Lifa
A common name for the species that evolved on the planet Nathore in Alpha Centauri A, that later branched off into the Nathoreans, Searians and Gusmerians and Taoteri from planet Taoter in Alpha Centauri B. Nathorean and Taoteri descended from common ancestor, probably carried to Alpha Centauri on an interstellar object or by "cross-polination" by ejected part of either planet after a large collision.