| Family | Lycaenidae |
|---|---|
| Subfamily | Polyommatinae |
| Genus | Cacyreus |
| Species | marshalli |
| Authority | Butler, 1898 |
| English Name | Geranium Bronze |
| European Red List 2010 | Not Applicable (NA) |
|---|---|
| EU 27 Red List 2010 | Not Applicable (NA) |
| European Red List 2025 | Not Applicable (NA) |
| EU 27 Red List 2025 | Not Applicable (NA) |
| Habitats Directive | |
| Bern Convention | |
| CITES |
Originally a species from southern Africa, the Geranium Bronze had probably been imported on Pelargonium cultivars, the ordinary or garden geraniums. From there out, because of the large popularity of these plants, it occurs e.g. in Spain and France, but is about to colonize larger parts of Europe, using the Pelargonium cultivars as foodplant. The caterpillars mostly eat the flowers and buds of Pelargonium, but also the rest of the plants. In South Africa, the Geranium Bronze uses wild Geranium species as foodplant, making it very probable that this butterfly will establish itself in the wild in warm parts of Europe. However, in cooler areas, it would be impossible for it to settle permanently, because it has no diapause, and could not survive the winter. It has numerous generations a year, depending on the temperature.
Albania / Andorra / Austria (Irregular Vagrant) / Belgium (Irregular Vagrant) / Belgium: Flanders (Irregular Vagrant) / Bosnia and Herzegovina / Bulgaria / Croatia / Czechia (Irregular Vagrant) / Denmark (Irregular Vagrant) / France / France: Mainland / France: Corsica / Germany (Irregular Vagrant) / Greece / Greece: Mainland / Greece: East Aegean Islands / Greece: Kirti (Crete) / Holy See (Vatican City State) / Italy / Italy: Mainland / Italy: Sardinia / Italy: Sicily / Monaco / North Macedonia / Malta / Montenegro / Netherlands (Irregular Vagrant) / Portugal / Portugal: Mainland / San Marino / Serbia (Irregular Vagrant) / Serbia: Serbia (Irregular Vagrant) / Slovenia / Spain / Spain: Mainland / Spain: Canary Islands / Spain: Balearic Islands / Spain: Sp. North African Territories / Sweden (Irregular Vagrant) / Switzerland / European Türkiye / United Kingdom (Irregular Vagrant) / United Kingdom: Great Britain (Irregular Vagrant) / United Kingdom: Gibraltar /