A warm, though cloudy day, +18° C. Been to Wimbledon Common, or Putney Heath to be more exact.
Saw a Sargus bipunctatus soldier fly, but couldn’t take a photo. Also saw some yellow-and-black slow-flying fly, which escaped without a more precise ID.
Udea ferrugalis crambid moth, saw quite a few of those:
Birch catkin bugs (Kleidocerys resedae) are everywhere: