| Family | Lycaenidae |
|---|---|
| Subfamily | Theclinae |
| Genus | Satyrium |
| Species | acaciae |
| Authority | (Fabricius, 1787) |
| English Name | Sloe Hairstreak |
| 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 Sloe Hairstreak is found in dry scrub in woods, at wood margins, or in the open landscape. They are also seen in abandoned vineyards on calcareous soils. When looking for nectar, the butterflies seem to prefer white flowers. Blackthorn or Sloe (Prunus spinosa) is practically the only foodplant of the Sloe Hairstreak, and eggs are laid on branches that are in the sun. The small caterpillars stay in the egg until after the winter, emerging in the spring and feeding on the young Blackthorn leaves. When fully-grown, they leave the foodplant to pupate on the ground in leaf litter.
Albania / Andorra / Austria / Belgium / Belgium: Wallonia / Bosnia and Herzegovina / Bulgaria / Croatia / Czechia / France / France: Mainland / Germany / Greece / Greece: Mainland / Greece: East Aegean Islands / Hungary / Italy / Italy: Mainland / Luxembourg (Regionally Extinct) / North Macedonia / Moldova / Montenegro / Poland / Romania / European Russia / San Marino / Serbia / Serbia: Serbia / Serbia: Kosovo / Slovakia / Slovenia / Spain / Spain: Mainland / Switzerland / European Türkiye / Ukraine /