Rosalia alpina
Overview
A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.
The Rosalia longicorn faces severe population declines primarily due to intensive forest management practices that remove dead and dying beech trees essential for larval development. Climate change compounds these pressures by altering montane forest composition and reducing the availability of suitable host trees. Habitat fragmentation isolates remaining populations, limiting genetic exchange and reducing colonization potential for new suitable sites.
Habitat
Rosalia alpina inhabits old-growth and semi-natural beech forests in mountainous regions of Europe, typically at elevations between 500-1,500 meters. The species requires mature beech trees with substantial amounts of dead wood, fallen logs, and sun-exposed dying branches where larvae can develop over 2-4 years.
