Disclosed are compounds of Formula 1, N-oxides, and salts thereof, wherein (Formula 1) X is O or S Y is O or S A is O, S, NR3e or C(R3c)=C(R3d) Z is a direct bond, O, S(O)n,191, NR6, C(R7)2 O,OC(R7)2, C(=X1), C(=X1)E, EC(=X1), C(=NOR8) or C(=NN(R6)2) a is 1, 2 or 3 and R1, R2, R3a-R3e, R4, R5, R6, R7, R8, X1 and E are as defined in the disclosure. Also disclosed are compositions containing the compounds of Formula 1 and methods for controlling an invertebrate pest comprising contacting the invertebrate pest or its environment with a biologically effective amount of a compound or a composition of the invention.
