On a walk through Cotwall End LNR towards the end of May I spotted these crowds of day-flying moths which had antennae much longer than their bodies. Every so often they would settle on whichever set of nearby leaves were about waist height.
Most of the groups were under trees which put them into deep shade. This group was the exception: they were in a clearing with a nettle patch by the path. The pictures don’t do justice to the iridescence of their wings and bodies.
They are male longhorn moths, probably Adela reaumurella as far as I can tell.