Trochoidea (Trochoidea) caroni (Deshayes, 1832), with T. (T.) elegans (Gmelin, 1791) and T. (T.) trochlea (Pfeiffer, 1846), belong to a group of species (“elegans group”), which, although considered valid by most authors, show a not completely defined systematic position. In this work, we report four new records (Terracina and Spigno Saturnia for Latium, Sorrento for Campania and Castagneto Carducci for Tuscany) and confirm two historical records (Ischia Island for Campania and Manfredonia for Apulia) of T.

The North African amphibian fauna was once regarded as limited in diversity, but increased field and laboratory  research in the region has subsequently revealed considerable endemism and data such as these are necessary for making objective and justifiable recommendations for conservation.  Our research, coupled with findings from the literature, allow an up-to-date analysis of distribution, status of populations, and actual and potential threats to the continued survival of all species within Tunisia.

In contrast to oceanic, continental islands are expected to show less diversification and endemism and thus phylogeographic signatures of multiple colonization events from adjacent continents due to episodic connections by sea level changes.