The diversity of moths (Lepidoptera: Heterocera) of Risnjak National Park, Croatia

The results of research into the moth fauna of Risnjak National Park (Primorje-Gorski Kotar County) are presented. The research was mainly conducted in two types of mountain habitats, beech forests and meadow-pastures. Prior to this three-year survey, only 70 moth species were known from the area. During the survey, 564 moth species were recorded at 15 sites, with many rare taxa found only for the second or third time in the country. Three new species were reported for the Croatian fauna: Pharmacis carna , Lasionycta imbecilla and Horisme aemulata . The survey provides valuable baseline data on the composition of moth species in the montane area of Risnjak National Park, which can be used for future research and conservation efforts. Succession is the main threat to habitats in this area, significantly affecting grassland areas in the park.