TIL that there is only one species of beetle that can sting, and it is the only arthropod that stings with its antennae.

https://en.wikipedia.org/wiki/Onychocerus_albitarsis

https://www.reddit.com/r/todayilearned/comments/15p7t3d/til_that_there_is_only_one_species_of_beetle_that/