On the underside of an elder (sambucus) leaf
No identification made yet.
No interactions present.
These look very like eggs of a moth to me - you often see patches like this on the cardboard inside moth -traps. As to the species, we may never know, but a classic method is to rear them in captivity - or re-visit the site and see if there are any identifiable caterpillars on the bush. A number of moth larvae feed on elder including Brown-tail, Buff Ermine, Dot Moth, Emperor Moth, The Engrailed, Swallow-tailed Moth and The V-pug.
Lat/Lng: 52.9, 0.9
OS grid ref: TF9842