Typical swarm locations
Collectors attend swarms in the terraced housing on the valley floor and lower hillside, along the sycamore and alder riverbank between Ystalyfera and Ystradgynlais, in the hawthorn scrub and bilberry heath on the plantation edge above Cwmllynfell, in stone outbuildings and barn voids on the scattered farms above the village, and in old stone walls on the moorland approaches to Mynydd y Gwair.