The Common Blue Butterfly (Polyommatus icarus) were first defined in 1775 and are part of the Lycaenidae family of butterfly.
The males have bright blue uppersides, whereas females are primarily brown with a variable amount of blue. These are the most widespread of the Lycaenid family in Britain.
Their habitats include grasslands, heaths, woodland clearings, and roadside verges.
Despite the general downturn in butterfly numbers generally, the Common Blue Butterfly is not considered a conservation concern at present.
For more information see the UK Butterflies website.