摘要

We consider Zonites herculeus Rambur, a Pleistocene fossil land snail of the French Riviera described at the end of the 19th century, a synonym of Retinella olivetorum (Gmelin), a shade loving species until now considered endemic to Italy. We report the recent discovery of both living and Holocene R. olivetorum near Aix-en-Provence (France), about 250 km from the western boundary of its main range. The origin of this disjunct range is discussed. The most consistent hypothesis is the fragmentation of a large Eemian range during the succeeding glacial stage. The persistence of the species through scattered refugia is considered. The resilience of the only French R. olivetorum population to wildfires is also examined.

  • 出版日期2012-8