Typical swarm locations
Swarms are reported around Llanwrtyd Wells in the older stone and whitewashed properties of the Neuadd Arms Square and Victoria Road, along the Irfon riverside willows and alder carr toward Abergwesyn, on the moorland-fringe heather margins of the Cwm Irfon nature reserve, and in the remote hill-farm outbuildings of the Abergwesyn and Rhandirmwyn valleys.