Seen feeding on Alexanders on same coastal path in 2010 (one) and 2011(several)
No interactions present.
My ID has been confirmed by Sawfly experts D and JP Balmer on www.hymis.de who say: "Yes Abia (= Zaraea) lonicerae (Linnaeus 1758) according to the thickening of the segments of the antennae."
Nick Upton, naturalist and photographer.
Lat/Lng: 50.5806, -4.9193
OS grid ref: SW934797