Reverdin's Blue
CR

Reverdin's Blue

Plebejus argyrognomon

UnknownLCEULCEU

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Plebejus_argyrognomon

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

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.

Threat summary

Habitat

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.

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Frequently asked questions

Why is Reverdin's Blue classified as Critically Endangered?
Reverdin's Blue is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. 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.
Where does Reverdin's Blue live?
Reverdin's Blue occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Reverdin's Blue?
The main threats to Reverdin's Blue are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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