Dr. Fűköh Levente szerk.: Malakológiai Tájékoztató 16. (Eger, 1997.)
MAJOROS,G. - NÉMETH, L.: New localites representing the northwesternmost occurrences of Serrulina serrulata Pfeiffer and Caspiophaedusa perlucens Boettger (Clausiliidae: Serrulininae)
1997 16: 73-74 New localités representing the northwesternmost occurrences of Serrulina serrulata Pfeiffer and Caspiophaedusa perlucens Boettger (Clausiliidae: Serrulininae) G. Majoros and L. Németh Abstract: The authors have collected the two species at new localities which represent the northwesternmost points of occurrence in their distribution area. Serrulina serrulata L. Pfeiffer Locality: Upper regions of the Mala- and Velika Ugolka valleys in the Ugolskiy massive near Hust and Tyachevo, on the inner (Danube tributgary) side of the Ukrainain Eastern Carpatians Habitat: Moist limestone valleys, close to the stream, in undisturbed beech forest. Serrulina serrulata was found in and under fallen decaying trees and litter. Material: 143 mostly live adult and several juvenile specimens. This species inhabits a large area including the western part of the Greater Caucasus, the eastern and southern coastal regions of the Black sea with adjacent regions of the Balkan peninsula. Here most of the known localities are in southeastern Bulgaria and they become more and more sporadic towards the north reaching the vicinity of Bucharest (Nordsieck, H. 1978), Dobruja and appartenly even Iasi (Likharev, I. M. 1962, Grossu A. V. 1981). The occurrence of Serrulina serrulata in the Ukrainian Carpathians is not unexpected since Likharev (1962) mentions unconfirmed data from this region with reference to Levushkin's doctoral theses. Nevertheless, Levushkin has not published his data and thus they were never accepted without reservations (Likharev I. M. 1962, Nordsieck A. V. 1978). Caspiophaedusa perlucens O. Boettger Locality: The valley of the Aragvi river near Anahuri. The site lies at km 32-33 along the main highway running to the north from Tbilisi. Habitat: Undisturbed beech forest in the vicinity of a streemlet and its supporting spring. The specimens were collected from fallen, decaying trees, tree stumps and litter. Material: 120 mostly live adult and numerous juvenile specimens. According to Likharev (1962), the present distribution area of Caspiophaedusa perlucens consists of three major isolated blocks of forestland: (i) the eastern part of the Greater Caucasus, (ii) the northeastern slopes of the Lesser Caucasus and (iii) the northern side of Talish and the Elburz mountains. The new locality reported here lies isolated from these regions. Such a pattern of distribution strongly suggests that these isolated areas are remnants of a once continuous range.
