Ilex Hairstreak Satyrium ilicis, photographed at Chaumussay last June.
Purple Hairstreak, Neozephyrus quercus, photographed in the Parc de Boussay, July 2011.Short-tailed Blue Everes argiades and the Long-tailed Blue Lampides boeticus. I also think that the arachnid enemy here might be crab spiders. I've seen several of the beautiful red and black crab spider species Synaema globosum lurking about in the same Downy Oak tree at Chaumussay that I know the Ilex Hairstreak lays eggs in. They are less than a centimetre long, but will take prey the size of a Honey Bee.
Black Hairstreak Satyrium pruni, in the Brenne. Photograph courtesy of Tim of Aigronne Valley Wildlife.