Two limestone ‘islands’ in central northern Greece, six new clausiliid taxa, three kinds of microarmature (Gastropoda, Pulmonata, Clausiliidae)

Two isolated limestone outcrops in northern Greece were searched for terrestrial molluscs. Seven taxa of clausiliids were recorded, six of them new to science: Montenegrina dennisi spec. nov., M. dennisi protruda subspec. nov., M. janinensis maasseni subspec. nov., Macedonica pindica spec. nov., M. pindica bellula subspec. nov., Idyla castalia yeruni subspec. nov. The microarmature of the clausilium is described for a representative of each of the three genera involved.