Holly Blue butterfly

Holly Blue butterfly

Observation - Holly Blue butterfly - UK and Ireland. Description: It barely moved so hard to see upper side of wings, but, I think it may be female from underside win

It barely moved so hard to see upper side of wings, but, I think it may be female from underside wing markings. Almost white underside, with black markings. These black ones were particularly pale around the forewing fringe and (I think) absent from hind wing fringe. Black and white striped antennae. Fairly small butterfly.