Distribution: Very widespread across North Africa and all of Europe.
It is generally common where it is found.
Identification: The green underside is highly distinctive but there is
another species of Callophrys which is very similar - the Chapman's Green
Hairstreak, C.avis. That species is rare, very local and only found near
the coast of the Iberian Peninsula and Mediterranean France plus North Africa.
For separation information please refer to the species page of C. avis.
Flight time: It flies early in the season across its range depending
on locality and altitude. Usually it is not found after mid June but I have odd
records from July and even August.
Habitat: Diverse. Open places to clearings in woodland from sea level
to alpine meadows. Damp or dry conditions. Feeds on a wide range of mostly woody
plants, but also some herbs.
Behaviour: Often sits on leaves of trees and bushes where its green
underside renders it near-invisible. Certainly it is almost impossible to spot a
resting butterfly unless you have seen it land or it moves. Never opens its
wings when resting.