Study of the distribution and ecological requirements of eleven important grasshopper species in Parnassos National Park and proposal of conservation measures for four endemic and endangered species: Parnassiana parnassica (CR), Oropodisma parnassica (EN), Stenobothrus graecus (GR), Glyphanus obtusus (GR). Period: 2021-2022. Funding: Management Agency of Parnassos National Park. Coordinator: BCL.