Answer: I found two on the Blue Moon Butterfly. The BMB evolved with a new gene that renders male butterflies immune to the Wolbachia bacteria passed down from the mother which kills males before they hatched. The bacteria was discovered in the butterflies by Greg Hurst in the 1990s.
Explanation: To find them, look up "blue moon butterfly." One website should be called Berkely(.)edu. The other can be found by looking up "wolbachia butterfly." The website is called theatlantic(.)com.