Yes - Artemis was another name for Diana the Huntress The theory I once heard is that the testicles were hunting trophies, but of bulls or men? Diana was a virgin huntress so it makes no sense to see the breasts in a nurturing, suckling context. On the other hand if she was a virgin, she would have no healthy interest in mens' testicles. So maybe they were hunting trophies - bulls' balls.

Seems to me that ideas in the ancient world were interconnected to a much greater degree than hitherto thought. We may know something about ancient tools, weapons, buildings and tombs, but we know next to nothing about how they thought.