At Linlithgow Bridge, the River Avon forms the boundary between vice county 86 (Stirlingshire) and vice county 84 (West Lothian). Mark Cubitt has for some time recorded Butterbur associated with areas of its foodplant on the West Lothian side of the river and on 13th August, he crossed the water and proved that the colony extends into Stirlingshire. Hopefully this finding will stimulate recorders to look for the species in other parts of the vice county where the foodplant grows.
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