A compound of formula wherein Y is chlorine, bromine, iodine, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl or C 1 -C 4 haloalkoxy; X 1 is methoxy and X 2 is hydrogen, or X 2 is cyano and X 1 is hydrogen; R is hydrogen or C 1 -C 4 alkyl; Q is a group selected from Q1, Q2, Q3, Q4 and Q5, wherein Q1 is a group of formula (IIa) wherein the substituents W1 are independently selected from hydrogen, halogen, cyano, nitro, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy or C 1 -C 4 haloalkoxy, and n1 is 0, 1 or 2; Q2 is a group of formula (IIb) wherein W 2 is selected from hydrogen, halogen, cyano, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy or C 1 -C 4 haloalkoxy; Q3 is a group of formula (IIc) wherein W 3 is selected from hydrogen, halogen, cyano, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy or C 1 -C 4 haloalkoxy; Q4 is a group of formula (IId) wherein W 4 is selected from hydrogen, halogen, cyano, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy or C 1 -C 4 haloalkoxy; and Q5 is a group of formula (IIe) wherein W 5 is selected from hydrogen, halogen, cyano, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy or C 1 -C 4 haloalkoxy, or an agrochemically acceptable salt thereof. Y is chlorine, bromine, iodine, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl or C 1 -C 4 haloalkoxy; X 1 is methoxy and X 2 is hydrogen, or X 2 is cyano and X 1 is hydrogen; R is hydrogen or C 1 -C 4 alkyl; Q is a group selected from Q1, Q2, Q3, Q4 and Q5, wherein Q1 is a group of formula (IIa) wherein the substituents W1 are independently selected from hydrogen, halogen, cyano, nitro, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy or C 1 -C 4 haloalkoxy, and n1 is 0, 1 or 2; Q2 is a group of formula (IIb) wherein W 2 is selected from hydrogen, halogen, cyano, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy or C 1 -C 4 haloalkoxy; Q3 is a group of formula (IIc) wherein W 3 is selected from hydrogen, halogen, cyano, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy or C 1 -C 4 haloalkoxy; Q4 is a group of formula (IId) wherein W 4 is selected from hydrogen, halogen, cyano, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy or C 1 -C 4 haloalkoxy; and Q5 is a group of formula (IIe) wherein W 5 is selected from hydrogen, halogen, cyano, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy or C 1 -C 4 haloalkoxy, Q1 is a group of formula (IIa) wherein the substituents W1 are independently selected from hydrogen, halogen, cyano, nitro, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy or C 1 -C 4 haloalkoxy, and n1 is 0, 1 or 2; wherein the substituents W1 are independently selected from hydrogen, halogen, cyano, nitro, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy or C 1 -C 4 haloalkoxy, and n1 is 0, 1 or 2; Q2 is a group of formula (IIb) wherein W 2 is selected from hydrogen, halogen, cyano, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy or C 1 -C 4 haloalkoxy; Q3 is a group of formula (IIc) wherein W 3 is selected from hydrogen, halogen, cyano, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy or C 1 -C 4 haloalkoxy; Q4 is a group of formula (IId) wherein W 4 is selected from hydrogen, halogen, cyano, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy or C 1 -C 4 haloalkoxy; and Q5 is a group of formula (IIe) wherein W 5 is selected from hydrogen, halogen, cyano, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy or C 1 -C 4 haloalkoxy,