Igor Balashov

Distribution patterns of terrestrial mollusks in the chalk steppe and neighboring phytocenoses of the Oskol River valley in the Dvorichanskyi National Nature Park, Ukraine

A total of 39 terrestrial mollusk species have been found in the study region, including rare species such as Helicopsis striata, Pupilla triplicata, Truncatellina costulata, Vertigo angustior, Vallonia enniensis, and Vitrea crystallina. Their distribution over different steppe, forest, and floodplain phytocenoses in the Oskol River valley is discussed. Of special interest are data on the distribution patterns of terrestrial mollusks in the mosaic landscape of the chalk steppe (including rock outcrops and scrub of trees and shrubs), which have not been described previously.

TERRESTRIAL MOLLUSKS (GASTROPODA) OF THE SLOVECHANSKO-OVRUTSKY RIDGE (ZHYTOMYR REGION, NORTHERN UKRAINE)

Abstract Thirty-five species of terrestrial mollusks were found in the Slovechansko-Ovrutsky ridge. Findings of Clausilia cruciata, Ruthenica filograna and Monachoides vicinus are especially interesting. Reproductive system of Morlina glabra is described. Problems of the conservation of terrestrial mollusks in the region are discussed. На территории Словечанско-Овручского кряжа зарегистрированы 35 видов наземных моллюсков. Особо интересны находки таких видов как Clausilia cruciata, Ruthenica filograna и Monachoides vicinus. Приведено описание половой системы Morlina glabra. Обсуждаются проблемы охраны наземных моллюсков в регионе

Invasive Land Snail Oxychilus Translucidus (Stylommatophora, Zonitidae) in the Catacombs of Odesa (Ukraine)

Abstract A finding of the subterranean population of the Caucasian invasive snail on the depth of 30 m below Odesa in Southern Ukraine is discussed.

Terrestrial Molluscs of the Tsyr-Pripyat Area in Volyn (Northern Ukraine): the First Findings of the Threatened Snail Vertigo Moulinsiana in Mainland Ukraine

Abstract 26 species of terrestrial molluscs were found in the studied area, including the rare and globally threatened Vertigo moulinsiana that is listed in “Habitats Directive” of the EU and in numerous red lists. Until now it was known in Ukraine only by one population in the Crimea that became extinct in 2014. Its conservation status, taking threats into account, is considered to be “Critically Endangered” on the national level in Ukraine. The characteristics of the phytocenoses to which it is restricted and the associated molluscan faunas are discussed.