Cochlostoma (Lovcenia) dalmatinum ( L. Pfeiffer, 1863 )

Zallot, Enrico, Fehér, Zoltán, Bamberger, Sonja & Gittenberger, Edmund, 2018, Cochlostoma revised: the subgenus Lovcenia Zallot et al., 2015 (Caenogastropoda, Cochlostomatidae), European Journal of Taxonomy 464, pp. 1-25 : 13-17

Cochlostoma (Lovcenia) dalmatinum ( L. Pfeiffer, 1863)

Figs 5B , 6B , 9

Pomatias dalmatinum L. Pfeiffer, 1863: 136 –137.

Pomatias turritus Walderdorff, 1864: 508 , 511.

Pomatias (Auritus) dalmatinus – A.J. Wagner 1897: 620, pl. 9, fig. 95a–b.

Cochlostoma (Auritus) dalmatinum – Kobelt 1902: 518.

Auritus dalmatinus – A.J. Wagner 1906: 133.

Cochlostoma dalmatinum – Jaeckel et al. 1957: 171. — Zallot et al. 2015: 85.

Cochlostoma (Turritus) dalmatinum – Zilch 1958: 63, pl. 4, fig. 12.

Diagnosis

The irregular sculpture and its large shell height distinguish C. (L.) dalmatinum from other species of Cochlostoma (Lovcenia) .

Type material

The type series from “Castel Nuovo Dalmatiae” (= Montenegro, Herceg-Novi) ( L. Pfeiffer 1863: 136) was not available for study, but specimens from the type locality were compared (see below) as well as a photograph of a syntype (SMF 160850, ex coll. Parreyss) published by Zilch (1958: fig. 12).

Material examined

MONTENEGRO: Orjen Mts , Kameno, 6 km to Crkvice, 890 m a.s.l., 42.4877° N, 18.5603° E, 29 May 2015, Deli, Erőss and Fehér leg. ( NHMW 110430 /MN/0162, HNHM 100133 ); 2 spec., Hercegnovi, Berg Radoštak, Mar. 1928, Käufel leg. ( NHMW-K 15367 ); 5 spec., Radoštak at the source, Mar. 1928, Käufel leg. ( NHMW-E 28682 /1, NHMW-E 32879 /2, NHMW-K 47084 /2).

Measurements

HNHM 100133 (N= 12): H 11.6–13.3 mm, W 5.3–5.8 mm, Wbw 4.4–4.8 mm, Ha 3.5–4.2 mm, Wa 3.6–4.1 mm.

Description

SHELL. Large, with many (10–11) whorls, H/W ratio 2.63. The apical 2.3–2.4 whorls form the protoconch, which is smooth only on the initial 0.6–0.7 whorl and finely ribbed with closely spaced riblets further on. The protoconch is relatively small, i.e., Dp/D4th =0.36–0.46. The shell is more or less dark horn-brown, without spots. The teleoconch whorls are ribbed with whitish ribs that are irregular in height, spacing and shape. Between these main ribs, there are fine riblets, which have the same colour as the shell. There is no difference in rib distances between the upper whorls and the body whorl. The sculpture fades on the last part of the body whorl behind the aperture. The aperture is relatively small (Ha/H =0.20), with an irregular lip. The lip enlarges on the columellar side before curving abruptly back and covering the umbilicus. The body whorl abruptly enlarges near the aperture, forming a moderately large external lobes.

FEMALE GENITALIA. Large bursa copulatrix, with a pedunculus connected proximally; its proximal lobe smaller that the distal one. Short seminal receptacle, without distal oviduct and confined to the ventral side of the body. Loops of the visceral oviduct situated over the apex of the seminal receptacle. The junction of the uterine gland and the copulatory duct is situated far from the connection between the distal oviduct and the pedunculus of the bursa.

Distribution

Northwest of the bay of Kotor in Montenegro. Wagner (1897) reported this species from ‘Mont Falcone’ (= Mt Radoštak), not far from the site where we have recently collected it. As this area is poorly explored and because it is difficult to access, the species may be more widely distributed than believed earlier (see Gittenberger 1976).

Habitat preference

Unlike C. (L.) erika , this species is not bound to cave environments. We have found it on large limestone cliffs, mostly hidden in shady fissures.

Remarks

Due to the lack of material, Zallot et al. (2015) did not assign this species to any of the subgenera of Cochlostoma . The available anatomical and molecular data now unequivocally support its classification in Lovcenia.

Figures

Fig. 5. Female specimens of Cochlostoma (Lovcenia) Zallot et al., 2015 used for anatomy (shells were destroyed before dissection). A. C. (Lovcenia) erika (A.J. Wagner, 1906) (HNHM 86387). B. C. (Lovcenia) dalmatinum (L. Pfeiffer, 1863) (NHMW 110430/MN/0162). C. C. (Lovcenia) tropojanum sp. nov. (NHMW 111248). D. C. (Lovcenia) jakschae sp. nov. (NHMW 111249). E. C. (Lovcenia) lanatum sp. nov. (HNHM 99861).

Fig. 6. Female genital morphology. See Table 1 for localities and Table 3 for measurements. A. Cochlostoma (Lovcenia) erika (A.J. Wagner, 1906) (HNHM 86387). B. Cochlostoma (Lovcenia) dalmatinum (L. Pfeiffer, 1863) (NHMW 110430/MN/0162). C. Cochlostoma (Lovcenia) tropojanum sp. nov. (NHMW 111248). D1. Cochlostoma (Lovcenia) jakschae sp. nov., Bugarska Peak population (NHMW 111249). D2. Cochlostoma (Lovcenia) jakschae sp. nov., Pejë Pass population (HNHM 97221). E. Cochlostoma (Lovcenia) lanatum sp. nov. (HNHM 99861).

Fig. 9. Cochlostoma (Lovcenia) dalmatinum (L. Pfeiffer, 1863), Kameno, 6 km from Crkvice, Montenegro (NHMW 110430/MN/0162).