- apart from a leg apparently growing from its mouth, a perfectly healthy active hoverfly up to the moment it was collected
No interactions present.
Nice photos as usual Jeremy! As you probably know, hoverflies (and other insects) will spend quite a lot of time keeping themselves clean, and I suspect that in the first photo you've caught this insect combing dust and pollen from its eyes. They undergo some quite amazing contortions to allow their legs to reach the parts of the body they need to clean.
The way the abdomen has developed is very odd though.
Entomologist and biological recorder
Lat/Lng: 51.9529, -2.0478
OS grid ref: SO968282