Zaraea species,this cimbicid or Club-Horned sawfly just could be Zaraea lonicerae. Seen on hedge in an urban (Bristol) park
No interactions present.
I think this probably is Z. lonicerae. The antennae are much darker than the commoner and quite similar Abia sericea. It's often called the "black-horned sawfly". I have photographed sawflies looking like this several times in Cornwall and had one of my pics confirmed as likely to be Z. lonicerae by a Sawfly expert (and an A. sericea image from Wiltshire with paler antennae confirmed on this site recently). I could post some of my Zaraea images for comparison maybe. It's recorded very patchily but is maybe often overlooked. Larval foodplants are honeysuckle and snowberry I believe so an urban location is possible.
Nick Upton, naturalist and photographer.
Lat/Lng: 51.4731, -2.5878
OS grid ref: ST592750