The following famous tale was featured in Jung’s Synchronicity: An Acausal Principle (1952):
A young woman I was treating had, at a critical moment, a dream in which she was given a golden scarab. While she was telling me this dream, I sat with my back to the closed window. Suddenly I heard a noise behind me, like a gentle tapping. I turned round and saw a flying insect knocking against the window-pane from the outside. I opened the window and caught the creature in the air as it flew in. It was the nearest analogy to a golden scarab one finds in our latitudes, a scarabaeid beetle, the common rose-chafer (Cetonia aurata), which, contrary to its usual habits, had evidently felt the urge to get into a dark room at this particular moment. I must admit that nothing like it ever happened to me before or since.
Synchronicity: An Acausual Principle (1952)
The Collected Works of C.G. Jung
Princeton University Press Edition