@beyatreez
It may have been a mistranslation, since the wiki says he was a rhinocerous beetle. I read the Clown translated web novel. And that was very well known for not only mistranslating, but adding literal lies and extras into their chapters that weren't in the novel at all.
They called him a praying mantis there.
And even Rimuru himself said that Zegion might be able to win if the two of them fought by the time he reached full strength. It was one hellishly overpowered bug.