Clytra quadripunctata vs laeviuscula

Over large parts of northern and central Europe these are the two Clytra spp. that often get confused, so here is a quick and dirty ID help.
Some keys stress that laeviuscula normally has much larger hind spots, that may even blend into an uninterrupted band and that quadripunctata has a much smaller hind spot that doesn't reach the margins of each elytron, but clearly that is NOT a reliable character for ID (see top corner insets).
Best character for photo ID is the pronotum:
The disc is almost smooth (_very_ finely punctate) on laeviuscula and clearly punctate on quadripunctata and the lateral margin is widly emarignate with a rough surface on quadripunctata and only narrowly emarignate and smooth on laeviuscula

That said: On most average photos this is quite hard to appreciate correctly, so always make a point of getting this in focus on a few close-up shots!