Buggender is a xenogender or neurogender that is highly connected to bugs. It may be used by someone who species regresses, but it doesn't have to be. This could also be an aesthetigender that is connected to bugs.
Some subsets to this includes...
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The flags for buggender was made by 'Trav is a minor' (@trrrrav) on Twitter, on October 15, 2020.[1]