Male Bombus lapidarius on the back of a female B. terrestris. Observed for several minutes on Buddleja.
No interactions present.
Certainly looks like that was in the mind of the male! Though to be strict, there is no actual copulation here - the abdomens of the two bees are far from being in contact at the tips. The male is just sitting on her back.
recording wildlife with The Recorder's Year on www.hbrg.org.uk/TRY.html.
Lat/Lng: 51.239, -0.1278
OS grid ref: TQ307505