A new species of <i>Protaetia</i> Burmeister, 1842 from Armenia with taxonomic notes on <i>Cetonia</i> <i>floricola</i> <i>fausti</i> Kraatz, 1891 (Coleoptera: Scarabaeidae: Cetoniinae).

The history of usage of the name Cetonia floricola fausti Kraatz, 1891 (Coleoptera: Scarabaeidae: Cetoniinae) is discussed. In recent publications, the name Protaetia (Potosia) fausti was applied to a taxon that is not conspecific with Kraatz's holotype. We therefore reassign the name Cetonia fausti Kraatz, 1891 as a junior synonym of Protaetia splendidula (Faldermann, 1835) and discuss the justification for this synonymy. The taxon that was erroneously called Protaetia fausti in recent papers actually includes two distinct species: Protaetia jelineki (Petrovitz, 1981) and a species described in this paper as Protaetia (Potosia) haiastanica new species from northwestern and central Armenia and southwestern Georgia.