No interactions present.
Well, certainly an oil beetle - I'm wondering whether M. violaceus and M. proscarabaeus can be separated by photo as they are fairly similar,
M. violaceus has a groove across the back of the pronotum which I have persuaded myself I can see clearly in both pictures.
recording wildlife with The Recorder's Year on www.hbrg.org.uk/TRY.html.
Hmmm... I've been looking at a couple of sources and I think both can have a groove, but the base of the pronotum is differently curved. However M. violaceus has a bump on the mesonotum which I do think is visible (just) on the left-hand pic. I shall muse some more...
Thanks Dave. I have added a new photo - does this help?
I would make this violaceus on that pronotum character. There is a key in 'British Wildlife' October 2002, which gives:
Pronotum with slight transverse depression at base -> violaceus.
Pronotum with no depression at base -> proscarabeus.
A couple of the pics show the typical violet colour, though not very strongly. M. proscarabeus is typically (but not always) black.
Comments from proper coleopterists welcome!
Thanks for the extra pic Becky, and for the comments Syrphus. With all the above in mind, I (finally) agree it's violaceus,
Buglife are doing an oil beetle survey and would like people to submit all records.
The specimen looks like M. violaceus, the base of the pronotum in M. violaceus is excised (is broadly concave), behind which is a small tooth. This can be seen on the 3rd image. M. proscarabaeus does not have this character.
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