Yes, this one looks exactly like the one I saw. This was in an area where there also were some Chalcopteroides columbinus - almost didn't notice they were different beetles at first as the colour is so similar
Not a Chalcopteroides, but the much rarer Hemicyclus punctulatus. Although the colours are similar, it can be distinguished from Chalcopteroides by the narrow flanges on the sides of the elytra; wider flanges on the sides of the pronotum. Other differences that "chriselidie" noticed are the more widely rounded shape (hence the 'cyclus' part of the name), and the lack of striae (lengthwise grooves) on the elytra.
I don’t think so. I’ve only got one subvicina identified by Shelley and it’s a smaller slightly narrower beetle then the vicina I have seen. Pattern can be pretty much the same and colour 🤷♂️.. it can also vary a bit.