Fungicidal substituted 3-arylpyrroles

A substituted 3-arylpyrrole of the formula ##STR55## in which Ar represents pyridyl, furyl or thienyl which is in each case optionally monosubstituted or polysubstituted by identical or different substituents from the group consisting of halogen, nitro and straight-chain or branched alkyl having 1 to 4 carbon atoms, or phenyl which is optionally monosubstituted or polysubstituted by identical or different substituents from the group consisting of halogen, cyano, nitro, straight-chain or branched alkyl, alkoxy, alkylthio or alkoxycarbonyl having in each case 1 to 6 carbon atoms, in each case straight-chain or branched halogenoalkyl, halogenoalkoxy or halogenoalkylthio having in each case 1 to 4 carbon atoms and 1 to 9 identical or different halogen atoms, phenyl and, optionally fluorine-substituted oxyalkyleneoxy having 1 to 2 carbon atoms.