Sehirus morio

I haven't seen a vernacular name attributed this this shieldbug yet - I wonder if it will become known as Alkanet Shieldbug or Green Alkanet Shieldbug in future?

This appeared in my vane trap not far from where Green Alkanet is growing rampantly. The pale second antennal segment is traditionally a distinctive feature of Forget-me-not Shieldbug Sehirus luctuosus, but care needs to be taken to eliminate Sehirus morio which is now in the UK and apparently increasing. According to NatureSpot that species is supposed to be >8mm (this was 7.6mm) and has a pale (vs. brown) wing membrane (which I expect is more useful if you are able to compare specimens - but this appeared to be pale brown and the difference is not clear in photos of both species online). So, on the basis of the size I chalked this up as luctuosus. However, I decided to have one more look to see if I could find any more characters separating these two, and found a tweet by Justin Walker referring to morio as lacking a hint of bronze sheen (I can't see any) and having the rostrum reaching beyond the middle coxae. Well on this one the rosturm DOES extend beyond the middle coxae, to just beyond the front of the rear coxae. So could it be morio after all? Not entirely sure, I sought advice from Justin and he has now come back to me and said it looks like morio.

Sehirus morio showing rostrum (3 views with increasing zoom), North Elmham (Norfolk, UK), 10th May 2025