No interactions present.
The spotted wings and the dark triangles on the upper abdomen are characteristic of this species of mayfly.
Chris Brooks - www.dragonfly-images.co.uk
My Flickr site - www.flickr.com/photos/ceb1298
Using your suggested ID, I have put up links to the other 2 Ephemera re. the British list
The two sites below show it as depicted, as do all iSpot obs,
Have a good day,
An iSpot Project- HELP WITH IDS - UK & Ireland Community - PLANTS
Excellent links Mick, now I've looked at them I'm quite happy this is vulgata. Regards Chris
Lat/Lng: 53.2075, -0.5587
OS grid ref: SK963687
Boultham Park Lake