Powder Post Beetle
Stephanopachys substriatus
Conservation status data sourced from the IUCN Red List of Threatened Species.
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Stephanopachys_substriatus
Taxonomy & Classification
Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Coleoptera
Family
Bostrichidae
Genus
Stephanopachys
Powder Post Beetle belongs to the family Bostrichidae, order Coleoptera, within the Insecta class.
Species Profile
Species profile data sourced from the IUCN Red List of Threatened Species.
Stephanopachys substriatus faces severe population decline due to widespread loss of its specialized old-growth forest habitat through logging and land conversion. The species' dependence on specific dead wood substrates and fungal associations makes it extremely vulnerable to forest fragmentation and changes in forest management practices that remove decaying wood.
Key Facts
Habitat & Distribution
Inhabits mature and old-growth coniferous and mixed forests, particularly those with abundant dead and decaying wood substrates. The species requires specific microhabitats within fallen logs, dead branches, and fungus-infected wood in temperate forest ecosystems.
Threats
IUCN Red List: Critically Endangered
Stephanopachys substriatus faces severe population decline due to widespread loss of its specialized old-growth forest habitat through logging and land conversion. The species' dependence on specific dead wood substrates and fungal associations makes it extremely vulnerable to forest fragmentation and changes in forest management practices that remove decaying wood.
Habitat fragmentation
Land conversion for agriculture and development
Old-growth forest loss and logging
Removal of dead wood and forest debris
Climate change affecting forest composition
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 | LCLeast Concern | CRCritically Endangered | Lower local risk |
| EU | LCLeast Concern | 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). Powder Post Beetle (Stephanopachys substriatus). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/powder-post-beetle