Spot the differences

Pics of different beetles in the same area
Lengths are variable ranging from less than 10 mm to ~ 15 mm
Differences in the elytra markings are evident on the photo's.
The amount of pubescence is also variable
The above would suggest (according to Literature) that these are different species.
We think that this is rather a small part of evidence that the Ceroctis exclamationis group is in dire need of revision