemm; NHMWK 51883 • 1 ♀, 1 ♂; “ Eingang zur Höhle Zawinka bei Laze , Inner Krain , Auritus sturanii zawinkanus Wagner ”; MIZPASW 7019 .

Type locality

SLOVENIA • 1- Zawinka cave , Laze; 45.7351° N, 14.0682° E .

Description

SHELL. Closely spaced riblets on last part of protoconch. Teleoconch spotless, with rounded and moderately strong ribs, slightly weaker approaching aperture. Relatively strong and developed lip. Columellar lobe inwardly curved quite abruptly to cover umbilicus.

MEASUREMENTS. 2 ♀♀: whorls =7.2–7.5, H = 6.5–6.8 mm, H/W=2.49–2.58, roundness=0.13–0.14, ribs incl.= 63–63°, apert. incl.= 17–17°, ribs/mm 1 st wh.= 12–15, ribs/mm 4 th wh.= 12–25.

FEMALE GENITAL ORGANS. Not known.

Remarks

The shell morphology of the syntypes is very similar to that of C. (T.) stussineri and the type localities of the two taxa are only 5 km apart. A strong resemblance is also seen with the samples from Trnovski Gozd (in Appendix as NFS153), as apparently also noticed by Wagner, who had in his collection a sample from this area (“Tarnowaner Wald”) classified as “ sturanyi zawinkanum ”.

For these reasons, the status of this taxon remains uncertain. We tentatively consider it as belonging to this clade, despite the lack of molecular and female genital data because of the strong similarity of the shell with that of C. (T.) stussineri .

Figures

Fig. 14. Distribution of samples part of clade A: cyan dots= Cochlostoma (T.) stussineri (Wagner, 1897); red dots= C. (T.) patulum (Draparnaud, 1801); white dot =C. (T.) zawinkanum (Wagner, 1906). Black center for the samples with amplified 16S.