this black blue beetle is about 3 / 4 cm long
No interactions present.
Went for this species because of the size difference of the last four sections of the antenna and think its a female because of the thinner antenna and fatter abdomen. Did nearly put Melone violaceus because of the blue comment but decided on this because of the antenna.
Also the thorax looks like it has a straight base, M. violaceus have a rounded base.
Syrphus, not arguing, just asking, lol, but dont you think the base of the thorax is too straight to be M. violaceus and M. proscarabaeus does have some bluish colour to it. As for the indentation, M. proscarabaeus are suppose to have a rounded grooth and M. proscarabaeus a more triangle one, i couldnt see either on the photos!
No, I think it fits violaceus, which is the commoner species by far in W and N Scotland. As I said above, I would like a specialist to confirm it. The transverse groove is a good mark for violaceus, and it seems clear here.
recording wildlife with The Recorder's Year on www.hbrg.org.uk/TRY.html.
Lat/Lng: 56.1385, -5.4868
OS grid ref: NR834994