Substituted phenyl-cyclopropanecarboxylic acid esters of the formula ##STR1## in which R.sup.1 represents an alkoxy or alkylthio radical which is monosubstituted or polysubstituted by identical or different halogen substituents,R.sup.2 represents a hydrogen or halogen atom, orR.sup.1 and R.sup.2 together represent an alkylenedioxy radical which is monosubstituted or polysubstituted by identical or different halogen substituents,R.sup.3 represents a hydrogen atom, a cyano group or an alkyl, alkenyl or alkinyl radicals which is optionally monosubstituted or polysubstituted by identical or different halogen substituents,Y represents a nitrogen atom or a methinyl radical, andR.sup.4 and R.sup.5 are identical or different and represent a hydrogen or halogen atom,which possess pesticidal properties, plus novel intermediates therefor.