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Species variable, with examples ranging from bright yellow through to dark brown, and also variable in size. 4 subspecies occur, with the smaller and darker ones frequenting rocky places in northern Scotland and Ireland
Biology & Foodplants
It has one generation, flying from June through to August, larvae feed on low-growing plants, including chickweed (Stellaria media) and sorrel (Rumex)
IMAGES (C) 2009 COLIN DUKE 17129
IMAGES (C) 2009 COLIN DUKE 17498