Typical swarm locations
Collectors regularly attend swarms in the riverside willow and alder of the Don at Denaby Ings and Sprotbrough Flash, in the himalayan balsam and buddleia of the former Manvers colliery nature reserve, in the mature lime and horse chestnut of the older Mexborough High Street properties, and in the chimney pots and eaves of the Victorian brick terraces of Queen Street and Church Street.