Typical swarm locations
Collectors here attend swarms on the limestone cliff-top grassland and quarry floor scrub around the Portland Bill RSPB reserve, in the old dry-stone walls and outbuildings of the former quarry workers' cottages at Fortuneswell, Easton and Weston, in the ivy-covered stone walls of the older church gardens and streets, and in the gorse and bramble scrub on the commons and unfenced quarry margins inland from the cliffs.