Polyommatus semiargus semiargus
A commoner of the small blues with a wingspan of 32-38 mm, females are frequently larger and brown while males are a deep violet-blue with white wing fringes. The mazarine inhabits a variety of habitats, including riversides, woodland, forest clearings, damp meadows, fallow, flower-rich grassland, and shrubby slopes. Host plants include the legumes: melilot (Melilotus officinalis), greenweeds (Genista spp.), red clover (Trifolium pratense), and bladder clover (T. physodes). It flies May through early August, and could often be seen basking in groups.
Attribution: Sharp Photography (Wikipedia Creative Commons)
Attribution: Frank Vassen (Wikipedia Creative Commons)
Attribution: Harald Supfle (Wikipedia Creative Commons)
Attribution: Hectonichus (Wikipedia Creative Commons)