Smaller than Syritta pipiens posted last week
No interactions present.
The size of hoverflies can be strikingly variable, depending upon their sex, the time of year, weather conditions when they developed...etc. Species like the common Syrphus can be very different indeed, and you would assume they were different species, such is the size difference.
My Flickr photos...
Thanks. Will have to try and get a shot of a large and small one on the same piece of goldenrod
Jamie from Briantspuddle
Lat/Lng: 50.7, -2.3
OS grid ref: SY8193