Known as an aphrodisiac, the Spanish fly is not a fly, but rather a species of what insect? Explain

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Known as an aphrodisiac, the Spanish fly is not a fly, but rather a species of what insect? Explain

https://www.youtube.com/watch?v=CA7_mVxjyc8

https://www.threads.net/@heavyweightwriting/post/DGJyg8lT-CK