Spiroheterocyclic N-oxypiperidines as pesticides

Compounds of the formula I

• wherein
• X, Y and Z independently of each other are C1-4alkyl, or halogen, phenyl or phenyl substituted by C1-4alkyl, C1-4haloalkyl, halogen or cyano;
• m and n, independently of each other, are 0, 1, or 2 and m+n is 2;
• G is hydrogen, or a latentiating group which is —C(Xb)-Xc-Rb, wherein Xb and Xc are oxygen and Rb is C1-C18alkyl;
• R is hydrogen, C1-6alkyl, C1-6haloalkyl, C1-6cyanoalkyl, benzyl, C1-4alkoxy(C1-4)alkyl, C1-4alkoxy(C1-4alkoxy(C1-4alkyl or a group selected from G;
• and
• A is C1-6alkyl;
• or an agrochemically acceptable salt.