Abstract. Delforge, P.- Clarification of the taxonomy and nomenclature of a Maltese orchid: Ophrys hospitalis sp. nova. After a presentation of the research about Ophrys iricolor s.l. in the Maltese Archipelago, a member of the O. iricolor species group, mentioned in Malta in 1993 as Ophrys mesaritica, is described here as Ophrys hospitalis sp. nova. Nowadays, O. mesaritica appears to be a Greek or, more probably, a Cretan endemic.Key-Words: Orchidaceae, genus Ophrys, Ophrys iricolor species group, Ophrys mesaritica, Ophrys hospitalis sp. nova. Flora of Malta.