The buff arches (Habrosyne pyritoides) is a moth of the family Drepanidae. It is found throughout Europe and is well distributed in the British Isles except the far north of England and all of Scotland. This is a distinctive and attractive species, its grey-brown forewings marked with bold buff-orange “arches." The hindwings are grey with white margins. The wingspan is 40–45 mm. It flies from June to August and is attracted to light and sugar. 1. \n* The flight season refers to the British Isles. This may vary in other parts of the range. \n* \n* Both sides