Rhagie ermite
Rhamnusium bicolor
Conservation status data sourced from the IUCN Red List of Threatened Species.
Taxonomy & Classification
Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Coleoptera
Family
Cerambycidae
Genus
Rhamnusium
Rhagie ermite belongs to the family Cerambycidae, order Coleoptera, within the Insecta class.
Species Profile
Species profile data sourced from the IUCN Red List of Threatened Species.
Rhamnusium bicolor faces severe population declines due to widespread deforestation and habitat fragmentation across its range. The species' dependence on mature forest ecosystems makes it particularly vulnerable to logging activities and agricultural conversion, while its specialized larval requirements for specific host trees further compound conservation challenges.
Key Facts
Habitat & Distribution
This longhorn beetle inhabits mature deciduous and mixed forests, particularly those containing its preferred host trees including oak, beech, and other hardwood species. The species requires well-established forest ecosystems with dead or dying wood for larval development.
Threats
IUCN Red List: Critically Endangered
Rhamnusium bicolor faces severe population declines due to widespread deforestation and habitat fragmentation across its range. The species' dependence on mature forest ecosystems makes it particularly vulnerable to logging activities and agricultural conversion, while its specialized larval requirements for specific host trees further compound conservation challenges.
Agricultural expansion
Deforestation and logging
Habitat fragmentation
Loss of host tree species
Urban development
National vs Global Threat Status
How this species is assessed at the national level compared to its IUCN global status (CR).
| Country | National Status | Global Status | Comparison |
|---|---|---|---|
| EU | NTNear Threatened | CRCritically Endangered | Lower local risk |
| EU | NTNear Threatened | CRCritically Endangered | Lower local risk |
National Red List data sourced from the National Red List Project (nationalredlist.org, ZSL) and country-specific Red List authorities.
Community Sightings
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Sources & Attribution
How to Cite
IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS
GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org
National Red Lists: ZSL (2025). National Red List. Zoological Society of London. Available at: https://www.nationalredlist.org
This page: SpeciesRadar (2025). Rhagie ermite (Rhamnusium bicolor). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/rhagie-ermite