Abstract. Delforge, P.- Contribution to the knowledge of the Ophrys blitopertha species group in Crete [Natural. belges 86 (Orchid. 18) (2005): 141-146]. Till now, the Ophrys blitopertha species group comprises only two named species, O. blitopertha and O. persephonae, which are not recorded from Crete. Observations made in Crete in April and May 2005 have indicated that the two species occur in the island, as well as a probable third taxon of the species group.

Key-Words: Orchidaceae; genus Ophrys, Ophrys blitopertha, Ophrys persephonae; flora of Greece, Crete.