Latin name - Callophrys rubi
Flight period - Early April to late August
Wingspan 2.5 to 3 cm, 1 to 1.2 inch.
Upperside brown, undersides green. The green undersides have white spots forming a feint white 'streak' on the hind wings. The extent of the white marking is highly variable and on some individuals almost absent. This butterfly is the most widespread of our hairstreaks.