A Bumblebee Conservation Trust report:-
“A population of the very rarely sighted Ruderal bumblebee (Bombus ruderatus) was discovered in Wales this week by staff from the Bumblebee Conservation Trust.
The Ruderal bumblebee is one of our largest bumblebee species, and is thought to be largely restricted to the south of England, after a considerable decline through the 20th century.
Earlier this week two staff from the Bumblebee Conservation Trust found a number of newly emerged Ruderal bumblebee queens foraging on foxglove near Brechfa in central Carmarthenshire…. “
https://www.bumblebeeconservation.org/rare-bumblebee-population-discovered-in-wales/