No interactions present.
I put my 'rostrata' with fine black markings (which you id-ed as rostrata Chris and I agreed) on diptera info and was told 'probably female campestris'.. anyway it stands as rostrata, and my confusion deepens. How do you tell here, size of conk? I had to ignore one this size this morning as I waited for something 'more important', though I did get a pic. Are female campestris snouts smaller then?
latest pics and diptera videos
I have to admit my knowledge is limited. I went for R. campestris for the reason stated, bold black tergite borders. I'll have to let Ophrys answer this more fully as I'm only treading water.
Chris Brooks - www.dragonfly-images.co.uk
My Flickr site - www.flickr.com/photos/ceb1298
Easiest just to refer you to Steven Falk's excellent site...
If you look at those, this is definitely campestris, appearing to be extensively dark on the tergites. I don't remember your rostrata posting...I'll have a look for it.
My Flickr photos...
Certainly looks pretty pale on the abdomen, scutellum is orange, snout looks shortish, but I don't have enough experience of rostrata to call that one...you need Roger Morris to comment, I think.
the one I saw this morning was dark like this and showed a 1mm wide abdomenal black stripe running lengthways as it sluggishly flew. For a second I thought it the big cheilosia that hangs around here, definitely dark like this with a snout as big
Lat/Lng: 51.7114, -4.7792
OS grid ref: SN080050