Ah, that was what I hypothesized as well, that it was a fusion. On the other hand, stands do change due to damage to the body, as in Silver Chariot. So maybe the world has the body of Jonathan's Stand with the head of Dio's? It is all rather confusing.

Oh! It IS the scarab. My dictionary said beetle, so I was rather disappointed. But there also is Christian imagery, like "angel" and "via dolorosa"