6
Xenomorphon baranowskii - A newly discovered species of beetle that completely lacks wings or elytra
(lemmy.world)
While some species of beetle are known to lack wings as adult females, Xenomorphon is the only known to lack wings as adult males.
For anyone else who doesn’t know what elytra are, they are the “protective wing-cases for the hindwings underneath, which are used for flying. To fly, a beetle typically opens the elytra and then extends the hindwings.”
https://en.m.wikipedia.org/wiki/Elytron