Nivellia sanguinosa

The tegelröd blombock (Nivellia sanguinosa) is a critically endangered longhorn beetle species endemic to Scandinavia. This distinctive red-colored beetle belongs to the family Cerambycidae and is characterized by its relatively small size and specialized ecological requirements. The species inhabits old-growth deciduous forests, particularly those containing mature oak, birch, and other broadleaf trees where it depends on specific deadwood substrates for larval development.

Adult beetles are active during summer months and play a role in forest ecosystem processes through their wood-boring activities. The species has experienced severe population declines due to extensive habitat loss from intensive forestry practices, urbanization, and the removal of dead and dying trees from managed forests. Modern forest management techniques that prioritize timber production have significantly reduced the availability of suitable breeding substrates, fragmenting remaining populations.

Climate change may pose additional pressures through altered forest composition and increased frequency of extreme weather events. Conservation efforts focus on habitat restoration and the implementation of forest management practices that retain deadwood and maintain old-growth forest characteristics. Protected area designation and collaboration with forestry stakeholders are essential components of recovery strategies.

Research initiatives aim to better understand the species' specific habitat requirements and population dynamics to inform targeted conservation interventions. The critically endangered status reflects the urgent need for immediate action to prevent extinction of this specialized forest beetle.

This species inhabits old-growth deciduous forests, particularly those with mature oak and birch trees. The beetles require specific deadwood substrates from dying or dead broadleaf trees for larval development and reproduction.