Novel pyrrole derivatives of the formula ##STR1## wherein one of R.sub.2 and R.sub.3 is ##STR2## and the other of R.sub.2 and R.sub.3 as well as R.sub.4 and R.sub.5 are individually selected from the group consisting of hydrogen, halogen, alkyl of 1 to 18 carbon atoms, aryl of 6 to 14 carbon atoms, aralkyl of 7 to 18 carbon atoms, --CN, --CF.sub.3, --NO.sub.2, --COOAlk and Alk is alkyl of 1 to 8 carbon atoms, alkoxy of 1 to 8 carbon atoms, ##STR3## n is 0, 1 or 2, R', R.sub.1 ' and R.sub.2 ' are alkyl of 1 to 8 carbon atoms and R.sub.4 and R.sub.5 taken together with the carbon atoms to which they are attached may form an optionally further unsaturated carbon homocycle of up to 8 carbon atoms, Z is selected from the group consisting of hydrogen, --CN, --C.tbd.CH, --CF.sub.3 and alkyl of 1 to 3 carbon atoms, A is the residue of a pyrethrinoid acid, R.sub.1 is selected from the group consisting of ##STR4## X', X, Y, Y' and Y" are individually selected from the group consisting of hydrogen, halogen, alkyl of 1 to 8 carbon atoms and aryl of 6 to 14 carbon atoms, the dotted line indicating an optional double bond, r' is selected from the group consisting of hydrogen, alkyl of 1 to 18 carbon atoms, aryl of 6 to 14 carbon atoms, aralkyl of 7 to 18 carbon atoms, --CF.sub.3, --COOAlk and alkoxy of 1 to 8 carbon atoms and Alk has the above definition, R" and R'" are individually selected from the group consisting of hydrogen, alkyl of 1 to 8 carbon atoms, aryl of 6 to 14 carbon atoms, aralkyl of 6 to 18 carbon atoms, --CF.sub.3 ' --COOAlk' and alkoxy of 1 to 8 carbon atoms and Alk' is alkyl of 1 to 8 carbon atoms having pesticidal properties and novel intermediates.