I think it's interesting as there is a common beetle ancestor. Usually, when we find something like this, the answer is because "taxonomy is more art than scie

I think it's interesting as there is a common beetle ancestor. Usually, when we find something like this, the answer is because "taxonomy is more art than science". Like trees or fish. Both exist all over their respective branches of the evolutionary tree. You have fish species that do not have a common ancestor that does not also include "not fish". Same with trees. Two "trees" can exist in groups with "not trees" Although, I guess the picture could also be incomplete. It could just be showing the beetle lineage and not anything else that may branch from those branches. In which case, this could be another case of cancerification. As much as nature loves a crab, it loves to start from a beetle.