Reverdin's Blue
Plebejus argyrognomon
Conservation status data sourced from the IUCN Red List of Threatened Species.
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Plebejus_argyrognomon
Taxonomy & Classification
Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Lepidoptera
Family
Lycaenidae
Genus
Plebejus
Reverdin's Blue belongs to the family Lycaenidae, order Lepidoptera, within the Insecta class.
Species Profile
Species profile data sourced from the IUCN Red List of Threatened Species.
Reverdin's Blue faces severe population declines due to habitat loss from agricultural intensification and urban development across its range. The species' dependence on specific host plants and fragmented grassland habitats makes it particularly vulnerable to landscape changes and climate-driven shifts in vegetation communities.
Key Facts
Habitat & Distribution
Dry grasslands, chalk downs, limestone slopes, and flower-rich meadows typically between 200-2000m elevation. The species requires areas with abundant leguminous host plants, particularly crown vetch and other Fabaceae species, along with suitable nectar sources.
Threats
IUCN Red List: Critically Endangered
Reverdin's Blue faces severe population declines due to habitat loss from agricultural intensification and urban development across its range. The species' dependence on specific host plants and fragmented grassland habitats makes it particularly vulnerable to landscape changes and climate-driven shifts in vegetation communities.
Agricultural intensification and conversion of grasslands
Climate change altering suitable habitat conditions
Loss of host plant species
Urban development and habitat fragmentation
Overgrazing and changes in land management practices
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). Reverdin's Blue (Plebejus argyrognomon). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/reverdins-blue