| Family | Lycaenidae |
|---|---|
| Subfamily | Polyommatinae |
| Genus | Pseudophilotes |
| Species | baton |
| Authority | (Bergsträsser, 1779) |
| English Name | Baton Blue |
| European Red List 2010 | Least Concern (LC) |
|---|---|
| EU 27 Red List 2010 | Least Concern (LC) |
| European Red List 2025 | Least Concern (LC) |
| EU 27 Red List 2025 | Least Concern (LC) |
| Habitats Directive | |
| Bern Convention | |
| CITES |
The Baton Blue can be found on dry, grassy, and flower-rich vegetation, especially on warm patches. The butterflies are often seen on flowers, drinking nectar. The females lay their eggs on the flowers and leaf stalks of various species of thyme (Thymus spp.), savory (Satureja spp.), lavender (Lavandula spp.), and mint (Mentha spp.). The caterpillars feed on the flowers and developing seeds of the foodplant. They are attended by ants (e.g. Myrmica scabrinodis and Lasius alienus). The Baton Blue passes the winter as a caterpillar or a pupa, and has two generations a year.
Andorra / Austria / Belgium (Regionally Extinct) / Belgium: Wallonia (Regionally Extinct) / Czechia / France / France: Mainland / France: Corsica / Germany / Italy / Italy: Mainland / Italy: Sicily / Luxembourg (Regionally Extinct) / Poland (Regionally Extinct) / Portugal / Portugal: Mainland / Spain / Spain: Mainland / Switzerland /