No interactions present.
Not sure I could agree with Pollenia, let alone rudis, but someone else might help you...
My Flickr photos...
...invertebrate - get more help if edit and move:)
It would be good to move this to invertebrates, to stop it appearing under Pollenia rudis sightings, as it can't be confirmed as such.
Lat/Lng: 57.4824, -4.1912
OS grid ref: NH687456
Basking on pararpet wall of a railway bridge