Fagivorina arenaria (Geometridae, Lepidoptera) endangered species of preserved mountain beech forests: new records from the Czech Republic

We summarize the published data on occurrence of Fagivorina arenaria (Hufnagel, 1767) in the Czech Republic. The species belongs to the European endangered moths. It occurs only very locally and rarely in the Czech Republic. Published records come mainly from the border mountain ranges. Newly we present records from the Beskydy Mts. and the Hrubý Jeseník Mts. On the basis of our observations and published data, F. arenaria can be considered as a representative species of preserved mountain herb-rich beech forests. Due to the very local occurrence of the species, particular associations with mountain primeval forest and decline from some former localities, we argue that the species should be listed in the Red List of Invertebrates of the Czech Republic in the higher categories of threat, i.e. endangered or critically endangered.