Two natural interspecific hybrids of Ophrys mammosa Desf. s. l. and O. oestrifera M. Bieb. (O. × aghemanii Renz) are reported from Russia: a very rare O. mammosa subsp. mammosa × O. oestrifera from the Crimea (vicinity of Zelenogorye) and a relatively abundant O. mammosa subsp. caucasica (Woronow ex Grossh.) Soó × O. oestriferafrom the Krasnodar Territory (vicinity of Bolshoy Utrish). Males of Andrena carantonica Pérez are recorded as efficient pollinators of apparently both O. mammosa subsp. caucasica and O. oestrifera at the site where their hybrids occur.
