Active on Broad-Leaved Ragwort. Shield-like thorax, elytra punctate. Relatively large eyes, dark olive colour throughout.
No interactions present.
Longhorn beetle of some sort, don't know which though.
Check it out. Size should be another clue. Blethisa is about the 10-15mm mark, carabus 16-23mm.
The granules on the carabus are in nice sharp rows as well, compare with the ruffled texture of blethisa and its obvious punctures.
I've been given a very good site to find blethisa - but I seem to have a blind spot for it! Now I wonder if I'm not looking high enough on vegetation....
Sorry, should have said: about 12mm.
Thanks to both.
This beetle is a resident of wet places. see
(Noting your location: Woodwalton Fen NR)
Lat/Lng: 52.4515, -0.1889
OS grid ref: TL231852