In Kirby: Triple Deluxe, for the last world you encounter ant-like enemies known as Antr. The species of Taranza and Sectonia's true form aren't really named, but based on that, I'm thinking of naming the species Spidr after the Antr species. Potentially suffix with _(kirby) to avoid typos of somebody missing the E on SpidEr, though history suggests this has never happened.
Edit: Looks like the People of the Sky have no species, either. I'm thinking of floralian for them, named after the flower planet upon which they live.
Updated by fewrahuxo